Sunday, February 1, 2026

The Giant's Last Tiny Car - Fiat Abarth 1300/124 Scorpione

The October ’68 Paris Motor Show is probably best remembered for its hosting of the Bertone Alfa Romeo Carabo styling concept car’s debut.  All these years on, it is a design that still seems futuristic and is an example of Marcello Gandini’s best work.  Though its lines were comparatively restrained and it housed a far more mundane engine than the Carabo’s Alfa Romeo 33-based V8, there was another wedge-shaped car making its first public appearance that year at the show’s Parc des Expositions, Porte de Versailles venue.  The Fiat Abarth 1300/124 had been in preparation since May ’68 at Corso Marche.  That was only very shortly after the car on which it was based had itself been launched in March ‘68.  This was the Francis Lombardi Grand Prix 850, itself an evolution of a vehicle that had been created at Fiat to explore the idea of utilising an Autobianchi driveline in a sporting coupe.  Although some accounts assert that the body was styled by Giuseppe Rinaldi, (working at Francis Lombardi), it was more likely finalised at Fiat well before any knowledge of its existence had reached the Vercelli-based Carrozzeria.  That being the case, it was very probably from the drawing board of Pio Manzù, then in his twenties and about to become a rising star at Fiat.  Although a photograph of that car – which was shown at the Turin Show in ’67 – has not come to light, a Manzù design from ’64 shows some aspects which can be discerned in the Lombardi Grand Prix, especially the somewhat disproportionate C pillar/rear quarter panel – see below:

’64 Autonova GT by Pio Manzù  Courtesy Carrozzieri-italiani.com

Through the Fifties, the Lombardi business had specialised in custom conversion work, at first in limousine styles, on, by way of the first Popemobile (!), and further still in the Sixties to the upgrading of small cars such as the Fiat 500.  Indeed, the Grand Prix was built on a Fiat 850 chassis and powered by the 843 cc Fiat 4 cylinder engine.  While this was hardly in tune with the Grand Prix’s name and sleek body, since it produced only around 45 bhp, the car’s weight at under 700 Kg allowed performance at a level considered ‘sporting’ in the late Sixties.  But not sporting enough by Carlo Abarth’s standards, so he saw another opportunity to make a significantly more zestful version through the company’s proven elaborazione method focused on engine capacity and gas flow modifications.  Thus, the Tipo 104 1300/124 Scorpione was created as a distinct Fiat Abarth model.  Its main distinguishing feature was the Fiat 124 engine, bored to 1280 cc.  It was given a higher (10.5:1) compression ratio, equipped with a Solex 32 mm carburettor and designated Abarth Tipo 204.  This provided 75 bhp – a healthy 66% increase on the Grand Prix’s output.  With this increased performance potential in mind, Abarth prudently revised the mechanical configuration by relocating the coolant radiator to the front end of the car.  The Scorpione’s factory-claimed metrics were  0-60 mph in 9.8 secs and a 114 mph top speed.  With pricing at around Lit. 1.600.000, the Scorpione promised strong sales appeal based on its style – notable especially for its GT40-like ultra-low height, at 43“ - and brisk performance.  It is tempting nevertheless to speculate as to whether it could have been even quicker if it had been lighter still - given the era and the general shape of the body, it might be supposed that it was constructed in alloy or fibreglass, but it is in fact all steel, with the exception of the composite rear panel.

’68 Fiat Abarth Scorpione #1341901192  Courtesy Bonhams

The interior is attractive, with a distinctive feature in the unusual, centre mounted instruments pod.  There has been some criticism of this from an ergonomic viewpoint by drivers who expect to see the main instruments - especially the rev counter – in clear view in the centre of a natural line of sight, straight ahead.  Seen below is the interior of OTAS 820 CC, #0035:

’71 OTAS 820 CC OTAS #0035  Courtesy RobM, Bring a Trailer

For a car that was in production for just 4 years, there was quite a proliferation of variants and – looking at what has been written about it – a good deal of confusion about specifications.  However, despite some claims that Abarth made and marketed some versions powered by the ’68 Fiat 903 cc Sport version of the 850 engine, the Corso Marche-made models are generally considered to be just the Scorpione, S and SS.  Otherwise, the following related, same-body models were:

Francis Lombardi Grand Prix –  launched in March ’68 and subsequently updated with the 850 Special engine and also with a black louvred engine deck lid. In production until ’72.

