Camshaft to Small???

From an old 2005 post..."There is no high compression factory 400's. Actually according to NHRA Stock blueprint specs, the newer the 400, the higher CR allowed. Reality is often something else; the deck heights and the chamber sizes are nowhere near the blueprint specs, and the true CR may be in the 7's..." They made the 400 to keep the power of a 383 with all the smog crap on it, and still didnt really get that right. 400 can be the base of a very good running motor if you wanna stroke it and with the cheap 451 stroker parts nowadays, its almost the same price.