Does color on valvespring signify anything?
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Joined: Apr 2015
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From: Minnesota
Car: 1984 Z28 HO
Engine: 5.0
Transmission: 700R4
Axle/Gears: 3.73
Does color on valvespring signify anything?
Just took my valve covers off...462624 "Hencho Mexico" heads, noticed my valve springs have a brown stripe on them. I thought I read somewhere that brown stripe signified "Z28" springs. I bought these heads as crate motor take offs and they are basically new / unused. Any ideas? I'm going to be running an XE 256 cam, not sure if I have to change springs. If I do, I can pitch the rotators and use std retainers on all 16 springs right?
Joined: Oct 2013
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From: Louisville, KY
Car: 1983 Z28
Engine: 385 Fastburn
Transmission: T-5
Axle/Gears: BorgWarner 9-bolt posi, 3.27 gears
Re: Does color on valvespring signify anything?
I've heard that, I've also read about them having orange stripes. If the heads are from Mexico I doubt the springs are true 'Z28 springs' but rather knock-offs.
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From: 51°N 114°W, 3500'
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Re: Does color on valvespring signify anything?
Color doesn't mean anything. The spring rate needs to match the camshaft recommendation. Stock springs are designed for stock camshafts unless a replacement cam is close to stock specs. The only way to know how good the springs are is to test the spring rate. They need to exert a specific pressure at a specific compressed height.
The stock springs will be fine with the XE256 cam
The stock springs will be fine with the XE256 cam
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