1975 Porsche 911S Coupe IROC Tribute 3.0L Twin-Plug
Vehicle Details
- Year: 1975
- Make: Porsche
- Model: 911S
- VIN: 9115201982
- Mileage Shown: 9,943mi (TMU)
- Transmission: Manual
- Title Status: Clean
- Color: Green
- Seller Type: Private Party
- Location: Cedar Rapids, IA 52411
- Country: United States of America
- Lot #: V-0055985
This 1975 Porsche 911S Coupe has been reimagined as a tribute to the legendary 911 Carrera RSR race cars from the early International Race of Champions (IROC) series. Finished in green, it features IROC-style bodywork, flared fenders, a custom lightweight interior, 17” RSR-style wheels, and various race-focused upgrades. The flat-six engine has been enlarged to 3.0 liters, equipped with 46 PMO carburetors and twin-plug ignition, and mated to a 915 5-speed manual transmission, along with several additional mechanical enhancements. This street-legal homage was previously listed on PCARMARKET, and is now being offered auction once again by its seller out of Iowa.
The bodywork was modified between June 2009 and April 2010 with wide fenders, IROC-style bumpers, and an IROC-style rear wing. As part of the restoration, this Coupe was refinished in the current shade of green by Darrin Wood's Body Shop in Toney, Alabama, and preserved by full exterior paint protection film. It rides on 17” deep-dish Fuchs-style wheels with newer rear tires that have been driven for approximately 400 miles. Detailed images are provided in the gallery.
The black interior has been prepared for racing with a pair of leather-upholstered Recaro bucket seats, a MOMO Prototipo quick-release steering wheel, a roll cage, Rennline footrests, and a tilted tachometer gauge. Additionally, the headliner has been reupholstered, and Dynamat heat and sound insulation has been installed beneath the carpeting.
The flat-six engine has been enlarged to a 3.0-liter displacement and equipped with 46 PMO carburetors and twin-plug ignition. Power is delivered to the rear wheels through a 915 5-speed manual transmission. Additional enhancements include an RSR-spec oil cooling system, front and rear IROC race suspension, M&K 911R mufflers, new fuel lines, and a race-grade Fuel Safe fuel cell. The seller notes an oil change was completed in August 2023, and the car has been driven approximately 300 miles since.
This sale will include a clean title and some documentation.
The seller would like you to know: "I've driven the car approximately 500 miles during my ownership of just over a year. Joe's Garage in Milwaukee, Wisconsin, thoroughly inspected the vehicle and addressed everything that required attention. The car is in excellent condition and ready to drive, needing nothing."
Comments (41)
A new Driving Video has been added to the listing page.
@r32fan I have some driving videos just trying to figure out how to post them….hold tight
Bid in the amount of $25,911
@Cmohr56 Front fender flares are fiberglass
Fiberglass flairs or steel.
@r32fan We have some rain here tonight but I will try to get it out as soon as it dries up hopefully tomorrow…stay tuned!
Can you please post a PoV driving video?
Additional invoices uploaded to gallery for over $15,000 worth of improvements from July 2023. The fuel system was completely upgraded amongst other items since the video and the BAT listing.
Additional content has been added to the gallery for this listing.
@PaulEJLin
there’s been a lot of work done since the video including a complete upgraded fuel system. I added over $15,000 in invoices from July 2023 to the gallery.
@ChadEggs the YouTube video mentioned engine was dyno at 258hp. Was there additional engine works to increase up to 300hp?
Bid in the amount of $20,924
It is a 1975 ,
@sdunsworth I do see that the previous BaT listing was 75 as well. Maybe a video issue.
Regardless, beautiful car! GLWA!
Why is it called out as a 74 in the previous auction YouTube video, but listed as a ‘75?
Bid in the amount of $20,000
Bid in the amount of $12,000
@wyoland The engine in a 3.0 not a 2.7 converted. Thanks
@pwmac , thanks for sharing.
@ChadEggs Edit: 258 hp it does feel much faster and quicker than my 993 which is 285 hp.
Very cool car! I found this interesting yt video about the car when it was listed on BAT. https://www.youtube.com/watch?v=0vWb6abXx7A
@wyoland Sorry for the delay. I didn’t build the car so I don’t want to describe it wrong. There’s over 75 pages of receipts and I’m trying to dig through to find out for sure. I do believe it started as a 2.7. But I’m still trying to confirm that 100%.
@wyoland Lime green. Paint code 137.
@zollerm Around 300hp. Plenty of power for this little car!
Bid in the amount of $11,000
Also Color ? do you know what color Green it is ? is its Lizard Green, Lime Birch Green. Definitely important to me knowing the actual color
Need a little help with this ? i'm assuming its a 2.7L converted to 3.0 L thanks for the help
Horsepower? Thanks.
Bid in the amount of $10,300
Bid in the amount of $10,000
@MstBFst yes, was bid to 75k on BaT two years ago and last fall was bid to 105k on pcar. Third time is a charm
Was this car recently listed here or on another site? I know I had it saved at some point?
Sorry just saw your answer now
Is the wide bodywork steel or something else? Thanks and best
It also has a limited slip differential
@Garden38 Here’s the information I have on the engine. I don’t have any exact information on it being enlarged.
New Mahle Nickel Sil pinyons and cylinders
Carillo rods
ARP Head bolts
High Rev Valve Springs
RSR Cam
Boat tail and shuffle pin case
Aluminum flywheel and pressure plate
Euro RSR headers
Dual PMO 46mm Carbs
JB racing twin plug distributor
@The_emyrean_._ Fronts fiberglass and rears metal. The paint job and bodywork is top notch as you can see in the photos even after 15 years.
The description says that the engine was enlarged to 3.0. What did it start as?
Confirming added flares are metal?
Bid in the amount of $5,000
Additional content has been added to the gallery for this listing.