How old is too old...
 

When it comes to valve springs? What is your thoughts on the subject? My beehives are now 5 1/2 years old with 25-30k miles on them.

I'm considering doing a swap for some PAC 1518's and upgrading my valve terrain w/ NSA rockers. ( I don't like the idea of turning 6600+ rpm on SA rockers.

Well I run Pac springs and love them. That being said the correct thing to do is have a machine shop put them on a valve spring compressor and check them out, they should be able to tell you..:bigthumb:

I think I will be picking up the PAC's either way, it's too good of a deal to pass up. With that said, I will get simmons to check out my old ones. With any luck, I can sell them and recoup some of my money.

dad has some NSA rockers for sale

i just started giving thought into this as well, i know i am fine for now, but i never really thought about it since i never ran anything crazy in the past (i still don't but now more than my old lil 918's lol)

Brand and price?

may want to check yours for rust, they may be close to rusting through as much as your car sits :)

How young is too young is the questiong you should be asking.

I hate you...

just stop being a jew and buy new ones and toss the old pieces of crap.

Fixed :cheers

Comp Cams 1305 Pro-Magnum Rocker Arm 1.6 Ratio - $175
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Rocker Arm Mounting Style(Stud),
Rocker Arm Ratio(1.6)
Rocker Arm Style(Full roller)
Stud Size(7/16 in.)
Rocker Arm Material(Chromemoly steel)
Self-Aligning(No)
Rocker Arm Body Style(Standard)
Rocker Arm Nut Style(Polylock)
Slot Width (in)(0.562 in.)
Maximum Spring Diameter (in) (1.500 in.)
Rocker Arm Finish(Natural)

ARP 7/16" Rocker Arm studs - $50
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ARP 7/16" Pro Series Rocker Studs (ARP 234-7202)

Guideplates - $25
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Black Oxided Steel Guideplates (Comp Cams 4820-8)

Trickflow ChromeMoly Hardened Pushrods - $75
===================================
For Use with Guideplates : Yes
Tubing Diameter (in): 0.313 in.
Pushrod Material: ChromeMoly
Top Tip Style: Ball
Bottom Tip Style: Ball
Intake Overall Length (in): 7.200 in.
Exhaust Overall Length (in): 7.200 in.
One-Piece Pushrod: Yes
Oiling: Yes
Tapered: No
Tip Attachment: Formed
Top Tip Diameter: 5/16 in.
Bottom Tip Diameter: 5/16 in.
Wall Thickness (in): 0.080 in.
Heat-Treated: Yes
Quantity: 16.

These are basically new. They do not have many passes on them at all. I just do not need them with the 5.3.