Need New Valve Springs. Suggestions?

[Naaman]

My valve springs are at the limit of their serviceable mileage.

I have some machined heads and mild cam (360 whp) with room to grow to about 400-450 whp. I'm still running stock intake/exhaust, but may change these out eventually.

I've done some cursory searching through various options, but not sure how to differentiate what's available.

I run Amsoil Z-Rod exclusively in the engine, in case that matters.

[SMWS6TA]

Brian Tooley Racing......

[mrr23]

i'll be using vinci high performance SS SK dual springs for my upcoming maintenance swap

LS1

HIGH TENSILE CHROME - SILICON STEEL - HIGH LUSTER FINISH
INCLUDES SUPER LIGHTWEIGHT TOOL STEEL RETAINERS, SPRING LOCATORS ,VITON SEALS , HARDENED LOCKS
SPECIALLY DESIGNED FOR STREET / STRIP LSX APPLICATIONS

DROP-IN KIT, NO MACHINE WORK
SPECS:
155 lbs @ 1.780"
360 lbs @ 1.230"
380 lbs @ 1.180"
400 lbs @ 1.130 "
coil bind @ 1.070"
od; 1.300
id: .509
will handle .660" lift with ample coil clearance

[Naaman]

Ah, yes... Silicon Steel... I just learned about that researching magazine springs. It seems like a no brainer in a valve spring application.

Vinci's website says the dual springs will not fit iron heads... Not sure whether mine are iron (but I think they are).

Scott, thanks for the reference.

Now I have a bunch of homework to do.

[mrr23]

Iron heads come on truck motors like 6.0. 5.7 are aluminum. If you want to make sure, put a magnet to the heads.

[Naaman]

Oops. I thought that the LS1 had aluminum block and iron heads, while the truck motors had iron top and bottom.

[SMWS6TA]

GM got away from iron heads when they went to GEN III LS.

[mrr23]

pictures of the vinci springs i am installing this weekend.

http://www.ls1.com/forums/f117/sprin...lation-187607/