the 1968 ZL1 engine... ever wonder why GM made less than 100? Sure is a lot of r and d, and millions of dollars of engineering and production involved in rolling out a new engine, to install 4 in production cars, and sell the rest to racers.

well, consider that GM wasn't "really" out of racing.

Then consider that 69 were put in COPO Camaros for racing, and I don't even know how many they made and sold to Can Am racers.

Yeah, I think it's obvious that GM was out to win, and Jim Hall's Chaparral's were the motivation to get them made, but, McLaren was the real beneficiary.

McLaren was putting out about 620 hp from the 460 pound engine. Nice.