69cc chambers, 1.78/1.45 intake and exhaust valves. 1978-1980 vintage for the 302 and 351W.
You're wasting your time. Flow isn't as good as stock E7 castings, and the chambers are way to big.
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Russ L
'91 LX - 331 w/ Procharger
'03 Cobra Convertible - Pullied
'94 Lightning
'65 Mustang Coupe
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