The Porsche 935
Ok, this is the badass of all the 911 derivatives. Not the 934, not even the RSR compare to this monster. The 935 is one of the most outrageous racecars of all time. By 1974-75, the Group 4 racing was no match for Porsche anymore; their RSRs-934s easily took the group, IMSA, and even raced in the SCCA's. So, the next challenge, what else but Group 5. Enter the 935.
The rules for Group 5 in 1976 stated that the car had to be based upon and must largely resemble its factory counterpart. In the 935's case, the factory 911's body shell was retained, but Porsche took full advantage of the guidelines that allowed unlimited modifications to the fenders. Bulging flares allowed the widest and largest wheels of any 911 racer, and the front fenders were redone, introducing the infamous "slant-nose" that appeared everywhere in aftermarket products. The 935's lights were relocated in the front spoiler, allowing less frontal area. On the track, the first 935's weighed 2,134lbs.
Horizontally opposed 6 cylinder, twin plug, air cooled
Bore and stroke: 92.0mm x 70.4mm
Displacement:174 cu.in. or 2857cc
Max boost pressure: 1.4bar
Horsepower: 600@7,900 rpm
Power to weight ratio: 4.2 lbs per horsepower
Compression ratio: 6.5:1
Fuel system: Bosch Mechanical
Induction: Single Turbocharger
4 speed manual
FRONT: MacPherson struts, tubular lower a-arms, progressive rate coil springs, adj. anti-roll bar.
REAR: semi-trailing arms, coil springs, adj. anti-roll bar
Unit steel with fiberglass panels
Curb weight: 2,134 lbs
Brakes and Wheels:
12.0", vented, cross drilled discs
16x11" front BBS,19x15" rear Porsche
Lateral Acceleration: 1.40g
Braking from 60mph to 0mph: 92ft.
0-60mph: 3.3 secs
0-1/4 mile: 8.9s @133.5mph
Top Speed: 185mph (Depends on gearing; upwards of 220mph is possible)
The air cooled engine of the 935 was obviously production based, but was indeed modified to produce excessively more horsepower. It's displacement was 2,857cc's, plus the 1.4 factor added in for the turbocharger, bringing the total to right at 4,000cc, the limit. It had twin plug ignition, like the 911's do. The 935 produced about 600 horses at speed.
This wasn't even the king, however, because in 2 years later, the factory built the 935/78. If you thought the original 935's fenders were wild, the 935/78's were simply outrageous. Employing a more aerodynamic nose and a rear fender line not-so-strangely reminiscent of the 908 Langheck, the '78 was bigger and badder in every sense of the words. The nickname "Moby Dick" was given to this car, for obvious reasons, including it's huge rear spoiler!
Porsche gave the monster a serious injection of power, too. Water cooled heads now contained double overhead camshafts with 4 valves/cylinder, and the engine spouted a second turbocharger. Horsepower, with full boost, easily pushed 900. With the aforementioned cars, Porsche set racing records yet untouched. The 935's won the Daytona 24hour race EVERY year from 1978-1983. They won at Sebring from 1978-'82, and '84. They won EVERY RACE on the IMSA tour in 1980, and still hold the record for most consecutive IMSA victories (18).
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