The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - which front and rear diffs came on my suburban and will these fit?

Jsfucttruck · 03-13-2018, 11:42 AM

In 86 your 3/4 ton 4x4 would have a 8 lug, 10 bolt front axle and a semi-float 14 bolt from the factory.

Neither one of those is going to fit if you have factory axles.

Potentially, one of those(upper one) might fit if someone swapped a 14bff rear axle in.

03-13-2018, 11:42 AM	#2
Jsfucttruck Registered User Join Date: Jul 2011 Location: Aptos Posts: 363	Re: which front and rear diffs came on my suburban and will these fit? In 86 your 3/4 ton 4x4 would have a 8 lug, 10 bolt front axle and a semi-float 14 bolt from the factory. Neither one of those is going to fit if you have factory axles. Potentially, one of those(upper one) might fit if someone swapped a 14bff rear axle in.