OTAS 820/Giannini Grand Prix – The Officina Trasformazioni Automobili Sportive company was formed in ’69 by Lombardi in collaboration with the tuning business, Giannini.  It made 817 cc OTAS 820 versions for Europe and, with emissions modifications for the U.S., designated OTAS 820 CC, and a twin cam 982 cc ‘Tigre’ engine model for the U.S.

It is possible – but not proven – that in total up to 400 Scorpione/Grand Prix/OTAS/Giannini cars were produced.

Seen below is a ‘68 Francis Lombardi Grand Prix model version to which aftersales Abarth badging has been applied.  The Campagnolo alloy rims were also likely aftermarket-fitted in period.  It was offered for sale in 2015 by Bonhams, fetching £13,800:

’68 Francis Lombardi Grand Prix #14170049  Courtesy Bonhams

For comparison, this ’70-built Grand Prix appears to wear badging for the Francis Lombardi marque, without any attempts to ‘Abarthise!’:  It carries a Fiat roundel on the front trunk lid, ‘FL’ badges near the trailing edge of the front wheel arches and a ‘Fiat 850’ chrome script on the left hand side of the rear panel; there is also a Francis Lombardi script on the right hand side of the dashboard.  The car was sold by Iconic Auctioneers at Silverstone in 2023 for £16,313.

’70 Francis Lombardi Grand Prix #15975006  Courtesy Iconic Auctioneers

A ’68 Abarth Scorpione S is illustrated next.  Chassis #1236614103, carries the standard badging with just an Abarth crest on the front trunk lid in the centre, near its leading edge, and a chrome script ‘ABARTH 1300’ on the right hand side of the rear panel.  The VIN plate is engraved: Tipo 1300/124; No Telaio 1233614103; No  Motore 0659475.  In the auction lot description, Bonhams claimed: ‘This Scorpione S is believed to be one of just 4 examples in the USA of the approximately 30 produced.’  It sold at Scottsdale in January 2025 for $47,040.

’68 Fiat Abarth Scorpione #1236614103  Courtesy Bonhams

An example of the OTAS version is this ’68 ‘Grand Prix 820 CC,’ batch #0033.  The seller suggests this car is number 33 of a run of 120 built and so, ‘early,’ though the date attribution must be in doubt as the OTAS company was not formed until ’69.  Also, the car’s engine deck lid is of the later, 2nd series, louvred type.  It would be reasonable to suppose that it was in fact a ’69 or ’70 build.  Engine is the 903 cc version.  This is another Grand Prix which has had Abarth badges applied post-production.  But, most significantly bodywork-wise, notice that the front trunk deck incorporates a central, longitudinal raised section – this feature is also seen on the later OTAS Grand Prix seen further below.  Notice also the insubstantial tubular bumpers – the rear item seen here is also evident on the other OTAS Grand Prix further below.

’69-’70 OTAS Grand Prix 820 OTAS #0033  Courtesy CarandClassic

Although it’s never wise to bank on chassis/batch numbers being reflective of build chronology – especially with Italian cars of the era – another reason for questioning the date attribution of batch #0033 is that the next OTAS Grand Prix, dated to ’71, has a much lower batch number - #0007.  It’s a car that sold for $26,880 in 2019 by Bonhams at Quail Lodge.

71 OTAS Grand Prix 820 CC OTAS #0007  Courtesy Bonhams

From the same year, #1447434, batch #0014, the OTAS 820 CC Grand Prix seen below started life in red, but is today repainted in Verde Miura – a nod perhaps to the notion that the Grand Prix has the look of a ‘mini’ version of Lamborghini’s first great supercar.  Bonhams sold it 2010 in New York for $28,080.  The OTAS 82 CC script badge is applied on the rear panel to the left of the right hand side tail light unit.

