Canis, The '70 #16 heads were rated at 10/1 on a 400. They, actually, would probably be slightly less, but still too high for pump gas. I personally think you would be better off with a set of '71 or later 350 heads, preferably with screw in studs.
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Bill
64 GTO, tube chassis w/606" IA tall deck, PG & a pro geared Fab 9". 2750 lbs.
[email protected]/4, [email protected]/8, 1.1981-60-ft. 8/10/08
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