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Originally Posted by Simonsays
Looking for some knowledge folks. My 3/4 ton 1966 gmc pick up is getting front end rebuilt. I called eaton springs and was told the stock spring is thier ML 2022 spring which is rated for about 1018 lbs spring rate. Now when compared to the same year chevy c20 version that spring is considered heavy duty for a chevy c20. Same year in c20 the standard spring is listed as ML1766 which is listed at around 790lbs spring rate, this spring is standard for both c10 and c20.
So question, is does anyone have any knowledge of GMC using heavier duty springs as standard springs? I'm debating going with the c20 version of standard to get a more plush ride, since the standard in GMC is heavy duty version according to Eaton springs. Hopefully someone knows about this or have ran across this at some point. Thanks in advance.
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Your V6 engine (assuming that's what you have) weighs 200 to 300 pounds more than a Chevy engine. If you go with a lighter duty rated spring, you risk bottoming out the suspension on potholes, speed bumps, etc.