L92 Headed LS2 Valvetrain help
02-21-2012, 10:02 AM
#22
Staging Lane
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I agree lighter is better and if the heads where bare I would have stuck LS3 valves in it.
From this thread: https://ls1tech.com/forums/generatio...ake-valve.html
From this thread: https://ls1tech.com/forums/generatio...ake-valve.html
They are 76 g., not 74, my REV L-92's were 103g., with a quality spring, you should not have any valve control issue's. I have a set of AFR 205 valves, I'll pull the scale out and see how much they are for a comparision. I ran those heads to 7k with the 8019 springs and LSK lobes with no issues.
02-21-2012, 10:04 AM
#23
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103g is less that what most stockers weigh. Another good post:
FWIW I weighed up some valves a while back:
Stock L92 intake-108.6 grams -- Some non magnetic alloy
Manley 11620 -119 grams- Intake- The Manleys are solid SS
Manley 11621-92 grams- Exh
LS3 intake -89 grams -- hollow alloy and my current favorite (NA) with single springs
LS3 exh same part# as L92 Exh- some non magnetic alloy
Stock L92 intake-108.6 grams -- Some non magnetic alloy
Manley 11620 -119 grams- Intake- The Manleys are solid SS
Manley 11621-92 grams- Exh
LS3 intake -89 grams -- hollow alloy and my current favorite (NA) with single springs
LS3 exh same part# as L92 Exh- some non magnetic alloy
03-11-2012, 12:34 AM
#26
Camshaft... You owe it to your self to get a cam spec for your own particular purpose, and app, and for only $25. is the best deal in the performance world today. camhelp@Guerragroup.com is where to go, if you want to get max power and not over cam your car for the st ask for shifting point at 6,600 and red line at 7k great for a dd.
03-12-2012, 01:58 PM
#27
TECH Resident
Your cam specs are in the ballpark. 223/232 is a good split. I'm not sure what lobes you are using, but I would keep the intake <.600 lift for a DD. Somewhere around .590 would be easier on the valvetrain. I have a 233/239, love it, but it is not a DD. My freind has a 228/234, it's borderline streetable. 223 should work great.
