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7.4 /454 Gen VI identification

Maarten said:
I learn from every message on this forum!

Depending on the piston you may be able to mill some of the dome off to lower compression if you like.

Maarten said:
I will post the numbers on the piston after I have been near the engine.

Pistons are 14097021

Staff member

GM pistons used in the old 454 Mag and some crate motors. However being in a Gen VI block means it was someone's clone

I believe an 18.3cc dome

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