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blake-b · 02-04-2015, 01:32 AM

Just because the cylinder head combustion chamber diameter is (or may be) 4.090 that doesn't mean the cylinder itself it. You need the block cylinder bore to determine cubic inches. If your cylinder bore is truly 4.090, your crank's stroke would have to be in the area of 3.835 to have 403 cubic inches. That is an odd stroke LS crank if it really is that stroke.

If you know, what:
block was used?
what stroke crank?
what heads?

02-04-2015, 01:32 AM	#3
blake-b Drives: 2009 ZR1 Join Date: May 2010 Location: KCMO Posts: 3,205	Just because the cylinder head combustion chamber diameter is (or may be) 4.090 that doesn't mean the cylinder itself it. You need the block cylinder bore to determine cubic inches. If your cylinder bore is truly 4.090, your crank's stroke would have to be in the area of 3.835 to have 403 cubic inches. That is an odd stroke LS crank if it really is that stroke. If you know, what: block was used? what stroke crank? what heads? Last edited by blake-b; 02-04-2015 at 01:54 AM.