LUVTruck.com

hello... just wondering if anyone knows what gear ratio came in the back differential on a 85 isuzu pup?? 2 wheel drive with the 5 speed manual... any input from u guys would be great.. thanx... trying to swap the third member into my 74 chevy luv..... thanx again...

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74 LUV With Ford 2.3 Turbo Motor with a T-5 and 3.42 gears out of 85 pup.

4x2 pups 1981 to 1987 had 3.42 3.73 and 4.11s
only the auto trans has the 4.11s
only the MPG+ model has the 3.42s all are 4 speed (unless it was sold in CA state). there a 5 speed. olso i think there all short beds.
it whould say MPG+ on the cab behind the doors at the top of the bed.

all others are the most commen 3.73 and 5 speed.

this is for diesels, there may be a odd ball gas pot gearing that i dont know about. but i know theres none more agresseve than 4.11

the 3.73 is a good mach for the gas engine and not gitting a way steep 1st and reverse.
the 3.42 is real steep if moving cargo. or DD big hills

all 4x4 pups are 4.11s, unless for some odd reson 4.55s from a 84/86 trooper where put in it.

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86trooperT/D 2.2
84 L\B 4x4Diesel LS 2.2
84 S\B 4X4 gas rust bucket 1.9
86 L\B 4X4 gas 5 speed 2.3
the twins, 81 pup and 81 LUV both are diesel 2.2



The Energizer Bunny is trying to keep up, and is starting to gasp for air!!

Guess that lotta people are doing this. I did it, best mod I've done so far. I have 3.73s from a 83 Pup, was a bolt in swap I did in my garage on jack stands with hand tools. Heads up, for 3.73 I think you will have to take out two of the 3rd member mounting studs and replace them with long bolts. Not a big issue, and fortunately it's not a blind hole. It was two 90 mm bolts I used, I believe.

I think the 5-speed gassers were 4.11. I'll see if I can confirm.

Jack

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'83 Isuzu P'up Diesel LS - Original Owner
JoeIsuzu@IsuzuPup.com
IsuzuPup.com

I dont know where your info comes from.
I got a 4.11 in mine and its a pig to back a loaded car trailer.


The Isuzu manuals i have state, 1000kg rated have 4.555 ratio. 500kg rated have 4.11 ratio. 4 speed or 5 speed it makes no difference. 1.6L 1.8L 2L 2.3L petrol and the C190 C223 C223T

We did not get automatics so i do not have any info on that but i would suspect the 3.7 or there abouts. Maybe the 3.4 was for a lower GVM rated auto.

You could get the center from an Isuzu impulse with a 5 link rear end (turbo or 2.3L), they were 3.9 and if its a manual car it should be an LSD.

Cheers, Bob.

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Current project, 1979 KB Isuzu Ute.

Daily driver, '86 Rodeo Spacecab.
Chasing parts for Isuzu Impulse.

sorry should of stated

my info is for USA spec 81/87 isuzu pups only, not any Australia spec autos

no 81\87 pup had 4.55 gears at all, though the 84/86 isuzu troopers have the same axils and the 4.55 in them, they can be put in a pup if needed

we do have a small number of Isuzu impulse with the LSD but i dont know if its 3.90~to1 no pup or trooper had a LSD with a 10 bolt rear
after re-reading it, it looks like im saying these are world wide standerds


i hope this clears things up

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86trooperT/D 2.2
84 L\B 4x4Diesel LS 2.2
84 S\B 4X4 gas rust bucket 1.9
86 L\B 4X4 gas 5 speed 2.3
the twins, 81 pup and 81 LUV both are diesel 2.2



The Energizer Bunny is trying to keep up, and is starting to gasp for air!!