‘71 OTAS Grand Prix 820 CC #1447434  Courtesy Bonhams

The Abarth Scorpione SS was introduced in February ’69, (that is the date recorded by the Factory – other sources have suggested that the SS appeared before the S, the latter replacing the SS).  The SS version featured twin Webers and was a few Kg lighter, benefitted from upgraded brakes, wider track, double wishbone front suspension and had Campagnolo Elektron (magnesium-alloy) wheels with 165 section tyres (155 on the S).  Top speed was claimed to be 118 mph.  (There is something of a mystery about the SS in that the factory’s data sheet records the model as equipped with the single Solex C 32 PHH carburettor and the same bhp value – 75 – as quoted for the S model).  On the twin Webers, the car’s Tipo 204 engine has been rated elsewhere at 100 bhp.  Bonhams says that only six SS Scorpiones were built, one of which is #128/292067, seen below.

’70 Fiat Abarth Scorpione SS #292067  Courtesy Bonhams

In late ’68 when the Scorpione was launched, with the given success of the established models in Touring/Sport competition – 595, 695, 850 TC, 1000 Berlina, 1000 SP, OT 1300 – a factory racing programme was not envisaged for the model.  Inevitably though, some owners saw potential competitiveness in minor events, and, seen below, is an example which was hillclimbed in-period.  # 1411387261 was offered in ’15 with an estimate of £45-50,000 (but not sold) by RM Sotheby’s.  The lot description notes that the original owner sold it to Italian racing engineer, Francesco Landi, a hillclimb competitor.  Landi fitted twin Weber 40DCOE carburettors and re-configured the front suspension from transverse leaf spring to his own coil-over-shock design.  He took 2nd place at the Coppa dello Collino on his first outing with it.  Recent colour photographs of the car are shown below together with some in black & white, competing in-period:

’69 Fiat Abarth Scorpione S #1411387261  Courtesy Tom Wood/RM Sotheby’s

’69 Fiat Abarth Scorpione S #1411387261  Courtesy RM Sotheby’s

It is often cited that the Scorpione was the last Abarth model developed and launched prior to the company’s absorption into Fiat.  Carlo Abarth’s sale of his business was formalised in mid-October ’71.  An early decision taken by the new management at Corso Marche was the cancellation of the Scorpione and all production was completed before the close of that year.  Parallel with his role in creating the Scorpione, Carlo maintained an interest in the establishment of the Grand Prix as a mainstream car available in the U.S. market.  To this end, he co-operated  both with John Rich and the OTAS company.  Rich’s Rich Motor Company was the leading dealer for Fiat and Abarth on the West Coast but John was ambitious and resourceful in seeking to further expand his business.  Empathetic with this, Carlo helped with the fabrication of a U.S.-specific engine for the Grand Prix.  This was necessary because of new legislation that sought to address the increasingly recognised problem of environmental pollution.  The Clean Air Act of ’70 had led to the establishment of an Environmental Protection Agency.  This rapidly became home to a team of zealot officers who perceived the automotive industry in very negative terms, especially because of the contribution to ‘smog’ from vehicle exhaust emissions.  Further, there was likely a notably socialist basis to the political leanings of the Agency’s personnel, strengthening their desire to take such huge corporations as America’s Big Three – Ford, GM and Chrysler - to task.  A major imposition introduced was the requirement for the engines of all cars marketed in the U.S. to be compliant – proven by stringent testing and mandatory certification – with new exhaust emission standards aimed at levels of hydrocarbons, carbon monoxide and nitrogen oxide outputs being reduced by 10% around the mid-decade point.  There was however a glimmer of relief for smaller makers who would be unable to fund all the development and testing involved – engines with a capacity of less than 50 cubic inches were exempt.  Thus, the existing U.S. version of the Fiat 850 engine was derated to 817 cc.

