foose04

iTrader: (3)

I'm not sure if it's related or not, but I have less then a year of wear and tear on these and I pulled the covers tonight for my cam swap to find two broken....Not sure what the heck caused this, I of course warm my truck prior to beating on it and was only running a 02 ls6 cam, most shifts at 6500 with a few very rare hits of 7k.



Bad news for me is I need these springs ASAP as I have two drag event this weekend. After searching my only real option with in stock dual springs and 2 day air, I ordered from Summit Racing Comp Cams Dual 26926TS-KIT. I called Comp Cam direct as these have a rated seat pressure of 129. They recommend a .030 shim to be used for my FI setup and my .581 225 cam. New seat pressure comes in at 147.

Info on springs: COMP Cams 26926TS-KIT - COMP Cams High Performance Valve Spring Kits - Overview - SummitRacing.com

Hope they last longer then these PAC's. They will be getting a phone call from me tomorrow. I'd like to get the whole set replaced.

ltr450ryder

iTrader: (13)

Dude that blows. And I hope u get it squared away in time for the race!

Ferocity02

iTrader: (59)

Are heavier springs needed for FI? Or are springs still chosen based on the cam and lift?

KDavis04ss

iTrader: (16)

Well That looks familiar..... They backed it up though and over nighted me a new set.

https://www.performancetrucks.net/fo...g-help-471295/

sprayedenali

iTrader: (11)

damn the luck!!! i have their 1521 springs and theyre great! hope you get ti sorted out!!! im anxious to see the results of the new cam!

foose04

iTrader: (3)

Has to be random... but we broke the same one. Crazy. I also had another one break to though because i'm hardcore like that.

stock48

iTrader: (16)

I would say valve float did that but I don't really see how with the Z06 cam and small valve head. I have ran tons of the pac 1218's and Isky 165's with no probs. I wonder if that nitrated spring is more brittle...

1989k1500

iTrader: (23)

Wow, don't see PACs break very often.

Byrdman11

iTrader: (1)

Luck it didn't drop a valve.

TurboBerserker

iTrader: (1)

Brian Tooley (of TEA/TrickFlow fame though he no longer works for TF) has a few sets of quality springs put together for sale. Might be worth a call to him...

Basically, Brian is questioning a few of the spring vendors supplying some of the big names in the industry, and flat out recommends that if you have springs that are a flat silver color like in this picture, you should consider changing your springs.



His new springs are from the same vendor that TEA used from 2005-2010 (which had 0 spring failures...)