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c104life · 10-14-2015, 03:51 PM

I have an 71 c10 swb step side with 307 4 speed, my spid says positraction rear A. Looked on the rear end the only thing i could find was NF3896838 could someone tell me what type of gears do i have?

10-14-2015, 03:51 PM	#38
c104life Registered User Join Date: Apr 2014 Location: new orleans, louisianna Posts: 73	Re: Rear Axle Codes I have an 71 c10 swb step side with 307 4 speed, my spid says positraction rear A. Looked on the rear end the only thing i could find was NF3896838 could someone tell me what type of gears do i have?