LUVTruck.com

There's no mention of transmission gear ratios in this thread.

Has anyone got a gear ratio chart, comparing the LUV 4-speed to the Pup 5-speed?

Also, a little Off-Topic, but since the subject has come up in this thread...do the Isuzu "Z" series engines interchange with the "G" series engines...in terms of the motor mounts? will a 2.3 or 2.6 bolt into my '75 LUV?

so you can literally swap parts from an GM which is the equivalent of any Isuzu? All but rebadge Chevy from Isuzu itself.

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"love your luv truck"

Have a question about all the 5-speed swapping. I have a 79 longbed with stock 1.8 4-speed setup. Also have a 5-speed from an 88 or 89 P'up that was a 2.3, so the cable setup was the same. The input shaft has more splines than the LUV 4-speed. Is there a clutch kit I can buy to make this work, or do I need an older 5-speed?

Will the stock speedo work with the 5 speed from the 4 speed or do I need to calibrate it

No. Yes. That all depends on what the 5-speed came from, and what you're driving.

Jack

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

Used my gps on the phone and the speedo is dead on thanks still looking for a new to me for a speedo 76 luv oval style

From what I read here so far the easiest drivetrain swap for a 76 LUV would be anything before 87?

If I had an 89 Pickup would I be able to transplant the entire drive train? (My 76 has a seized engine and the tranny was close to dead too)

Can I use the 89 Pickup 4 cyl. engine with the same motor mounts already in my 76 LUV?

I understand the Pickup drive line will have to be shortened since it's coming out of a long bed PUP and my LUV is short bed.

Then I would use the LUV's rear leaves for the Pickup rear axle?

Would I also need to take the Pickup's master cylinder?

IF you had one, you'd have the ONLY one. There were no PUPs after '87.

Jack

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

Right, 89 Pickup, let me edit that lol.

i have seen a chart, will look for it again but the 1-4th are the same and the 5th is .855 so 14.5% overdrive

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1980 Mikado (roller for sale $350)

1999 Isuzu Rodeo 4x4, 31" kumho mt's, the wife's DD
1993 Lexus SC400 my DD
2005 Honda CRF450R my second love in life

Gas
1ST 3.431
2ND 1.969
3RD 1.364
4TH 1.000
5TH .855

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1980 Mikado (roller for sale $350)

1999 Isuzu Rodeo 4x4, 31" kumho mt's, the wife's DD
1993 Lexus SC400 my DD
2005 Honda CRF450R my second love in life

Here's some more, from that thread...
I _believe_ the column labeled as "Gas" refers to the transmissions AFTER 1986, but I'm not certain. I do know that there were MAJOR changes in the '86 and later MSG-5 transmissions including a different countershaft ratio, which would affect 1st, 2nd, 3rd, and 5th gear ratios. If someone needs it, I can look at my shop manual and see what it says for the 1983 gas and diesel P'up, and it should be the same for all 1981-1985 transmissions. But I always try to discourage people from using the 1981-1985 transmissions because they were pretty failure-prone. That's why they were modified in 1986. The '86-up transmission is much stronger.

Jack

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

does somebody have for sale a slip front joke for a isuzu 86 i just need this part to make my truck run if someone have it please call me 707 376 5450 thanks

Yup.

Just posted this a few days ago...
viewtopic.php?f=8&t=27246&p=198823#p198823

Jack

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

Shipped this out Tuesday night, and he's driving it today!

Jack

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

hi i am new to this forum, i have an 83 chevy s10 with the isuzu 1.9 gas engine and am looking to convert from four to five speed trans. i have been told any isuzu 5 speed will work however am not sure i want to use a newer five speed from possibly an hombre or another s10 that has the newer 2.2 gas engine as i have been told that gm rebranded it as theirs yet it is actually an isuzu engine (hear say not fact) i love my trucks gas milege however it is a bit gearbound at highway speed and would like to have that fifth gear.. being you guys were talking about isuzu i figured you may have some useful info that could help me or maybe know where to get it...any info would be greatly appreciated...thanks...tom

Tom,

Someone here may already know, but I don't. So let's figure out what transmission is in your truck now. I know the diesels had a Borg Warner transmission that was the same as other Chevy/GM vehicles. If yours has that, forget the Isuzu transmissions and get a T-5. If it has the Isuzu transmission, it will have at least an Isuzu logo somewhere on the housing. Can you check?

Jack

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