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Ol' Ron · 12-01-2019, 08:20 PM

By using a home made doming tool I put a set od 3 3/4 stroke pistons on a 4" crank. I only had to "Bore the heads" about .070" for th proper cyl tp piston clearance. Brought the CR over 9:1 and still have a good transfer area. Ya gota experiment with these little engines, that's the fun of it.

12-01-2019, 08:20 PM	#28
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,860	Re: Early V8 Dyno Work By using a home made doming tool I put a set od 3 3/4 stroke pistons on a 4" crank. I only had to "Bore the heads" about .070" for th proper cyl tp piston clearance. Brought the CR over 9:1 and still have a good transfer area. Ya gota experiment with these little engines, that's the fun of it.