Weight per cubic inch is the key. Most F and G/MP cars were 277, 288, or 292's. Some heavier cars were 300 or so inches. They use a de-stroked 4" bore motor. Ed Matsko's Chevy-A-Go-Go 69 camaro is probably under 300 inches. Runs SS/FM. My buddies from Phoenixville, Pa. set the G/MP record in about 1976 with a 2 door 57 Chevy wagon. Ran a 292 with a Nash 5 speed a 6.50 ring and pinion and a 50lb. flywheel. Went 11.33 at Suffolk Virginia. Cotton Perry ran a real fast and competitive H/MP 66-67 nova in the those days also.
