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Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Impex, Feb 27, 2001.
Would regular 80-90w lube work?
Im pretty sure thats what you need.
Will work for beer, parts and tools.
90 Jimmy 350TBI-700R4-241-33" BFGs-10 bolts w/4.10's
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Yes, 80-90 is all you need. I installed one of these in an 86 short bed with 10B rear and the LR uses NO clutches. Its just a replacement gear set. No posi-lubes here or anything fancy. Just straight gear oil.
The LR manual recommends 80-14?W, and from experince a lube like Moroso Gear climbing, helps muffle the
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