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Tech_Ed88 · 03-11-2010, 11:29 PM

Well, I found the RPO codes..... IT does have 3.08's

I guess the search is on...

I found an 89 1500 12bolt GM with 3.73 gears complete with brakes and lines. I need a brake job anyway......

Is the 88-9? a direct swap or swap with minor mods?
should I stick with the 73-87.....
Thinking that the bolt pattern is the same...
Shock mounts?
leaf mounts?
drive shaft u joints?

03-11-2010, 11:29 PM	#25
Tech_Ed88 Registered User Join Date: Apr 2009 Location: Uniontown, PA Posts: 41	Re: Decisions on how to proceed on 87 GMC Well, I found the RPO codes..... IT does have 3.08's I guess the search is on... I found an 89 1500 12bolt GM with 3.73 gears complete with brakes and lines. I need a brake job anyway...... Is the 88-9? a direct swap or swap with minor mods? should I stick with the 73-87..... Thinking that the bolt pattern is the same... Shock mounts? leaf mounts? drive shaft u joints? Last edited by Tech_Ed88; 03-11-2010 at 11:33 PM.