Pontiac GTO 2004-2006 The Modern Goat

LS3 Heads/Cam Swap

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Old 04-19-2015, 08:14 PM
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Default LS3 Heads/Cam Swap

Figured I'd start a thread here. Just finished up my LS3 Heads/Cam swap on my '06.



Parts List:

GMPP CNC Ported LS3 Heads 68.5cc
Cam Motion 226/232 .626/.626 112+2 LSA
Ported L76 Intake, Rails and Injectors
BTR .660 Dual Springs, Titanium Retainers
BTR 5/16's Push Rods
LS3 Rocker Arms w/ BTR Trunion Upgrade
TSP U/D Pulley (Couldn't use, defective part. Just slid right onto the crank snout)
GMPP High Volume Oil Pump
C5R Timing Chain
SLP 160* Thermostat
Cometic .040 Head Gaskets
GM Timing Cover, Valley Pan, Water Pump Gaskets, Front Seal, Head Bolts
ARP Cam Gear Bolts

Mods Already Installed:
Svede
Pacesetters
SLP LM2 Cat-back
LS7 Clutch
Old 04-19-2015, 08:16 PM
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Old 04-19-2015, 08:16 PM
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Old 04-19-2015, 08:17 PM
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Old 04-19-2015, 08:18 PM
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Old 04-20-2015, 05:37 PM
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Numbers are in! Still need to do driveability tune, should be done tomorrow!

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Old 04-20-2015, 06:09 PM
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bad *** tim! did you install everything yourself? and you went with an l76 over your FAST?
Old 04-20-2015, 06:24 PM
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Originally Posted by ULTIMATEORANGESS
bad *** tim! did you install everything yourself? and you went with an l76 over your FAST?

Thanks! Yeah, I did it all over the weekend in my driveway.

Wish I could've kept the FAST, but it was a cathedral port. I'm thinking about picking up the MSD intake in a few months though..
Old 04-20-2015, 06:29 PM
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Smile

serious question. shouldnt you be making closer to 500rw on a dyno jet with an m6?
Old 04-20-2015, 06:37 PM
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Originally Posted by ULTIMATEORANGESS
serious question. shouldnt you be making closer to 500rw on a dyno jet with an m6?
I thought it would be a little higher, but I'm not disappointed at all. Dyno #'s don't mean much to me, as long as it runs good at the track.
Old 04-20-2015, 06:41 PM
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Originally Posted by Tim94gt
I thought it would be a little higher, but I'm not disappointed at all. Dyno #'s don't mean much to me, as long as it runs good at the track.
true, i just thought a dyno jet would be higher thats all since my tuner uses a mustang dyno. it must pull like an animal. your dyno graph looks fine to me. nothing bouncing around.


did you gain a lot with a 102 on your old setup?
Old 04-20-2015, 06:48 PM
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Originally Posted by ULTIMATEORANGESS
true, i just thought a dyno jet would be higher thats all since my tuner uses a mustang dyno. it must pull like an animal. your dyno graph looks fine to me. nothing bouncing around.


did you gain a lot with a 102 on your old setup?
I only picked up 10hp/10ft/lbs peak going from shorties/stock intake to longtubes and the FAST. Picked up 25+ under the curve though. I think it was overkill for a bolt-on car
Old 04-20-2015, 06:51 PM
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25 under the curve is good. thats why a FAST imo is worth paying for though im sure adding LTs helped.
Old 04-20-2015, 06:57 PM
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Originally Posted by ULTIMATEORANGESS
25 under the curve is good. thats why a FAST imo is worth paying for though im sure adding LTs helped.
I definitely wasn't complaining, lol. Hard to say what was from the FAST or the Long tubes although, I think the FAST had more to do with the low end gain.
Old 04-20-2015, 07:01 PM
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Cool

wheres your FAST now?
Old 04-20-2015, 07:19 PM
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Originally Posted by ULTIMATEORANGESS
wheres your FAST now?
Sitting in a box. Why, you wanna buy it??
Old 04-20-2015, 07:52 PM
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lol,i wonder if its worth it on my setup.
Old 04-20-2015, 08:01 PM
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Originally Posted by ULTIMATEORANGESS
lol,i wonder if its worth it on my setup.
Only one way to find out, lol.

Probably looking for around $760+ shipping. Comes with all bolts, gaskets and a Vmax 102mm-90mm velocity ring. Only has 5k miles on it.
Old 04-20-2015, 08:05 PM
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Only thing you would need is injector O-rings since one was ripped during removal. I have 7 good ones though, lol..
Old 04-21-2015, 05:03 AM
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https://www.youtube.com/watch?v=_wFk...ature=youtu.be

Last edited by Tim94gt; 04-25-2015 at 07:12 PM.


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