LS3 heads on LS2
Thread Starter
2nd Gear
Joined: Feb 2013
Posts: 2
Likes: 0
From: ELKHORN CITY KY
LS3 heads on LS2
Hey everybody , long time reader , first time member , im getn ready to do H/C on my 06 , already purchased ls3's and hav been reading on here bout different results , was planning on milling but don't wana fly cut , I have saw the list of the cam specs from guy's doing this swap , I wana go as big as possible without PTV problems , are most of the results with fly cutting or without ?? Car is auto , gona do a stall also , any info would be greatly appreciated THANKS
Drifting
Joined: May 2005
Posts: 1,655
Likes: 8
From: Avon Indiana
St. Jude Donor '09
A lot of things play into how much cam you can get away with(cam timing events,lift.etc). When I took the stock ls3 heads and switched to CNC with manely valves, I lost .023 PTV clearance. My cam is decent size but I fly cut .060
Race Director
Joined: Mar 2005
Posts: 11,549
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From: Southampton NJ
Instructor
Joined: Aug 2011
Posts: 179
Likes: 0
From: TX
I have a 2006 coupe and just had a new Ls2 built with the ls3 topend. I didnt flycut or mill the heads. Texas Speed has a new cam out for ls2 with ls3 topend. It's the biggest cam you can get without flycutting. It's a 235/239 .641/.615. Special lobes give it more PTV clearance. I have a 3200 vigilante stall in mine and this setup runs like a scalded ape.
Last edited by VETTEPLAY; Feb 18, 2013 at 02:50 PM.
Drifting
Joined: May 2005
Posts: 1,655
Likes: 8
From: Avon Indiana
St. Jude Donor '09
I have a 2006 coupe and just had a new Ls2 built with the ls3 topend. I didnt flycut or mill the heads. Texas Speed has a new cam out for ls2 with ls3 topend. It's the biggest cam you can get without flycutting. It's a 235/239 .641/.615. Special lobes give it more PTV clearance. I have a 3200 vigilante stall in mine and this setup runs like a scolded ape.
Burning Brakes
Joined: Mar 2007
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From: Wichita Falls, TX
Track Junky
Joined: Jun 2007
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From: Orlando Area
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Drifting
Joined: May 2005
Posts: 1,655
Likes: 8
From: Avon Indiana
St. Jude Donor '09
Burning Brakes
Joined: Nov 2011
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From: West Dundee IL
2024 C5 of the Year Finalist - Modified
St. Jude Donor '12-'13
I fly cut the pistons. Best mod I have done to date. Car picked up an honest 40 rwhp from just the heads and intake on a before and after pull on the same dyno.
Burning Brakes
Joined: Dec 2007
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From: Dyer IN
Le Mans Master
Joined: Sep 2003
Posts: 6,275
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From: Farmington CT
Cruise-In VII Veteran
For the DIY, selling off your original 243/799 heads and intake make the head swap doable for a few 100.
Awesome results, if anyone in New England would like an LS2/3 cylinder head/cam swap, please call the shop.
860-989-8972
Steve
Awesome results, if anyone in New England would like an LS2/3 cylinder head/cam swap, please call the shop.
860-989-8972
Steve