LS3 heads on LS2... How does it work out?
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Joined: May 2015
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LS3 heads on LS2... How does it work out?
Hey all! A friend of mine has a 2006 with LS3 heads installed? Just curious? Is it a direct swap or is there more involved? And what kind of power gains will this produce? I am thinking of doing the same with mine. Thanks!
Race Director
Joined: Dec 2013
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As for HP pick up, about 20 hp. Hence about 10 of that is heads, and about 10 of that is the better flowing LS-3 intake manifold.
As for the money your going to drop into new heads, and new intake manifold is you don't have the other mods to justify the heads in the first place, porting your LS-2 243 heads and LS-2 intake manifold will pick up more gains for less money instead.
Former Vendor
Joined: Aug 2005
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From: Lewisville TX
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
We did a lot of these swaps with and without cams back in 2005/2006 time frame. If you just do the heads and intake manifold the car will almost make what a normal LS3 does...so you pick up 20-30 hp over stock with it. Many would do a cam upgrade at the same time which was cheaper than doing AFR heads and a FAST intake manifold for approx the same HP, but the combo wouldn't make the low and mid range torque of the AFR setup.
Should be a number of write ups online on doing the LS3/L76 swap.
Should be a number of write ups online on doing the LS3/L76 swap.
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Joined: Dec 2016
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if you install the LS3 heads, you need to use a LS3 intake manifold, and the power gain is not worth the money.
Porting the ls2 heads will get you more power for less money ,or you can use PRC or Trick Flow Heads
http://www.texas-speed.com/p-1172-pr...-castings.aspx
Porting the ls2 heads will get you more power for less money ,or you can use PRC or Trick Flow Heads
http://www.texas-speed.com/p-1172-pr...-castings.aspx