If the EPA could frustrate the mighty power that was Ford Motor Company – charged with failing to certificate the compliance of production output prior to offer for sale – it would have no difficulty with applying scrutiny and demanding proof of justification for exemption from a minnow like OTAS – a significant distraction as the company attempted to market the car and build a dealer network.  Consequently OTAS struggled to establish a volume of sales sufficient to consolidate the company’s viability.  And the situation was not helped by the spread of stories about the Grand Prix being prone to engine failure because of a marginal cooling system causing overheating problems in the hotter states – a similar experience being reported about cars exported to Australia.

As a result of these issues, the company folded in ’71, so, as with the Scorpione version, the OTAS 820 was out of production by ’72.  Some sources have suggested that as many as 100 cars (one specific assertion is of 76 units) may have been imported/sold, but the actual number is not verifiable from available documentation.






Wednesday, January 14, 2026

Apologies!

Ever since I started posting to this blog in April '21, I have been disappointed to find that my texts as seen and composed in the blogger.com interface without any anomalies often had sections with unintended formatting faults and font inconsistencies once published.  I have sought help on this and tried several suggested fixes, but all without success.  So I'm now happy to have discovered what I believe to be a solution yesterday.  I will be going back through previous posts over the coming weeks and applying the fix.  I'm hopeful this will improve the quality of the reading experience for Do Look Back visitors.

Meanwhile, just a gratuitous Abarth image, of the model - Fiat Abarth 750 GT Record Monza Zagato - I'm writing up just now for a post in the next few months:

Courtesy ClassicDriver.com


Update! (22nd January 2026)

I have to say 'sorry' once again.  I don't have the solution I thought I had.  I've applied changes/unformatting to a few of my posts only to find that they still include the font/spacing format issues mentioned above.  I'm sorry that my texts continue to look odd  in places, but I'd hope that the narrative itself remains readable and of interest.  It would seem that the blogger.com editor functionality has anomalies which cause the published/displayed text intermittently to be non-conforming with what is input. That being the case, I'm going to look into the possibility of migrating Do Look Back to an alternative 'platform.'

Regards,

David


Saturday, January 3, 2026

Championing Equality, 70s Style

The ‘70s began for Porsche as troubled times.  No more so than in the United States, where the first two years of the decade were characterised in broad economic terms by recession and by price-based consumer resistance as far as the Porsche marque was concerned.  Not only was this very undermining of the company’s American retail operations, but it also forced a scaling back of production in Zuffenhausen.  The unsettling effects were compounded by change and uncertainty brought about by renewal of the company’s management, a process to do as much with the emergence of younger members of the Porsche and Piëch families keen to make their mark, as with the confrontation with harder times and reduced profitability.  Perhaps unexpectedly, the situation was resolved by a deliberate programme of divestment of key roles such that a much more diverse range of skills, expertise and knowledge came to exist in the Porsche management team.  Especially notable was a re-appointment of Ernst Fuhrmann as head of Porsche’s technical functions.  Backed up by Helmuth Bott taking care of engineering development, Fuhrmann was in a position to assert the supremacy of key product values centred on engineering excellence, quality/durability and class-leading performance.  Meanwhile, a wide-ranging cultural/commercial outlook was established through Butzi Porsche’s creation of the Porsche Design company.  By the end of ’72, all the change was enough to warrant redefinition of the company as an Aktiengesellscaft, ‘public’ enterprise.

As for the products, there was for some time a stalling of development of the 911 model while attention was diverted to study of proposals for a larger, four seat Porsche.  Also diluting attention to the core-product, was work on a new transaxle and studies challenging the basic configuration of the engine/transmission within the chassis.  Meanwhile, complying with the basic design of the 911, it’s competition model, designated 911S, began the new decade with increasing engine capacities - taking them from the initial 2.0 to 2.2 litres, and then to 2.4 litres.  Performance was further enhanced by programmes of chassis/body lightening and homologation of the components involved.  In ’70 the company signalled its interest in promoting the marque’s competition profile, introducing The Porsche Cup.  For ’72, an American buyer could be tempted by a new 2341 cc 911S with 190 bhp and 154 lb-ft torque, (both DIN).  But this was a prelude as confidence returned – both within Porsche and to the wider economy – to the much more vigorous 911s which were under development, the model type having regained its due focus.

