Thread: Axle swap?
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Old 11-18-2011, 08:28 AM   #1
C15_Sierra
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Join Date: Apr 2011
Location: Hartford CT
Posts: 223
Axle swap?

Would it be possible to swap axles from a 12-bolt 2WD (5-lug) with 2.76's, into a similar-vintage 12-bolt 4WD (6 lug) housing?

Backstory: I'm in the market for putting a 3.73 posi, trying to do it cost effective (my truck's not gonna be a high performance road burner, but I still want some get up and go). 2WD's are rare around here, so 3.73 posi's are few and far between for 2WD trucks.

There's a guy locally who's selling a "early 80s" Chevy 12-bolt posi with 4.10's, but its from a K10, so its 6-lug. Would I be able to swap the axles from my 12-bolt into the other 12-bolt? The 12 bolt for sale has also been recently rebuilt, whereas mine is condition unknown (didn't make any funny noises during the 10 miles I put on it before I took it off the road for the engine swap)

Advice?
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-Steve

1980 GMC C15 Sierra LWB
Dark Carmine Red/Carmine Int
Was: 250/3spd (1980-88), then a 305/TH350 (1988-2011)
Now: 5.3/4L60E, 2.73 12-bolt open rear
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