rennocneb

iTrader: (1)

I have an 08 g8 gt and doing a head and cam package wandering who makes a good decent priced rocker system for the car. The stockers i hear are ok but man i just dont trust factory GM stuff at over 600 lift.

XtraCajunSS

iTrader: (2)

A simple answer to your question is, GM. The stock rockers are the best route to go. You can do the trunion upgrade for improved reliablilty but any other rocker on that head will induce valvetrain instability.

We recently did a cam in our G8 here. Baseline runs at the track were 13.80 @ 104 bone stock.

Mods include:
Thunder Racing TRuTorq Level 1 cam 219/224 .60x"/.60x" 115 LSA
7.425" pushrods
LS7 lifters
1 7/8 Kooks headers with custom X-pipe and Magnaflow mufflers
PTC Billet 2600 stall Converter
Nitto's on stock GTO wheels
Stock rockers
TR DOD delete kit
Vararam CAI
Completely stock heads
Completely stock intake

Results:
415RWHP Mustang Dyno (unlocked)
12.16 @ 113

Let me know if I can do anything for you.

Thanks,
Shane

rennocneb

iTrader: (1)

so the comp, yella terra. mast etc offset rocker setups made for l92 heads are a worse rocker than a 7 dollar stamped gm piece?

TransWS6Am

iTrader: (41)

stamped? we aren't talking about a small block Chevy here, we are talking about a modern GEN IV engine, the stock rockers are cast and not stamped, and a very good rocker, all they need is the trunion upgrade and they are fine.

XtraCajunSS

iTrader: (2)

The fact is, yes. Trunion upgrade and you are all set...

Z500HP

Can you install the Trunion centers or will a shop be needed?

ChucksZ06

iTrader: (9)

You can do it. I have the stock rockers on my ls7 build with .661 lift cam and no problem although I believe that is close to the limit. Valvetrain stable at 7k +.

e-racer-ls-1

iTrader: (1)

I work for a G.M. dealer and never seen a rocker fail.Pistons once in a while.Dropping valves is the most common failure.Just my 2 cents.

Richard@WCCH

iTrader: (3)

I've had a stock rocker fail a few years ago. The side of the needle bearing cage broke and all the needle rollers flew out and have been swimming around in the oil pan. Every time I pull the drain plug there's a needle stuck to the magnet on the plug. Makes me wonder if it's a new needle or an old one. Pull the cover almost every oil change. What a pain!
We've been selling upgraded factory rockers that use a bronze bushing instead of a roller bearing. There are no moving parts. The compay who make them is CHE Precision and they claim that their upgraded rockers have been Spintron tested and stable to 10,000rpms. The bushing eliminates all the moving parts. To cap it off they use a hardened steel shaft with heavy duty clips to hold the assembly together.
Bullet proof...........


Richard

SweetS10V8

iTrader: (4)

I, and most others upgrade to the Comp trunion upgrade. At $135, they dont break the bank

serpentnoir

iTrader: (2)

I don't see prices on your site. What do those retail for?

Lloyd-TX

iTrader: (1)

http://cheprecision.com/CHE_Catalog.pdf

See page 8.