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Discussion Starter · #3 ·
the intake valve is almost exactly 1" across

exaust valve is about 7/8"

thats from the ridge to ridge, like what size it would need to seal.

but i dont know the exact specs.

the intake port is 7/8"

the exaust port is just shy of 7/8" too.

theres LOTS of steel that can get cut away to make a MASSIVE port job.
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