darknessxyz

iTrader: (22)

With a small cam like mine (224/230 .581/.588), did you guys recommend shimming a .650 dual spring or just go with a set of .600 single? I don't want any valve float or drop valve happen. However, after read the thread about a cam journal being eaten by the lifter bcuz of too stiff valve spring, I've concern now.

I've both springs and the head are ready to assemble. I need to tell the shop what to do.

darknessxyz

iTrader: (22)

Any suggest?

A.R. Shale Targa

iTrader: (2)

Seemzs like B-hives are more gentle but duals are stiff. I went with Lunati
duals for $225, springs, retainers, seals, and locators

Johnnystock

iTrader: (6)

I'd go with singles, no shim. Lunati springs are cheap!!!^^ I'll have a look!

Justinmofo

iTrader: (1)

Just do it once. PRC .650 double springs.

vettenuts

iTrader: (4)

What? What was too stiff of a valve spring? This was more likely a cam or lifter issue.

farmington

iTrader: (14)

The doubles would allow a touch of safety, but they also stress the retainers and keepers more along with the lifters and the cam. They also eat up valuable horsepower to turn the motor over with the heavier spring pressures. I have a similar cam and went with the beehives and I'm not worrying about them a bit. I'll probably enjoy at least 5hp more due to the lightened spring load too.

Omega Doom

iTrader: (2)

X2 I concur!

crainholio

iTrader: (2)

Beehives, either PSI or PAC would be my preference.

Sprayed1998

iTrader: (10)

PRC .650 or Patriot Golds, my old trick flow duals saved my motor twice. I run prc 675 eht springs in my 402

03EBZ06

comp duals

darknessxyz

iTrader: (22)

Read that thread again and the can lobe eaten by the lifter more likely caused by the valvetrain. I'm not running a high lift cam and won't go any bigger so I guess I'll go for single spring.

Sprayed1998

iTrader: (10)

What happens if the single spring breaks? Why risk the entire motor to save less than $100.00.

crainholio

iTrader: (2)

This is a good point, but it sure seems that the bulk of the failures we're seeing here on LS1Tech are lifter/lobe damage not related to valvespring breakage.

I'm not saying that there's one spring design that is best for all cam profiles, dual springs definitely have their place.

However, running major spring rate w/ stock lifters and aggressive lobe ramps seems to be a common theme in many of the "valvetrain noise" threads here...including mine.

2000ws6transam

iTrader: (5)

where do you buy these at? im going to upgrade to 1.8s so my lift will be .566 / .570 ls6 springs i dont wanna trust to that much lift lol i only spint it to 5400 RPMs

A.R. Shale Targa

iTrader: (2)

Advanced Induction sells PSI springs

darknessxyz

iTrader: (22)

Most the time I saw Beehives broke, they run with a higher lobe cam like 23x/23x and very close to .6xx lift. I'd like to see people with 224R, TR224 or a cam similar to mine what kinda spring they're running.

03EBZ06

SOME DATA FOR YOU:
A few years back I broke 10 of 16 behive (918) springs with a SMALL 216/222-116+3 cam. Comp has since upgraded those springs and I don't know that to be a problem any longer, but every since then
nothing less than duals on my stuff. Interesting enough, the stock ls6 springs never broke.

Using STOCK lifters and TFS215 heads (650 dual springs) and a 224/228-112+2, never had valve problems, at least that I knew of.

Note, the inner spring is more of a safety net. Better for a valve to fail in closed position vs drop in to the piston.

2000ws6transam

iTrader: (5)

i remember that, i thought comp did some changes? Still hard to go back to someone after something like that happens. I have always had good luck with the ls6s used them stock and with 2 small cams. went dual springs with a 224/ .591 cam and smashed the crap out of my seats.. so i wanted to stay smaller on the cam with singles.

darknessxyz

iTrader: (22)

My single spring are from patroit not comp cam iirc.