Re: LS5 long block value?
According to Colvin, the "512" block was the only Chevy block used as both a '69 427 and '70 454, since GM had already made the decision to increase the stroke for the '70. This casting was also made with both 2 bolt and four bolt mains, and used in the big Chevys and 'Vettes in '69, and Chevelles added in '70.
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COPO 9561/9737 M40 X11D80
13.37 @ 105.50 on pump gas,drove it to NATL TRAILS and back [email protected] SCR22
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