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Old 11-15-2014, 12:36 PM   #1
thumpernickle
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SPID Help

I am trying to understand a couple options listed on a SPID for a 1971 C20. I am listing the ones I have questions on below:

F31 (I think, hard to read) FRT 4 Rear Shock ABS

G86 No Spin Rear Axle (I assume this is a Positraction rear axle?)

Thanks for your help.
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Old 11-15-2014, 02:34 PM   #2
Bigdav160
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Re: SPID Help

G86 says your Eaton axle came with a locker
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Old 11-15-2014, 03:05 PM   #3
71swb4x4
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Re: SPID Help

F51 = front and rear shock absorbers

upgraded shocks over stock
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Old 11-15-2014, 06:57 PM   #4
thumpernickle
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Re: SPID Help

Thanks guys. That helps a lot.
Is there are generally accepted opinion regarding the upgrade shock absorbers on springs vs. leaf springs?
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