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91 chevy diesel tranny 2 wheel drive

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Old 01-07-2011, 02:33 PM
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Car: 88 iroc
Engine: 350 bored .40 reman vortec heads
Transmission: 700r4
91 chevy diesel tranny 2 wheel drive

will a tranny from a 91 chevy dually 2 wheel drive work in 88 iroc. the thing is rebuilt for pulling a 5th wheel 0 miles on it the car does not have a stock motor its a carbed 350 with no lockup. the guy wants 325 and he will warranty it
Old 01-07-2011, 06:26 PM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: 91 chevy diesel tranny 2 wheel drive

Probably not. The bellhousing bolt pattern usually isn't standard Chev pattern. Most diesels use Olds/Buick/Pontiac/Caddy bolt pattern.

The other issue is the torque arm. The diesel tranny won't have the torque arm mount on the tailshaft.

If it's not a 700R4 then you have other issues like tranny crossmember, driveshaft length etc to deal with.

The 91 should be using a 4L80E which means it also needs a computer to operate the tranny.
Old 01-07-2011, 11:05 PM
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Car: `86 SS / `87 SS
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Re: 91 chevy diesel tranny 2 wheel drive

a 4L80-E is a good trans. look up s10wildside's EFI tips re: running EFI on your engine + controlling the trans. or the aftermarket 4L80-E controllers. It's probably a more complicated transmission option than you'll want though.
Old 01-07-2011, 11:36 PM
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Car: 82 S10, 83 280ZX, 84 Z28
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Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: 91 chevy diesel tranny 2 wheel drive

the 6.2L and 6.5L diesels have the standard chevy bellhousing.
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