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Unit 5302 · 11-22-2005, 08:32 PM

I think that'll put you around 10.25:1 CR.

Stock combustion chambers are 64cc and the pistons are 5.5cc relief. Add in the fact you're running a 306 instead of a 302, and it puts you up there by pure estimation.

11-22-2005, 08:32 PM	#6
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Re: Let's play guess my new motor's horsepower!! I think that'll put you around 10.25:1 CR. Stock combustion chambers are 64cc and the pistons are 5.5cc relief. Add in the fact you're running a 306 instead of a 302, and it puts you up there by pure estimation.