The Cammer, too powerful and exotic for NASCAR. The 427 FE was very special too, lighter than the Hemi, Forged Internals and thumbed it's brute under rated 425 HP at Enzo Ferrari at Lemans in the GT40. The dealership fix for your 1967-68 GT500 when the 428 cid spontaneously disassembled itself? Drop a 427 FE in it. GM , Chrysler, AMC and even Studabaker brought a lot of HP to the people, but Ford showed that America could produce something special that was world class and our engineers were better than those in europe. The 1966 GT40 was still breaking records up until 2005! I saw a Cammer in Oklahoma at a car show, it was in an orange and white '62 Ford Galaxy Starliner.