Chicago Crew UnderBoss

iTrader: (1)

I want to run a replacement spring for my stock LS6 motor that has 23000 miles on it now and 3400 miles since being blown by an ECS D1SC kit. I really PREFER to run a dual spring like the Patriot dual golds but am concerned that the extra spring pressure from the patriot duals (vs comp 918 single spring) may over tax my timing chain, cam bolts, etc., on my 100% stock motor.

I want the insurance of a nice dual spring (to hold up valve if a spring craps out) but don't want to ruin anything by messing with something that is not broken. If you were me would you just go with 918 springs our Patriot golds on a stock blown LS6 motor running between 5 to 10 lbs of boost and not seeing more than 6000 rpm? My goal is to keep my stock LS6 motor alive as long as possible and will only go to a forged shortblock when i am forced to do so. I am also looking for the most reliablle set-up for my car that sees 10K miles a year and many miles while i am working, and i cannot afford to be breaking down when i am on the job!!

What makes the most sense given my goals?

TopFlite

Interested as well as i'm looking at Patriot golds very soon on a stock LS1...

1QuickT-A

iTrader: (12)

I don't see why the 918's wouldnt do the job..

Chicago Crew UnderBoss

iTrader: (1)

They would do the job but that is not really my question. The issue is will the patriot gold duals cause harm to my set up which is performing flawlessly, but adding the extra spring pressure? If not, i prefer the peace of mind of having a dual spring vs a single spring just in case a spring craps out when i am road racing or whatever this summer!

orangeapeel

iTrader: (18)

918's

DocEwww

iTrader: (1)

Stock pushrods? I remember seeing that they break with dual springs.

eamador11

918s are good to 600 lift so you should be golden. But I would check with some tuners first.

GuitsBoy

iTrader: (4)

For your consideration:

All aftermarket springs are stiffer and therefore inherantly more brittle, especially before you get heat in the motor.

If youre going to go for a more brittle spring, why not go for the added safety of the duals, even if the 918's are well within specs. After seeing a few people lose a spring (not 918's) I dont think ill ever run a single.

vettenuts

iTrader: (4)

The only two issues would be the stock lifters and the stock timing chain. The lifters should be fine, the timing chain will likely be fine also. There are a lot of tuners who upgrade cam/springs and re-install the stock chain. Perhaps if that is your primary concern, you should see what some of them have to say. I would lean towards the dual springs based on your requirements.

Chicago Crew UnderBoss

iTrader: (1)

Good feedback guys please keep it coming!

cantdrv65

iTrader: (3)

If you are going to upgrade the springs Id never leave the stock chain. I got away with the stock chain and 918's for 60,000 miles on my 99 Z28. My stock Ls6 chain with Isky springs broke after 20,000 miles and bent 10 valves. Id definitely replace the chain AND gears and in your case a 918 should be fine, but the PRCs or Patriots will provide more room to grow.

TopFlite

... Just FYI, the LS2 timing chain number is #12586482, which is an excellent replacement to opt for for the LS1 chain. From GM, our LS1 chain is now actually an LS2 when purchasing from the parts department.

Chicago Crew UnderBoss

iTrader: (1)

Knowleagable LSX People are really divided on this issue, as have tell me to leave well enuff alone and the other half say its excellent insurance for the piece of mind i am looking for. I called COMP today and they told me i will not be harming anything but do do hardened pushrods at the same time or are they just looking for a sale!!

Right now i am leaning toward patriot golds and hardend chromoly pushrods ad the spring pressue of thes dual spring is not much greater than the 918 single comp spring pressure. Here is the breakdown of open and close spring pressures between the 3 springs at issue here and maybe this will help you guys with some of your opinions.

LS6 springs-90psi/closed & 294psi/opened


918 springs-130psi/closed & 318psi/opened


Patriot dual gold springs-135psi/closed & 350psi/opened


THIS is not an easy decisin and I know common sense also dictates that if i want to freshen my springs this go with brand new LS6 springs!!!

vettenuts

iTrader: (4)

I wouldn't go with the LS6 with a supercharger.

The Alchemist

iTrader: (19)

My thought would be to go with the 918s since they are a lighter spring and mimic the factory bee-hive shape. This is done for a reason as it eliminates harmonics and all that good stuff. I don't think you are going to be in risk of breaking a spring, so the duals aren't as much of a benefit as you might have originally thought.

That's my oppinion, hope it helps. FYI I'm running 918s with my TR224/224 cam and have no issues with em. I've had em in for a little of 10k miles.

Chicago Crew UnderBoss

iTrader: (1)

TTT, looking for more knowleagable opinions!

Right now i am leaning toward patriot golds and hardend chromoly pushrods ad the spring pressue of thes dual spring is not much greater than the 918 single comp spring pressure. Here is the breakdown of open and close spring pressures between the 3 springs at issue here and maybe this will help you guys with some of your opinions.

LS6 springs-90psi/closed & 294psi/opened


918 springs-130psi/closed & 318psi/opened


Patriot dual gold springs-135psi/closed & 350psi/opened


THIS is not an easy decisin and I know common sense also dictates that if i want to freshen my springs this go with brand new LS6 springs!!![/QUOTE]