LUVTruck.com

I have an 82 chevy luv 4x4 diesel with 4 speed and 4:10 gears. Is it possible to swap the differential with higher gear ratio from the chevy S-10?

If you have some fab skills, and a measuring tape, then yes...

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If you think no one cares, try missing a couple of payments...



FIAA!

SFPP!

Thanks thats a big help.

HHTS

FTEEA

"Possible" does not mean easy, cheap, or worthwhile.

Is there even an S-10 gear option that is better? (that is available for the FRONT diff)?

Jack

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

Thanks Jack, just looking into possibilities. With a 4 speed and 4:10 rear end my top speed is still 50-55MPH.

Wow, it should go 65+, maybe even 75 (max, not cruise). Rather than re-gearing, I'd be trying to diagnose the performance problem. My 2wd (3.73 rear end) would hit about 90 mph before I upgraded the transmission. I now have a higher 5th gear, and I don't know the top speed...and I don't plan to find out.

Jack

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

If you can put me in touch with someone with a 82 4x4 diesel that dosent have this issue from a stock truck I will gladly send you a big payday! I checked both front and back differentials a 4:10, the trannie runs smooth a 4 speed, the engine dosent smoke and has great power. The only thing left would be someone changed the trannie, but that dosent make sense. Again this isn't the first one, I have had 3 others(2 wd) with the 5 speed and I to could get it up to 80(down hill). I am at a loss on what to do. Be patiant I guess.

Bruce

I gave you a general answer, based upon a vague question. You did not ask if the width was the same, if the spring perches were in the same spot, etc. I don't believe many of the board members here are psychic...

_________________
If you think no one cares, try missing a couple of payments...



FIAA!

SFPP!

Sorry, I
Oops. I think 75 would be a fantasy, I forgot you said 4-speed AND 4.10. The '86-'87 P'ups had 5-speeds, and they should do 75...and 65 is more typical for the 4-speeds. But 50 isn't right.

I went several years with a problem on mine that affected the highway performance. It seemed fine in stop-and-go driving, but it didn't want to go 65 on the highway. Considering it's 2wd and 5-speed, that's really bad. I tried several things to diagnose it for a few years (I even dropped the fuel tank and inspected it for debris). Finally, on the advice of someone on the IsuzuPup.com forum, I removed the Cold Start Device. This is designed to advance the injection timing for cold starts. I was skeptical, but I'd tried everything else. After I removed it, the truck drove like new. My fuel economy went up significantly, too.

Jack

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

Sounds like my problem, so how do you remove the cold start device and where is it?

Bruce

It's on the passenger's side of the pump. It has a steel fuel line that goes to a fitting on the back of the pump. You can either remove completely, or "gut" it so that it's inop. Either way, you MUST block off that fuel line. I won't rehash the theory or the details here, but there's a LOT about it HERE, from a forum member who works at an injection shop.

Jack

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

Thanks a great deal Jack, It gives you something to ponder. You have been alot of help.

It looks like it is going to be a labor of LUV.


Bruce