Quote:
Originally Posted by 70cst
WOW...I am watching "Whats My Car Worth" ... and they said that up until 1969 GM put out an edict which said no intermediate car could be bigger than a 400. Then in 1970 this edict as lifted. Interesting. 
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That is correct, well, mostly. From the factory, all A-bodies were limited to 400ci, but outside sources weren't limited to how big of engines they installed. Hurst installed 455s in Cutlasses in '68 and '69, Yenko put 427s in Chevelles (or COPO'd them that way), and Royal was dropping 428s in GTOs. Then in 1970, the edict was lifted, and the rest is history... SS 454, GS 455, 442, and GTO all used the new CI freedom to create some of the greatest cars of the musclecar era!
