Nine Finger 02 Z28

iTrader: (11)

Anyone have any sugestions?Thanks

Beast96Z

iTrader: (21)

I'm using PSI 1225's good for .700". These are for .100" longer valves though. 1.950" install height I believe. I'm also using delwest "super light" titanium retainers. It's high dollar stuff, but should keep the bigger valves under control.

DavidNJ

Will his head fit that spring? CV also has a PSI LS 1512 that is rated for .65 but looks like it can be stretched to .67. 1.27 diameter and special surface finish. However, I wouldn't be surprised if they are $500-600/set.

Randy WS6

iTrader: (69)

PRC duel springs are good for .660 lift , im useing them with my Crane .650 lift

Nine Finger 02 Z28

iTrader: (11)

These ?

Patriot Valve Springs

Part #
Description
MSRP

8401
Partiot "Gold" .650" Lift Dual Spring Kit

Includes: Patriot "Gold" Springs, Titanium Retainers, Machined bases, Super 7 Locks, & Viton Rubber Seals
$255.50

Randy WS6

iTrader: (69)

Texas Speed Inc.


http://www.texas-speed.com/shop/item...d=173&catid=48

Nine Finger 02 Z28

iTrader: (11)

Thanks.

GuitsBoy

iTrader: (4)

Yeah, the PRCs are rated for .660 however im not entirely comfortable using them maxxed out. But your only option may be milling out the valve spring seats for larger diameter springs...

DuronClocker

iTrader: (25)

I'm using the Patriots with my .641/.646" cam and I haven't had a problem. I obviously don't have them shimmed at all.

The PRCs are rated .660 instead of .650 because I believe their retainers are a bit different and locate the spring slightly higher.

fast98

iTrader: (16)

i have the same cam but the prc springs and i shimmed them .015 i could have shimmed more........

ninobrn99

iTrader: (8)

what exactly are you all using for shimms and where are you getting them?

fast98

iTrader: (16)

i got mine from thunder racing, i think the kit is made by lunati specifically for ls1's it comes with 16 of each .015" and .030"