Axle question

[Muddytazz]

Ok, I just picked up this 88 K5 all stock rust free rig (traded it straight across for my old 89 S10 extended cab pickup). Anyways, is/was there any other place besides the glovebox for the rpo code list? There isn't a sticker in there(there is only 1 sticker that says your not suppose to use a slide in camper on this rig type of thing) but no rpo code sticker.

Oh, and before you ask, here are the pics RIGHT HERE

 

[4X4HIGH]

The glovebox was the most common place and sometimes you can find a build sheet with all the RPO codes under the seat between the cushion and the springs of the seat. I've seen them on top of the gas tank as well, sometimes under the carpet.

 

[Muddytazz]

Oh joy. Well does anyone know what the common gear ratios were for 1988 stock 10bolts?

Oh, 350/700r4/tcase don't know yet, haven't looked.

 

[1-tonmudder]

I pulled a set of 10 bolt's out of a 88 with that same combo and they were 3:42's.The case was a 208.

 

[4X4HIGH]

Most common for a 350/700R4 is 3.73's and the T-case is a 208 (assuming it's stock).

 

[RockinChevy]

Weird how mine came with 3.07's on 33s when I bought it. Dang the sucker had slow takeoffs at the lights but gets awesome mileage on the freeway.

 

[4X4HIGH]

I'm pretty sure GM never put 33's on a blazer in stock form ever.

 

[RockinChevy]

yeah prolly had 31's