Question about heads?! help!
12-26-2006, 05:37 PM
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Question about heads?! help! OK im a noob at most of this stuff....but im learnin as i go. Buildin up a 408 stroker, but i need some help with the heads. I got a set of ported heads that flow like 270cc at 600 lift and 205cc at 600 on exaust. now i got springs good to 680 lift and titainium retainers and new valves by ferra, but i was wondering if i should get the heads ported out more, or if thats even possible. and i have a .595\.601 112 sep.cam, but should i swap it for something more radical, like say a 630ish lift or something? im wanting to stay N/A for a while anyway, so ANY advise from you ls1 know-it-all geniuses would be great!! 
thanks
thanks 
12-29-2006, 07:02 PM
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get rid of those heads, and buy alot bigger camshaft. no offense, but head seems to flow poorly, and i'm about sure the cam isn't near big enough. i would be using atleast an 225+ int. runner head, fast set up, and something high 24?/25? duration with .640/.620 on a 112. hope that helps.
12-29-2006, 07:14 PM
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408 w/L98 Heads / L76 Intake Look into L98 heads (about $1000 with rockers, etc) and the complete L76 intake ($550). Contact Patrick G for a cam recommendation and your good to go. You will need to flycut the pistons to clear the massive 2.16" intake valves.
There is a sticky in the L92 section that gives the flow # for the heads.
Bob K.
There is a sticky in the L92 section that gives the flow # for the heads.
Bob K.