The Porsche Cup was something of special interest to one particular American – Roger Penske.  Ohio-born Penske had shown entrepreneurial talent alongside a competitive spirit since an early age, initially buying and selling cars while also racing them.  As the Sixties progressed, so too did Penske’s business career, adding interests in transportation and associated industries,  while his racing expertise also developed to the extent that he achieved professional driver status.  Though he hung up his helmet mid-decade in order to concentrate on corporate auto retailing, he maintained an interest in motorsport, forming and running ‘Penske Racing.’  The team was soon operating very competitively, marking its mark in the Can-Am in ’66, stepping up to the Indycar series in ’68 and tackling Trans-Am the following year.  At this time, much as Penske himself was propelling the team forward, his lead driver, Mark Donohue, was hugely instrumental in its successes by virtue of his at-the-wheel expertise, backed by a significant understanding of the cars’ technical aspects and an exceptional facility with the engineering involved.  Donohue was highly capable with a wide range of types of car, but he was always especially happy to take to the track in a Porsche.  Thus, when Penske began to talk to him about the idea of an International Race of Champions (IROC), Donohue was quick to suggest that the best car for the series would be a Porsche 911, such was the performance and durability of the model.  Donohue didn’t have to push too hard because Penske had become a real Porsche aficionado, racing one in SCCA events in the late Fifties, supported by Porsche factory-trained Austrian, Karl Kainhofer.  Kainhofer was employed when Penske Racing was established and stayed there for a remarkable 30 years, mainly functioning as the team’s engine guru.

Roger Penske in a Porsche 718 RS, 1960  Courtesy Mark Dill

Roger Penske, left, with Mark Donohue

By early ’73 Porsche had homologated 500 911 Carrera RS Group 4 cars.  At the Daytona circuit in February ’73 the 24 Hours race was hard fought between the Carrera RSRs of the Brumos and the Penske teams.  Given the capabilities of the prototype cars expected to take overall victory, the fact that the RSRs battled for the lead was in itself quite remarkable.  Nevertheless, the Brumos car, driven by Peter Gregg and Hurley Haywood won by no less than 15 laps.  The Penske car did not finish, a piston failure to blame.  However, it was Penske who within the year would be the instigator for one of the most distinctive Porsche racing models of all time – the IROC 3.0 911 Carrera RSR.

Brumos 911 heads Penske’s, Daytona, ‘73  Courtesy Lou Galanos

The concept of a motorsport Race of Champions was initiated by David Lockton.  Lockton had in the mid-Sixties extended his career in TV production by establishing the sport/media agency, Sports Headliners.  Where others had failed, Lockton succeeded in creating a brand new motorsport venue in California – the Ontario Motor Speedway, inaugurated in August ’70.  There was initial success, including the staging of a non-championship F1 race (the Questor Grand Prix) ) at the venue.  However, a great deal of debt was also incurred and the following year Lockton walked away from the enterprise. 

During his involvement at the Ontario Motor Speedway, Lockton’s colleagues had included Les Richter, a well-known NFL player, who, after his football career, became involved in motorsport governance, along with Roger Penske.  Richter and Penske were encouraged by a TV producer, Mike Phelps, to develop Lockton’s Race of Champions idea.  A management board was set up with Richter acting as its chairman while Penske spearheaded activities to convert the concept into a reality.  Having determined that the competition should involve twelve top-line drivers, a format of three qualifying races/heats and a ‘final’ was devised.  The drivers invited to compete were, from the U.S. Bobby Unser, A J Foyt, Richard Petty, Mark Donohue, George Follmer, Roger McCluskey, David Pearson, Gordon Johncock, Peter Revson and Bobby Allison.  The field was completed by New Zealand’s Denis Hulme and the Brazilian, Emerson Fittipaldi.

