b4ctrooper

Starting to dump money into my build. 6.0L, stock cam, and a home turbo system. Turbo choice not made yet, but shooting for 650-700 at the tire. My price fifference between the GM Perf springs is about half of the PAC springs. I'm trying to save in some areas to have more money for the turbo install. Anyone happy with the GM Perf springs in similar builds?

hellbents10

iTrader: (10)

The GM springs will be great with the stock cam. I have made over 800rwhp with the LS6 springs in turbo LS engines with stock cams.

69-chvl

iTrader: (11)

Lotta discussions out there regarding adequate spring pressure with turbo motors. I ran the LS6's as did Hellbent and then went to the 1218's and now dual BTR's. Never really noticed a difference other than what I think is increased lifter noise with more and more pressure.

b4ctrooper

Ok, thanks for the responses

a4ls2goat

wow. and people swear of valve float with the ls6 springs on 15psi. good to know

69-chvl

iTrader: (11)

It would be nice to find a shim that would allow the use of the factory seal/seat so we could increase the pressure a bit

Turbo D

iTrader: (3)

We went 9.25@148 with the $60 blue ls3 springs with a 216/220 trick flow cam on 18lbs with stock pushrods in a L33. It wouldn't go any faster with more boost so we figured we were maxed out spring/pushrod wise.