Ported runner size?
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TECH Addict
Joined: Dec 2001
Posts: 2,298
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From: new england
Re: Ported runner size? 5.7 castings flowing 305 cfm are 215cc ported by me, LS6 casting 243 flow 310 cfm at 221cc also ported by me.
LS6 is superior at all lifts so difference of only 5 cfm at .575" lift is deceiving. Flow with LS6 intake is also in favor of 243 castings.
Stock measured port sizes are 241 casting: 200cc
243 casting is 215cc with 2001 LS1 intake valve used to measure.
LS6 is superior at all lifts so difference of only 5 cfm at .575" lift is deceiving. Flow with LS6 intake is also in favor of 243 castings.
Stock measured port sizes are 241 casting: 200cc
243 casting is 215cc with 2001 LS1 intake valve used to measure.