The 12 Champions  Courtesy Douglas Dempsey

Given the high quality of the driving contingent, a substantial prize fund of $175,000 was established.  Somewhat unusually, it was determined that the driver taking the largest share of the fund would be declared series champion whether or not they were the winner of the Daytona final. 

With so much going on over a range of car types/race series, Penske recognised the need for the IROC to be managed with proper focus.  To this end he hired Jay Signore to manage the activity as a carefully defined project.  Valued for his technical expertise by Donohue since ’59 when they were racing Elvas, Signore also had good organisational ability – as too did his wife, who was also drafted in to strengthen Penske Racing’s management team.  Signore enlisted Al Holbert to relieve Donohue of some of the initial testing of two Zuffenhausen-supplied evaluation 911s in order to confirm the sort of detail specification/upgrades required, in consultation with Don Cox, acting as Chief Engineer.  As an outcome, the Penske Racing’s call was for an evolution of the milestone ’73 Carrera, embodying a version which was as much an exercise in body lightening as it was in terms of increased engine power.  With all ‘unnecessary’ interior trim/equipment removed, fibreglass engine deck lid, front trunk panel, front bumper/air dam, rear bumper/spoiler, extra-width rear wheel arches and Perspex side windows, a kerb weight of around 900 Kg was achieved, whereas the fifty to sixty units made for road car sales were some 30-60 Kg heavier, and a ‘standard’ 2.7 Carrera weighed in at 1075 Kg.  Such a 2.7 911 was a quick car at that weight and with an engine generating 210 bhp.  Its performance was however eclipsed by the RSR’s 330 bhp, (and a peak torque measure of 232 ft lbs).  Running with a compression ratio of 10.5:1, the 2996 cc engine was fuel-injected with a Bosch mechanical pump system featuring high positioned butterfly throttle bodies.  There were two spark plugs per cylinder.

RSR engine (6840026) in chassis #4600124  Courtesy Ottis & Co LLC

There were several complementary chassis upgrades too, including spinner-secured wheels and brake discs/calipers as specified for the 917.  Though not officially confirmed, the price paid per car by Penske was around $25,000.  By comparison, at that time the retail price of a 2.7 Carrera was just a little under $13,000.  The deal was for 15 cars – 12 for each race and 3 more for practice, (and as spares/hacks).  The race cars were not run in practice in order to avoid any suffering any wear/damage deleterious to their performance and therefore disadvantaging an individual driver.  In response, Porsche built the cars as listed below:

Chassis #

Engine #

Colour

911 4600016

6840021

Yellow

911 4600025

6840022

Grand Prix White

911 4600035

6840024

Gulf Blue

911 4600037

6840027

Green

911 4600040

6840023

Light Green

911 4600042

6840025

Orange

911 4600050

6840028

Aubergine

911 4600059

6840029

Acid Blue

911 4600075

6840033

Mexican Blue

911 4600085

6840035

Red

911 4600090

6840031

Orange

911 4600100

6840034

Yellow

911 4600111

6840033

Strawberry Pink

911 4600116

6840032

Carmen Red

911 4600124

6840026

Black


12 of the RSRs at Werke 1, Zuffenhausen, prior to shipping

The cars were race-prepared at Penske’s workshop, which was originally to be found in Newtown Square, PA.  However, it was relocated during the course of ‘73 to Reading, North West of Pennsylvania, where, in an opportunist move typical of Roger, devastation caused the previous year by a hurricane had enabled him to acquire land at a discounted price.  (In 2006 a rainstorm precipitated the demise of the site, bringing forward a further relocation, this time to the teams’ Endurance/NASCAR base at Mooresville, North Carolina). 

