Info on heads
Thread Starter
Safety Car
Joined: Jun 2011
Posts: 4,352
Likes: 32
From: Canton Michigan
LS3 heads and ported LS2 heads will probably make within 5 rwhp Of each other. You will be able to sell that FAST in a couple hours for almost what you paid. Offer it up for $700 shipped and you be supposed how much interest there will be. That $700 will pay for LS3 heads and you can find a take-off LS3 intake for under $200. Sell the LS2 heads to a C5 guy for $400-500 and you may end up making a couple bucks.
just hurts to take a hit on it.And im guessing that the 102 fast intakes for ls3 aren't a huge improvement over stock like the 102 for ls2 is over the stock intake.
Wouldnt i want to port the ls3 heads as well thou?
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
As a point of reference, I sold my ported LS2 FAST for $750 in about an hour - that price was the low end of the spectrum. You may get over $800 shipped if you're patient.
Losing money when you sell car stuff is part of the game. The good news is that you can buy LS3 stuff at low cost to recoup much of your losses.
Losing money when you sell car stuff is part of the game. The good news is that you can buy LS3 stuff at low cost to recoup much of your losses.
Thread Starter
Safety Car
Joined: Jun 2011
Posts: 4,352
Likes: 32
From: Canton Michigan
As a point of reference, I sold my ported LS2 FAST for $750 in about an hour - that price was the low end of the spectrum. You may get over $800 shipped if you're patient.
Losing money when you sell car stuff is part of the game. The good news is that you can buy LS3 stuff at low cost to recoup much of your losses.
Losing money when you sell car stuff is part of the game. The good news is that you can buy LS3 stuff at low cost to recoup much of your losses.
Gonna have to do some more research for actually numbers of both I should net. over stock..
thank you
Last edited by UmX; Aug 2, 2012 at 02:23 PM.
Track Junky
Joined: Jun 2007
Posts: 4,074
Likes: 36
From: Orlando Area
Tech Contributor
If you're talking heads, I would say 5-15 rwhp. If its ported LS2 FAST vs. ported LS3 intake, i apile guess 5 rwhp at most. The LS3 intake is on par with an LS2 FAST intake.
Thread Starter
Safety Car
Joined: Jun 2011
Posts: 4,352
Likes: 32
From: Canton Michigan
Only thing im lacking is heads. I got the vr5 cam 236/238 .601/.605 113 LSA, American racing headers, UDP, and that 102 with a ported stock throttle.
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Advanced
Joined: Jul 2012
Posts: 59
Likes: 0
From: Louisville Kentucky
The L92 conversion with L76 intake would serve you best.I think as you could sell the fast 102 and get a L76 intake for $225 and get a CNC L92 head for $500 less and that out flows a CNC Trickflow and blows away a fast as cast Trickflow head(no offense TFS owners) just look at a the head flow chart numbers of a L92 350cfm on intake and 265cfm on the exhaust side.
Drifting
Joined: Oct 2004
Posts: 1,790
Likes: 29
From: STL MO
St. Jude Donor '09-'10
The L92 conversion with L76 intake would serve you best.I think as you could sell the fast 102 and get a L76 intake for $225 and get a CNC L92 head for $500 less and that out flows a CNC Trickflow and blows away a fast as cast Trickflow head(no offense TFS owners) just look at a the head flow chart numbers of a L92 350cfm on intake and 265cfm on the exhaust side.
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
LS3 heads, still have their challenges. Oiling draining issues are the biggest challenge of LS3 heads.
a high volume oi pump can pump too much oil into the LS3 heads, and the drain ports are too small in the LS3 head so does not drain out well and the oil pools up there. Drying out crank bearings.
Thread over in AutoX and Roadracing about LSx Oiling
a high volume oi pump can pump too much oil into the LS3 heads, and the drain ports are too small in the LS3 head so does not drain out well and the oil pools up there. Drying out crank bearings.
Thread over in AutoX and Roadracing about LSx Oiling
Advanced
Joined: Jul 2012
Posts: 59
Likes: 0
From: Louisville Kentucky
TFS heads are undoubtedly the most reputable aftermarket head on the market for LS2's.Port velocity is very important,but vacuum can create velocity by lobe separation on a cam(very good point though cathedral ports have excellent velocity).Also I would stay away from GM LS3 casting and go for a Procomp as they have addressed this issue(so I have been told).SLP swears by the LS3 conversion and claim no issues.You definitely could do a stock cam with that head flow and 1.8-1.85 rockers.Just a thought if someone wanted a super street-able combo try this.
Stock cam
L79 intake
CNC 64cc L92 heads
1.85-1.80 rockers
160 thermostat
Varaam Cold-air (ram-air)
Headers w/cats
Catback exhaust
and a good tune
440-450 RWHP
435-445 RWTQ
This is the same nearly as SLP ZL500 kit but with better heads(they don't cnc ports only cambers) and cold-air intake not a ram air and the 1.85 rockers(they use 1.7)+15-20 RWHP with these changes to the Slp combo which has dynoed at 430RWHP/430RWTQ per Vette magazine.Also this combo would out power a (stock)Z06 especially in Torque with a super smooth idling STOCK CAM.And if you want more power down the road supercharge it for 550-600 RWHP pretty easily and use thicker head gaskets to lower the compression for safety and create volume.Just my 2 cents.