Ok to use on small bore blocks such as 265 &283. If used on large bore (327-350) comp. will be to high. Also no acc. bolt holes in heads for late model stuff.
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56 Chevy Bel-Air 2dr. HT (purchased new)
71 Chevy Cheyenne SWB PU (502HO)
65 GMC short bed step--work in progress and my gofer
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