Not Ranked
Although it looks like J602,I'm sure it's sure the casting and those should be J302 heads, not bad heads at all.....
Valves are most likely 1.94 intake and 1.5 exhaust.....unless the builder put in larger valves,then they would most likely be 2.02 intake and 1.6 exhaust...
If your happy with the engine and it revs to 7000 rpms, leave everything alone and enjoy it.......
David
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DAVID GAGNARD
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