LS1 combustion chamber/piston question
02-10-2011, 10:57 AM
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LS1 combustion chamber/piston question I am building a new LS1 for my 98 Trans Am. I am using Trick Flow GenX 220 heads with a 64cc combustion chamber. I want the compression to be at or a little above 11:1. What type piston do I need? Dished, flat or dome? Also what type are the stock ones and what is the combustion chamber size on the stock heads? Any help or advice would be appreciated.
02-10-2011, 01:37 PM
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With the stock (flat top) pistons you will be around 10.7:1 with .052 head gasket. You need a slight dome or mill the heads to achieve the compression you want.
The stock heads are 66cc~.
The stock heads are 66cc~.
Last edited by Jon@HKE; 02-10-2011 at 01:46 PM.
