Started my valve spring swap!!!

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Apr 22, 2011 | 10:40 PM

#41

lucky131969

Tech Contributor

Joined: Jan 2007

Posts: 19,465

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From: Dyer, IN

Quote:

Originally Posted by NatB

Thanks _ I read thru the LS1 thread, apparently NO ONE knows the difference between Blues and Yellows......

The difference, other than the obvious color, the part number changed to 12586484.......and they don't break anymore....

Apr 22, 2011 | 10:59 PM

#42

NatB

Burning Brakes

Joined: Aug 2007

Posts: 831

Likes: 2

From: Houston Texas

Quote:

Originally Posted by lucky131969

The difference, other than the obvious color, the part number changed to 12586484.......and they don't break anymore....

The part number on the GM box I got today is # 12499224 - they are BLUE.

Does anyone know whether the specs are the same for Yellow versus Blue springs having this part number?

Apr 24, 2011 | 09:33 PM

#43

03BlkZ

Thread Starter

Drifting

Joined: May 2008

Posts: 1,517

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From: Hewitt TX

Well I finished my install today! Thanks to everyone who contributed to this thread and gave the advise I could use! This forum proves itself yet again!
Click the pic for video!

Apr 24, 2011 | 11:58 PM

#44

ZeeOSix

Le Mans Master

Joined: Mar 2002

Posts: 5,955

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From: PNW

Quote:

Originally Posted by 03BlkZ

Well I finished my install today! Thanks to everyone who contributed to this thread and gave the advise I could use! This forum proves itself yet again!

I might have missed it, but which valve springs did you install? Congrats on getting that out of the way ... valve spring swap is next on my list.

Apr 25, 2011 | 06:37 AM

#45

03BlkZ

Thread Starter

Drifting

Joined: May 2008

Posts: 1,517

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From: Hewitt TX

Comp 921's as my car already has a bigger cam! The previous owner had a cam installed and I had no idea what springs were in there. They were single springs with a yellow stripe.

Apr 25, 2011 | 08:33 PM

#46

03BlkZ

Thread Starter

Drifting

Joined: May 2008

Posts: 1,517

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From: Hewitt TX

I drove the car today and damn the valve train is pretty noisey now. I know its just the common sewing machine sound that these engines produce. Its just going to take a little getting use to.

Apr 25, 2011 | 10:44 PM

#47

NatB

Burning Brakes

Joined: Aug 2007

Posts: 831

Likes: 2

From: Houston Texas

Quote:

Originally Posted by 03BlkZ

I drove the car today and damn the valve train is pretty noisey now. I know its just the common sewing machine sound that these engines produce. Its just going to take a little getting use to.

I hear that going to aftermarket spring can result in more valve train noise maybe that's it. Enjoy the sound of a high performance engine