[kool]

For my 71 Chevelle 454, I was going to order a set of Moog 5372 springs but then I noticed that there were other Moog springs that fit my application like 5374 and 5536. So, what's the difference in the springs? Is it just the spring-rate?

 

[NickeyChevelle]

For my 71 Chevelle 454, I was going to order a set of Moog 5372 springs but then I noticed that there were other Moog springs that fit my application like 5374 and 5536. So, what's the difference in the springs? Is it just the spring-rate?

Spring Rate: yes, but typically "Install(ed) Height" differs also. Additionally "Load" Rate can differ, as can "Bar Diameter." Go online and open a tab for each spring (search "Moog 5372", "Moog 5374", etc.). By switching between the tabs/springs you can compare them.

 

[Robinls5]

Most coil springs are the same height. It is the Diameter of the wire the coil is made from. The larger Dia. wire the stiffer the spring. You find a lot of different spring rates, A lot depends on the front or rear weight depending on factory Accs.--- A/C--P.S.--P.D.B.--H. D. cooling--Etc.
Bottom line,,, All 70s had the same ride height ( or real close).
A loaded LS-5 SS with every option availble had a real close ride height to a Malibu Cp. with a 3 speed and a 6 Cyl and no options.
Bob

 

[Ken Hayes]

Check this out. http://www.classiccarsprings.com/coil-spring-specifications.html

 

[dell72]

I have 5372's in my 71. iron headed BBC with power steering and a optima battery. With a 215/70/15 tire, the wheel well opening is about 3/4 of an inch lower than the top of the tire. Hope this helps.