Your valve sizes are the HiPo size but valves get swapped alot. You need to have somebody familiar with the spring seat area look at them. I don't have any apart for pictures but it will look like a 427 head if it is a HiPo. Hawkrod
Hawkrod
39 Ford Deluxe Coupe
59 Tbird 430
60 Lincoln Premier
(2)62 Tbirds
(3)68 Cougar XR7-G's
69 Cougar 428CJ 4 speed
77 1/2 Ford F250 4X4 w/460 swap
86 SVO mustang
76 F250 Crew Cab
1969 Mach I
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