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Can I run ported LS3 heads on my 370CI LS1

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Old 04-12-2010, 01:42 PM
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Default Can I run ported LS3 heads on my 370CI LS1

I posted something in the LS1 section as well

Here is a run down of my shortblock
-Stock LS1 5.7L Aluminum Block.
-Block Cleaned, Magna-fluxed, Block Painted Black

Block has been Re-sleeved, 4.0 Bore and honed an adtional .030"
Block has been Decked .015" for added compression

-Aluminum LS1, 4.030" Bore = 370 Cubes.
-LS1 3.622" Crank.
-R.P.M. H-Beam Rods with ARP rod bolts
-Mahle Forged Pistons 4.030" Bore, Plasma Top Ring -4 valve relief
-Comp Cam Custom Gind 238/254 .605 .612 112LSA 112ICL
-Comp Pro Magnum Lifters
-Stock Lifter Trays.
-Engine Balanced and blue printed
-Clevite H Series "race bearings"
-Roll Master Duel Timing Chain
-LS6 Oil pump

Going to run a 200-250 wet nitrous shot and a FAST 102mm intake and 102mm TB.
I already have a 100mm MAF and lid
I would like to see if I can run a set of ported LS3 heads on it, I was looking at the TSP LS3 heads. Any other suggestions?

Thanks Art
Old 04-12-2010, 01:47 PM
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yes you can
Old 04-12-2010, 01:50 PM
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I would pick your heads first and then your cam.

But yes, they will fit on your shortblock.
Old 04-12-2010, 02:20 PM
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Thanks

I can change the cam, it was in the shortblock when I bought it. shortblock has 0 miles after rebuild...

IF I change cam any suggestions there????
Old 04-12-2010, 04:02 PM
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IF I change cam any suggestions there????
Get Patrick_G to spec you one. I never see any complaints from his cams just lots of great numbers!
Old 04-12-2010, 07:16 PM
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VA speed has spec'd a few 6.0's around 500 rwhp with L92 heads
Old 04-12-2010, 07:52 PM
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For heads, check WCCH.
Old 04-12-2010, 09:41 PM
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Personally Im running Lingenfelter CNC LS3 heads.



Old 04-13-2010, 08:32 AM
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SweetS10 how much were those heads?
Old 04-14-2010, 08:14 AM
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anything 4" bore or bigger will take the LS3/L92 head.
Old 04-14-2010, 10:19 AM
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hey bro who Re-sleeved your block and what liner did they use
Old 04-14-2010, 10:36 AM
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thats gonna rock bro good luck
Old 04-15-2010, 08:59 AM
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Originally Posted by 2020
hey bro who Re-sleeved your block and what liner did they use
A local block shop in Denver CO. I am not sure what they used. I bought from a guy that works as a machinst at the shop.
Old 04-15-2010, 12:16 PM
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Originally Posted by 4U2NV-SS
SweetS10 how much were those heads?
$2200ish, $1100ish if you send the casting in.
Old 04-15-2010, 01:06 PM
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Originally Posted by SweetS10V8
$2200ish, $1100ish if you send the casting in.
What do they flow? better then the TSP LS3 heads?
Old 04-15-2010, 01:37 PM
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Originally Posted by 4U2NV-SS
I posted something in the LS1 section as well

Here is a run down of my shortblock
-Stock LS1 5.7L Aluminum Block.
-Block Cleaned, Magna-fluxed, Block Painted Black

Block has been Re-sleeved, 4.0 Bore and honed an adtional .030"
Block has been Decked .015" for added compression

-Aluminum LS1, 4.030" Bore = 370 Cubes.
-LS1 3.622" Crank.
-R.P.M. H-Beam Rods with ARP rod bolts
-Mahle Forged Pistons 4.030" Bore, Plasma Top Ring -4 valve relief
-Comp Cam Custom Gind 238/254 .605 .612 112LSA 112ICL
-Comp Pro Magnum Lifters
-Stock Lifter Trays.
-Engine Balanced and blue printed
-Clevite H Series "race bearings"
-Roll Master Duel Timing Chain
-LS6 Oil pump

Going to run a 200-250 wet nitrous shot and a FAST 102mm intake and 102mm TB.
I already have a 100mm MAF and lid
I would like to see if I can run a set of ported LS3 heads on it, I was looking at the TSP LS3 heads. Any other suggestions?

Thanks Art
How much was it to re-sleeve it?
Old 04-15-2010, 02:06 PM
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Deffinately check with other sources about the cam but with split you have toward the exhaust that seems like a l92/ls3 cam.



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