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Which heads for a LS3

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Old Nov 1, 2013 | 07:26 PM
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Default Which heads for a LS3

Car is a automatic with kook headers, intake, borla, and a 226/238 115+3 cam. Currently puts down 462 rwhp and 428rwtq. Work all done by me.

Was going to go put a blower on it, but may want to put heads on first. What heads? Looked at TEA stage2, trick flow, Lingenfelter, etc...

Not good with the ins and outs on heads. Please school me

Thx
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Old Nov 2, 2013 | 08:53 AM
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Anyone?
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Old Nov 2, 2013 | 09:51 AM
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have you looked at the GMPP LSX head? I'm told it is especially good with boost.
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Old Nov 2, 2013 | 10:46 AM
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Unless you're planning on a max effort setup trying to squeeze every single HP out of it while shaving off every fraction of a second in the 1/4 mile, I see no reason to spend money on cylinder heads for an LS3 engine that's about to get boost. The LS3 castings flow an absolute ton of CFM, and are more than sufficient for any boosted street car.

Not to mention, an additional 50hp is a pulley size away with a blower. Much cheaper than spending $1000-2000 on cylinder heads.

Just my .02....
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Old Nov 2, 2013 | 02:10 PM
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I would keep the heads you have.
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Old Nov 2, 2013 | 04:36 PM
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Ok, im actually surprised you guys are saying to stay with the stock heads. I know they flow an incredible amount, but was looking for that 490+ rwhp number NA.

Guess I should just wait and get my blower then....
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Old Nov 2, 2013 | 11:01 PM
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Originally Posted by ls1wolf
Ok, im actually surprised you guys are saying to stay with the stock heads. I know they flow an incredible amount, but was looking for that 490+ rwhp number NA.

Guess I should just wait and get my blower then....
I got 540 with CNC LS3 heads.
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Old Nov 3, 2013 | 10:01 AM
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Which ones ?
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Old Nov 3, 2013 | 10:08 AM
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^ I wouldn't bother with the heads
... If anything add a blower cam now to compliment the supercharger when you get it (: thanks me later lol
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Old Nov 3, 2013 | 01:55 PM
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Originally Posted by ls1wolf
Which ones ?
Wegner
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Old Nov 3, 2013 | 07:11 PM
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Originally Posted by 1MEANGS
^ I wouldn't bother with the heads
... If anything add a blower cam now to compliment the supercharger when you get it (: thanks me later lol
It is a blower cam
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Old Nov 3, 2013 | 11:21 PM
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Originally Posted by ls1wolf
Ok, im actually surprised you guys are saying to stay with the stock heads. I know they flow an incredible amount, but was looking for that 490+ rwhp number NA.

Guess I should just wait and get my blower then....
It's been done...With our "baby" 224/234 camshaft..Lots of compression, a good exhaust and good cam selection will make all kinds of power with stock LS3 castings.

http://ls1tech.com/forums/showthread...referrerid=183

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Old Nov 4, 2013 | 05:47 PM
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I just sold my blower setup...made 614/598 with stock LS3 heads and a 224/232 cam. Starting over and going back n/a though with a bigger cam, decked/CNC heads, all the bolt-ons/stall, gears/A6 upgrades...I'm doing it the way it should have been done to begin with. Back to front, bottom to top.

IMO, if you're planning on boost, just save your $$...or if you want a head upgrade now, just have your stock heads CNC'd.
Big heads are a bit of a waste on a boosted driver LS3 unless you're putting a stroker together or really getting serious at the track.
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