1976 Porsche 934/5


1976 Porsche 934/5

In 1967 Porsche prepared a small number of 934 Porsches with 935 Group 5 parts for the Trans-Am and IMSA GTO series. In the end, the 934/5 dominated the Trans-Am series by taking to top five positions in the championship.

Ludwig Heimrath became the 1977 Trans-Am champion in his 934/5 by protesting Peter Gregg’s highly modified car. Together they humbled the Corvette C3s and the Group 44 Jaguar XJS. Later

Meanwhile in the IMSA-sanctioned 1977 Camel GT Challenge, Hurley Haywood placed second at the end of the season in the Bob Hagestad 934/5 as prepared by Franz Blam Racing. They were beaten by the DeKon Monza of Al Holbert.

Customers of the factory 934/5s included Jim Busby, Peter Gregg, The Interscope Team, George Dyer, Vasak Polak, Ciro Nappi, Bob Hagestad, Ludwig Heimrath, Dick Barbour and Clifford Kearns.

All the 934s were delivered, body-in-white, to several teams with the 935 wheel flares and rear wing. Only ten 934/5s were officially made by Porsche with the chassis numbers 9307700951, 9307700952, 9307700953, 9307700954, 9307700955, 9307700956, 9307700957, 9307700958, 9307700959, 9307700960.

1976 Porsche 934/5 1976 Porsche 934/5

In Detail

submitted byRichard Owen
typeRacing Car
built atStutgart, Germany
production10
engineFlat 6
positionRear, Longitudinal
aspirationKKK Turbocharger
valvetrainSOHC
fuel feedK-Jetronic Mechanical Injection
displacement2993 cc / 182.64 in³
compression10.3:1
power361.7 kw / 485 bhp @ 7000 rpm
specific output162.04 bhp per litre
torque588.4 nm / 434 ft lbs @ 5400 rpm
redline8500
body / frameUnit Steel with Some Fiberglass Panels
driven wheelsRear Engine / RWD
wheel typeBBS Center-Lock
front brakes917 Ventilated Discs
rear brakes917 Ventilated Discs
front wheelsF 40.6 x 26.7 cm / 16 x 10.5 in
rear wheelsR 40.6 x 31.8 cm / 16 x 12.5 in
steeringRack & Pinion
wheelbase2271 mm / 89.4 in
front track1402 mm / 55.2 in
rear track1422 mm / 56.0 in
length4128 mm / 162.5 in
width1651 mm / 65.0 in
height1321 mm / 52.0 in
transmission5-Speed Manual
tran clutchSingle Plate
gear ratios3.18:1, 1.83:1, 1.26:1, 0.925:1, 0.724:1
final drive4.43:1
top speed~286.5 kph / 178.0 mph
0 – 60 mph~5.6 seconds
0 – 100 mph~12.0 seconds
0 – 1/4 mile~13.2 seconds
fuel capacity120 litres or 31.68 gal.

Auction Sales History

1976 Porsche 934/5

1976 Porsche 934/5 IMSA/Trans-Am 9307700957 – sold for $550,000 The seventh of 10 factory-built single-turbo racing cars. Originally sold to Bob Hagestad Racing. Driven by IMSA Champion Hurley Haywood. Finished 2nd in 1977 IMSA GT series. Auction Source: 2013 Monterey Auction by RM Auctions
1976 Porsche 934/5

1976 Porsche 934/5 – did not sell for $550,000 From the Steve Goldin Collection. 1 of 10 factory built 934 1/2s built. Designed specifically for IMSA competition. Original owner was Bob Hagestad Racing. Driven by Hurley Haywood. Finished 2nd overall in 1977 IMSA Championship with several wins. Correct Porsche single turbo motor. – Sold on bill of sale
Auction Source: 2012 Daytime Auction by Mecum