Rear end + Tire combo fitment

Tire sizing and wheel offset.

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Rear end + Tire combo fitment

Postby 86s10blazer327 » Fri Oct 07, 2016 11:22 am

So here's my issue:

My 1986 S-10 blazer has a gm 7.5 with 4.10 gears. This rear end was fine with the smogger 305 that was in it when I purchased it, but now I'm almost done dropping a 327 that's making about 400hp at the flywheel and I'm not sure it's going to last very long (maybe it will but either way I want to swap it out). I want to swap it for a 9 inch ford and I've scrounged around local garage sales and let the word out among my family members and so far I've come up with a brand new 9 inch housing with no axles and another housing with axles but it's narrowed to 47" axle end to axle end and whomever narrowed the housing was either in a big hurry or had no idea what they were doing because it's a mess. The axles, however, seem to be in good shape so I was wondering if I could narrow the good housing and use the axles off of the mangled housing and put it under my s10 without cutting up the frame or the springs. If all of that it possible, then what is the widest wheel/tire I can fit. I was hoping to get some 15x10 rallys under but 15x8 with wide tires would also be fine (and also cheaper since I have some already)

Thanks Guys,
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Re: Rear end + Tire combo fitment

Postby Rickracer » Fri Oct 07, 2016 1:22 pm

Welcome Allen!! Check out the 8.8 axle threads in the Transmission & Drivetrain sticky, a much better and less costly option than the 9". :thumbup:
ASE Certified Master Automotive Technician (well over 3 decades of experience, :thumbup: )
'93 S10 SB,RC, Comp XR276 Hydraulic Roller, Vortec head 363, 400 + hp, built 700R4, JW 2800 stall lockup converter, 3.73 posi, disc brake, narrowed 8.8 Exploder rear, LS Camaro front discs, Cal-Trac clone traction bars, Best N/A passes to date: 7.76 in the 1/8th, 12.24@109.27 mph in the 1/4, gonna spray it one of these days... :mrgreen:
76 Chevy Vega Drag Car, TWIN TURBO 355, P/G trans w/ brake and JW 4000 stall vert, 4 link back half, narrowed 9", 3.50 gears, 29.5x10.5W ET Drags. Best time9.669 @ 139.79, Latest video: ... ata_player
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