cgslow77

iTrader: (2)

i have a lq4 and looking at using comp cam 222/224 566/568 cam with stock push rods and ls6 springs.... wondering if this combo will work together, reving to 6000 rpm. thanks, chuck

TooLateVTEC

iTrader: (2)

Negative man.

The LS6 springs will not hold the lift for one thing, and will coil bind like a **** im sure. Stock lift on the later LS6 (2002+) is .550 and your over that a fair amount.

cgslow77

iTrader: (2)

look at this tho

http://www.summitracing.com/parts/NAL-12499224/#

TXARKITEKT

What type of lobe design on the cam? And yes, +1 on the springs not being rated to sustain that type of lift. I would go with 7.400 hardened pushrods and Comp 918 springs at minimum.

cgslow77

iTrader: (2)

the springs i bought say there rated to go to 570

02*C5

iTrader: (1)

No matter what you always want to go .050 higher in your spring lift capability of the total cam lift number. Ask any one and they will agree. Stock rods are good for a stock cam. Why you ask because the are not made to deal with more aggressive lobe ramps and they will become the weakest link in your valve train. On the valve train there are two things that you can put something none stock and they will work and those are the heads & rockers. Even on heads it is still recommended to get them ported and polished to cam specs to get the best performance out of the cam.

How many miles does your engine have? If your over 50K I would also think of replacing the lifters. if your over 80K miles I would STRONGLY recommend replacing lifters, and oil pump.

cgslow77

iTrader: (2)

ok so if i get the 918s will i have to change the retainrs? or can i use stock ones... on a budget here. the motor only has 40k on it btw

SweetS10V8

iTrader: (4)

918s use the stock retainer and locks. Im running 918s on my .607/.621 lift cam myself.

02*C5

iTrader: (1)

Yeah no issues with stock retainers and locks. I would just check them out every 10K mile just in case. If your beating the hell out of her every weekend I would do every 5K mile check on them. Just really to try and circumvent a break down.

Good luck on the build.

printmanjackson

iTrader: (1)

how much lift will stock rockers handle before you need to go to a roller tip?

Sales2@Texas-speed

iTrader: (5)

I'd agree, definitely get some better springs than the LS6's, be it the PAC 1218's or Comp 26918's! We've got both in stock at competitive pricing. Let us know if we can help