LS9 or LS7 cam swap???
#1
Pro
Thread Starter
LS9 or LS7 cam swap???
Has anyone done this to their LS3? I am looking to get a bump in power but still need to pass smog/emissions. Any feedback would be greatly appreciated?
#2
...LS9 was done on the Camaro forum= 13 rwhp..LS7 would be about the same. You probably could get about 10-12 rwhp from the SLP 1.85 rocker arms instead of changing/doing the cam but would need to change the valve springs.
Last edited by Wallacefl; 07-20-2014 at 09:54 AM.
#3
Drifting
Btw, you have to change the cam sprocket too since both are 3 bolt type unlike the 1 bolt in the ls3.
#4
Not even worth the hassle and cost for minimal gains! Go with a custom grind, get 40HP, maybe get the heads ported and polished while you're at it and get another 15-20 HP. Be sure to do the dual rocker springs while your swapping out the cam.
#6
Melting Slicks
The GM Hot Cam is rated at 480+ flywheel HP...........a substantial gain, on the LS3, with just a drop in and retune.
My thoughts are "GO BIG or GO HOME". It's not worth the time and logistics.
My thoughts are "GO BIG or GO HOME". It's not worth the time and logistics.
#8
Le Mans Master
That combo is an LS7 cam with CNC ported LS3 heads. For all of that, you get a whoppin' 40 hp increase? Get in touch with Pat G and get him to spec you a cam that will pass emissions. He's done a jillion of them.