The allocation of cars to drivers was made ‘draw from a hat’ style.  While every effort was made in the Penske workshop to ensure that all the cars would have as near-as-possible identical performance, equal opportunity for all the drivers was further sought by the adoption of a rotation scheme , as follows: heat 1 winning driver to be allocated for heat 2 the car finished 12th in heat 1; heat 1 driver finishing 2nd to be allocated for heat 2 the car finished 11th in heat 1, and so on.  Both heat 2 and 3 were started with a reverse grid formation.  Despite the care taken to equalise the drivers’ chances, once they were hands-on with the cars and able to talk together, resentments began to be expressed by some in regard to Donohue.  As per the title of his autobiography, (ghosted by Paul Van Vulkenburgh), The Unfair Advantage, there was a view that he had a more complete knowledge/understanding of the RSR car as a result of his involvement alongside Penske from the earliest days of the project.  Indeed, he has been quoted as saying of the RSR at the time, ‘Without a doubt the very best off the shelf production race car available at any price.’  On the other hand, several of his competitors found the car difficult to master.  Bobby Unser was reported as having said that none of the others found the RSR enjoyable to drive and suiting their own particular driving style. 

With Richter the president of Riverside International Raceway, (east of Los Angeles), it was planned, unsurprisingly, to run the three qualifying events, each over 30 laps, at that circuit, with the final to be held at Daytona International Speedway (Florida).

Riverside IROC poster

The first and second heats were scheduled for 27th October.  Fittipaldi qualified fastest, with Follmer second, but both were penalised for not attending a briefing on time, leaving Donohue as the pole-sitter.  He made good use of that, leading the race from start to finish.  The top six were: Donohue, Unser, Revson, Follmer, Hulme Foyt.  Pearson, Johncock, Allison and Fittipaldi all failed to finish or did not complete the race distance.

Donohue leads the field in the first heat, Riverside

Follmer took a notable victory in the second heat, driving through the field from a 9th place start to the lead, followed home by Pearson and Fittipaldi, (who had started on pole).

Revson at speed in the second heat, Riverside

Although he had retired from the second race with a throttle problem, Donohue was once again victorious in the third heat run on the 28th.  As in the first heat, Donohue started on pole and maintained his lead for all of the race’s duration.  Completing the top six were, Unser, Fittipaldi, Pearson, Follmer and Foyt.  Both Petty and Johncock failed to finish because of throttle linkage problems, the same issue which affected Donohue in heat two.  Otherwise, over the three heats, retirements were mainly the result of accidents and there was just one engine failure – for Allison in the third heat.

Fittipaldi, running third in heat 3, Riverside
 
The cars went back to Pennsylvania where seven were given a pre-sale service and offered for purchase, the asking price being $21,500 each.  The remainder were subject to detailed assessment/re-preparation while the drivetrains went to Weissach for repairs/overhaul.  All the engines were run on the dyno, average peak power being reported as 316 bhp.  They were returned to the U.S. in January ’74.  The priority then became testing on the Daytona circuit with its characteristics being quite unlike those of Riverside.  Although Donohue got involved with the testing, most of it was carried out by Peter Gregg and Al Holbert.  The main conclusions reached were that uprated shock absorbers were required and rear spoiler extensions desirable, given the aerodynamic/speed potential aspects of the Daytona circuit.

Daytona IROC poster


The six drivers qualifying to run in the 25 laps final at Daytona, 14th February ’74, were, by virtue of their results in the three Riverside heats, Follmer, Unser, Donohue , Revson, Pearson, and Foyt.  Practice and qualifying took place on the 11th, resulting in the grid order, Donohue, Revson, Pearson, Follmer, Unser and Foyt.
 
Follmer had impressed in the heats and was in confident mood in Florida.  This was confirmed by his start, which was assertive and served to enable him to pass the three cars which had qualified faster, and he led for the first two laps.  Less fortunate in a hectic opening to the race were Foyt and Pearson who suffered engine failure and gearbox trouble respectively.  But Donohue had meanwhile built momentum and got past Follmer.  They then ran in close company while pulling out a growing gap to Revson and Unser in third and fourth, with Pearson struggling further back with his hobbled transmission.  But Follmer eventually lost ground and at half distance experienced a dropped valve after fluffing a gear shift.  His retirement left Donohue with an uncomplicated path to victory, with Revson finishing 2nd, Unser 3rd and Pearson 4th.

