Ford 302 SS build

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Originally Posted by ShipC1970

So I have a 89 roller 302 in the garage. If I run that block with a set of 68 302 heads I could run it in GT because it would be a hybrid? And I could claim it as the merc 68 302/220 combo with the 4150?

Yes, you could use the piston that fits the 68 302 combo ( 4 valve reliefs), the 68 4V heads ( C80E-F) or the aluminum replacement head, which is the better head, and more cost effective. And as a Mercury that combo takes the Holley 600cfm 4150 carb.
The 390, 428, 351c, even 351w are good combos to research also. I dont think the 2bbl 302 is good for Super Stock, Matt Hawk has played with the 302 2bbl and the carb is just too small for the hp rating.