ls2 w/ l92 heads cam question????????
04-26-2007, 02:17 AM
#1
ls2 w/ l92 heads cam question???????? I have a stock bottom end ls2 with some l92 heads that have been milled down to 64cc combustion chambers. I need help matching a cam with this setup! I am wanting to know how big can I go without flycutting the pistons. I am wanting a pretty descent sized cam. I have a small 224 cam and am wanting to ditch that and go bigger. I have also heard that these heads respond well to a lsa like 112 or 114. Any help would be greatly appreciated! Thanks
By the way my car is an m6 so no worries about a conveter.
By the way my car is an m6 so no worries about a conveter.
04-26-2007, 02:42 PM
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402 w/L92 heads I have a SLP 402 w/L92 heads (milled .020) with .053 head gaskets. I'm running a 236/249 646/615 112+2 cam. I have enough clearance without flycutting. I didn't beleive it so I took the shortblock/cam/heads to the guy who did the heads and he checked it again. Looks like there's plenty of room on my setup.
Bob K.
Bob K.
04-26-2007, 03:01 PM
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but with aftermarket pistons specialy in strokers tend to have larger valve reliefs and small dishes to lower the compression.
I don't have the Valvedrop for a l92 head with me at the moment to figure out the nominal clearance, but the lift at 110* and 106* to determine how large a cam you can use
With a 2.165 valve i'm guessing nothing larger than a low high 22X duration .588 lift. that still might be too close to call.
Tappet lift @ 110 or 106 (depending on ICL) X rocker ratio= Valve lift
Valve lift - Final valve drop (stock - total milling) + .040 safety = Valve relief Depth.
I don't have the Valvedrop for a l92 head with me at the moment to figure out the nominal clearance, but the lift at 110* and 106* to determine how large a cam you can use
With a 2.165 valve i'm guessing nothing larger than a low high 22X duration .588 lift. that still might be too close to call.
Tappet lift @ 110 or 106 (depending on ICL) X rocker ratio= Valve lift
Valve lift - Final valve drop (stock - total milling) + .040 safety = Valve relief Depth.
Last edited by Juiced; 04-26-2007 at 03:11 PM.
04-27-2007, 08:22 PM
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Originally Posted by superssport
I have a stock bottom end ls2 with some l92 heads that have been milled down to 64cc combustion chambers. I need help matching a cam with this setup! I am wanting to know how big can I go without flycutting the pistons. I am wanting a pretty descent sized cam. I have a small 224 cam and am wanting to ditch that and go bigger. I have also heard that these heads respond well to a lsa like 112 or 114. Any help would be greatly appreciated! Thanks
By the way my car is an m6 so no worries about a conveter.
By the way my car is an m6 so no worries about a conveter.
Thanks.
04-27-2007, 11:41 PM
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Originally Posted by RGKSR
I have a SLP 402 w/L92 heads (milled .020) with .053 head gaskets. I'm running a 236/249 646/615 112+2 cam. I have enough clearance without flycutting. I didn't beleive it so I took the shortblock/cam/heads to the guy who did the heads and he checked it again. Looks like there's plenty of room on my setup.
Bob K.
Bob K.
I'm using a similar set up and cam. Do you have any Dyno #'s....