The table below shows the standings for the series on completion:

Position

Driver

1

Mark Donohue

2

Peter Revson

3

Bobby Unser

4

David Pearson

5

George Follmer

6

A.J. Foyt

7

Emmerson Fittipaldi

8

Denny Hulme

9

Bobby Allison

10

Richard Petty

11

Gordon Johncock

12

Roger McCluskey


The top three’s winnings were, Donohue: $54,000; Revson: $21,200; Unser: $19,100.  The outcome was especially satisfying for Donohue as he had decided that – whatever the result – this would be the very last event in which he would compete as a professional driver.  Particularly in that era, to retire at their peak was one of the things drivers found hardest to do.  Donohue, however, had the prospect of ongoing involvement in the sport at the elite level with the Penske organisation.  Equally, because of his engineering ability and Penske’s confidence in that, there was no danger of his being at a loose end, struggling to find something to occupy his time.  That was assured by Penske’s decision to appoint Donohue as Team Penske’s Racing Director.  But as Donohue thought he was himself stepping backward in ’74, Penske’s Team Manager, Heinz Hofer, was looking to move markedly forwards.  He had successfully pitched a plan to Penske to launch a Formula One programme and by September ’74 the team’s PC1 car was ready for its race debut at the Canadian Grand Prix.  And at the wheel? . . . Mark Donohue.  The lure of the ultimate motorsport category had been too great for Donohue to resist.  Until the following July, he raced the PC1 in 10 more Grands Prix, with a best finish of 5th in Sweden.  But, as from the British Grand Prix, a switch was made to a March 751.  With this, Donohue scored another 5th place at Silverstone, followed by a DNF at the Nurburgring.  The next event was in mid-August, at the Österreichring.  During the warm-up on race morning, one of the 751’s front tyres blew out as Donohue went into the right hand bend following the main straight.  The car left the circuit and crashed heavily, Donohue sustaining a head injury, while marshals and bystanders also were hurt, (one fatally), by the car and debris.  Despite every effort by the doctors at the Graz hospital, a clot on Donohue’s brain caused his death on the 19th August.

Mark Donohue with the IROC trophy

Of the 15 cars ordered by Penske for the IROC, at least six have been offered for sale in relatively recent times.  Mostly these are vehicles which have been expertly maintained and generally well cared for.  With their rarity, performance capability and historic provenance, it is not surprising that in the contemporary market, these are $2,000,000 motor cars.  For example, #4600100 was offered by RM Sotheby’s in 2021 with an estimate of $1,800,000 - $2,100,000.  This is the car in which Fittipaldi was the fastest qualifier in the first Riverside heat.  It became especially well-known as it was for a time owned by Pablo Escobar, notorious Columbian drug trade criminal.  Also, its bodywork was quite radically modified.  It was however, restored and returned to original specification in 2010.  A full description and excellent suite of photographs can be found here.

#4600100  Courtesy RM Sotheby’s 

Also recently well documented is #4600124.  The photographs of this RSR posted on https://www.otsandco.com/project/1974-porsche-911-rsr-iroc are especially valuable for anyone looking for detail views in order to understand/verify the specification.  All parts of the vehicle, both the exterior and the interior, can be seen with excellent clarity.

#4600124  Courtesy Ottis & Co LLC

This was the last of the batch in chassis number terms.  It was finished in black, given race number 4 and allocated to George Follmer for the second Riverside race.  Subsequently, as #12, it was driven in the third race by Donohue.  It was the winning car in both these events, but did not run at Daytona.  Al Holbert bought it and raced it with some success in ’74, but rolled it late in the year, resulting in it being out of commission until 2008, when it was restored and returned to race-ready condition.

Seen below are all 15 of the IROC 3.0 RSRs:

The ‘73/’74 IROC was considered a success and a repeat series was formulated for ’75.  However, largely driven by the cost of the 911 RSRs and their maintenance, the ’75 series was run with Chevrolet Camaros.  The event was then repeated annually through to 2006, with a short break in the early Eighties.