call up thunder racing and tell them you want the cheatr cam. Keep the stock manifold and such on the motor, because thats what the cam thrives off…You can buy the whole cam/valvetrain kit right from them.
I am not sure but if you checked the stats of the Cheatr cam, you will see it is by no means a small cam…its 117 LSA makes it invincible.
even with 380-400rwhp, its such a small margin in power that either way, the car will rip.
Get a ported LS6 oil pump. They are around $130 and its better to be safe then sorry. Mine increased my oil pressure by 20psi across the board. The only problem with that is you will burn a little bit more oil then the LS1’s already do. Just the nature of the beast.
if you have any other questions feel free to shoot me a PM and we can talk more.
LOl im a little confused but what is this “GTR” you speak of? Pics?!?