AFR heads advice or stay with ls3 heads
02-17-2010, 03:06 AM
#1
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AFR heads advice or stay with ls3 heads G8 2008
Automatic gear 4 speed aftermarkets Clutch rebuilt to handle over 600 RWHP
Engine 6.0 ls2 Block
Full length Header and Exhaust system from Xforce performance.
OTR air intake system from JHP performance.
Cam Gt11 from Lingenfelter Performance.
Ls3 heads standard (all G8 cars in the Middle East come with these heads I did not install them).
SLP under pully
Lower Kit form JHP performance
I would like your assistant and advice to weather I should inshallah AFR heads 225/62cc with a fast intake to my card and approximately what might I gain as my current heads are in the 70cc right?
Automatic gear 4 speed aftermarkets Clutch rebuilt to handle over 600 RWHP
Engine 6.0 ls2 Block
Full length Header and Exhaust system from Xforce performance.
OTR air intake system from JHP performance.
Cam Gt11 from Lingenfelter Performance.
Ls3 heads standard (all G8 cars in the Middle East come with these heads I did not install them).
SLP under pully
Lower Kit form JHP performance
I would like your assistant and advice to weather I should inshallah AFR heads 225/62cc with a fast intake to my card and approximately what might I gain as my current heads are in the 70cc right?
Last edited by mohammed_k81; 02-17-2010 at 03:07 AM. Reason: to be more clear
02-17-2010, 04:37 AM
#2
The car is Lumina SS Right??
Going from 70cc to 62cc and Fast intake over L76 Intake will get you atleast 40rwhp IMO.
But you should check with 62cc AFR Heads how much the compression is gonna be??
How much power did the car make with your setup?? the best we got with that setup is 425rwhp with auto in Jeddah...
Going from 70cc to 62cc and Fast intake over L76 Intake will get you atleast 40rwhp IMO.
But you should check with 62cc AFR Heads how much the compression is gonna be??
How much power did the car make with your setup?? the best we got with that setup is 425rwhp with auto in Jeddah...
02-17-2010, 05:07 AM
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My car is 441 RWHP.
If I install AFR and Gain 20 RWHP that would be fantastic i dont think it will make more then 20 RWHP gain
Yes its a Lumina ss just same as G8
If I install AFR and Gain 20 RWHP that would be fantastic i dont think it will make more then 20 RWHP gain
Yes its a Lumina ss just same as G8
02-17-2010, 07:34 PM
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You could get another set of L92 heads from WCCH that will outflow the AFR 225's and have your existing manifold ported to match. Then you could say your car was stock and no one could actually challenge you.
Really comes down to how far do you plan to go in the future with modifications. Lots of boost or N2O - AFR's might be better choice due to thicker deck. If you are staying NA, ported L92's are tough to beat without going to LS7 style and they won't fit your block.
Really comes down to how far do you plan to go in the future with modifications. Lots of boost or N2O - AFR's might be better choice due to thicker deck. If you are staying NA, ported L92's are tough to beat without going to LS7 style and they won't fit your block.
02-17-2010, 11:48 PM
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I would stick with the L92 but problem is I would have to ship them to the states takes too much time and money as I am in Kuwait.
Last edited by mohammed_k81; 02-22-2010 at 04:11 AM. Reason: grammer
02-22-2010, 04:10 AM
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I would just like to inform you that I have installed the AFR head with the 92 fast my car has jumped 24 Rwhp my idol is a million times better My results are 464 Rwhp now am thinking of changing the bottom end into a 408 Stroker.
I can post my Dyno graph later if you wanna see it
I can post my Dyno graph later if you wanna see it
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02-22-2010, 06:49 PM
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Why not buy a set of L92 heads already ported and save yours as a core to be used again or sold. WCCH sells a great set for around $1800, lot less than the AFR's and there are other good suppliers as well.
02-22-2010, 10:33 PM
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02-23-2010, 02:38 AM
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AFR's are better than the stock LS3 heads. But that's not saying much because the LS3 kick major booty as is...especially for the price. (free because you have them already.)
Unless you're getting into forced induction or nitrous, the LS3 heads should be plenty. Just have some porting work done to the heads, with perhaps some new springs, rods, and rockers. Perhaps even deck them a bit or use thinner head gaskets to get compression up a tad.
Unless you're getting into forced induction or nitrous, the LS3 heads should be plenty. Just have some porting work done to the heads, with perhaps some new springs, rods, and rockers. Perhaps even deck them a bit or use thinner head gaskets to get compression up a tad.
02-23-2010, 02:53 AM
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AFR's are better than the stock LS3 heads. But that's not saying much because the LS3 kick major booty as is...especially for the price. (free because you have them already.)
Unless you're getting into forced induction or nitrous, the LS3 heads should be plenty. Just have some porting work done to the heads, with perhaps some new springs, rods, and rockers. Perhaps even deck them a bit or use thinner head gaskets to get compression up a tad.
Unless you're getting into forced induction or nitrous, the LS3 heads should be plenty. Just have some porting work done to the heads, with perhaps some new springs, rods, and rockers. Perhaps even deck them a bit or use thinner head gaskets to get compression up a tad.
How much would it cost me for a full bottom setup?
