[trashman]

Tried searching to no avail, but will wheels off a 1991 k1500 fit our trucks or have a issue with backspace?

 

[08Canyon]

They will not fit. Our trucks have a unique center bore that is larger than that of most, including all GM vehicles. The bore diameter is like 102mm I think.

I don't know if the bolt pattern is the same on a 1991. But aside from that, the center bore won't allow it to fit anyway.

 

[trashman]

I was figuring that it would need a bore job, but if ur saying that 6 bolt pattern is different then thanks

 

[08Canyon]

I do not know if the bolt pattern is different.

I don't even remember what ours are. I think the bolt pattern is 6x137. But don't hold me to that. Somebody with knowledge of the full sized '91 series axles can confirm/deny the bolt pattern for you.

And since you are willing (and know about it) to get the wheels bored then no worries about that part.

Also, I don't have a clue about the offset in those model years either. What size tire do you plan to install, and what truck (specifics) are you fitting them on?

 

[GregDAP]

Bolt pattern should be fine but they will need to be bored to 100.3 mm.

Our bolt pattern is 6x139.7 (6x5.5 inches)

 

[GregDAP]

Offset should be stamped on the wheels. If they are the 15 inch ones they will not fit 2009+ models

 

[08Canyon]

Bolt pattern should be fine but they will need to be bored to 100.3 mm.

Our bolt pattern is 6x139.7 (6x5.5 inches)

Thanks for that. The 137 sounded wrong but nothing else sounded right either.

 

[trashman]

Thanks guys, they are going to go on my 2005 z71 4x4

 

[gway]

They'll fit with a bore. All Chevy 6 lug trucks are pretty much the same. I have a mid 90s 14 bolt and a mid 70s dana axle with rims for a colorado.

 

[trashman]

Thanks gway, every time I see ur truck I want to order a bunch of parts, then the wife reminds I need to finish the basement off lol

 

[gway]

Just lock the basement door haha