LUVTruck.com

I recently picked up a 5 speed trans for my '78 out of a '90 I think pup but I know its a 1990 for sure. My 78 is a auto and I'm installing a hydro clutch setup with the 5 speed. I grabbed the flywheel,shifter and the rear yoke, but I forgot to get the spacer that goes in between the trans and the engine. Can I just get one off of a 4-speed luv or do I have to go back and pick it up? Or will the auto spacer work if it has one? Also what are the gear ratios for this particular transmission? Lol I got a lot of questions huh?

_________________
1975 V8 Luv
1980 Bagged Luv

well if its from a 90 then it would be off a 4z motor. im not sure if those work on the old gxxx motor.

_________________
"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

I hope it bolts up without too many problems. I'll find out once I get the motor out of the '78. I plan to go back to the junkyard tommorow to get that spacer just to be sure it will work.

_________________
1975 V8 Luv
1980 Bagged Luv

90 model 2.6L?????

The box will bolt to the motor they are the same bellhousing pattern.


The flywheel wont bolt to the motor. You need one off a G-series motor. The one off a G200 is best as its set up to take a bigger clutch than a G161 or G180. This will be a different clutch than the one off a 2.6L motor but should be the same if its off a 2.3L motor.

The rear yolk should be the same spline as the auto trans was, but the tailshaft length will be wrong.


I dont get what this spacer is that you are talking about?? You dont mean the bellhousing do you??? Or do yo mean the sandwich plate thats bolted to the back of the block???

If the bellhousing bolts off the box its a T5. If the box and bellhousing is an intergrated casting its an isuzu MUA box, both are on about par for strength.

For the Isuzu gearbox the ratios are posted up here http://www.isuzupiazza.com/forum/viewtopic.php?t=688 Have a read theres lots of info in there.

_________________
Current project, 1979 KB Isuzu Ute.

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

Yes Im talking about the sandwich plate that bolts to the back of the engine. I went back to the junkyard and picked it up. Thanks for your help!

_________________
1975 V8 Luv
1980 Bagged Luv

I looked at a flywheel from a G200 and the bolt pattern is the same as the 2.6 8 holes. The G180 has a 6 hole bolt pattern so I dont know which flywheel I need for this swap. Will the Luv clutch's disk work with this five speed?

_________________
1975 V8 Luv
1980 Bagged Luv

huh?? i could have swore that 800xl told me that the Gxxx and 4z flywheels werent interchangeable. are you talkin about the pressure plate? i dont know whats going on...

_________________
"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

I'm trying to figure out which flywheel I need for this swap. Im starting to think that the 5-speed tranny I have wont work with the G180.

_________________
1975 V8 Luv
1980 Bagged Luv

well i think itll work as long as you get the right clutch for the 5 speed. i know that the g200 came with a 5 speed in the later 80s pups. im pretty sure that youll need a 24spline clutch with a 1in input shaft.

ill look it up on summit real quick...

_________________
"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

mkay, from what i learned from summit, you need to get a clutch from a 2.3. the part numbers from the g200 clutch and the 2.3 are the same. i think its like an 8.6inch clutch with 24 splines and a 1 inch input shaft.

so just go get a clutch for an 87 pup with a manual. the 4 and 5 speed had the same clutch.

_________________
"but its that gut feeling of you're drawn to what feels right for yourself and what you're passionate about..."

Cool! Thanks

_________________
1975 V8 Luv
1980 Bagged Luv

You will be way happier with the 5 speed vs. the automatic...that is for darn sure!

Most Luv's with an automatic trans are just gutless...unless you build a serious G180/G200 hybrid engine to haul it around....and any 5 speed with a hybrid engine would still whoop it easily in a fair race.

I have no idea why they used a stock G180 with the type of auto trans that Luv's have...it ended up sticking the poor customers with a pretty gutless truck....and the old completely stock trucks with the 4speeds were already pretty slow compared to what else was available at the time.

Chevy and Isuzu really screwed up huge that time.

Joe put a 5 speed in his truck, and he took me for a ride the other day and it hauled ass pretty good, but hell he didn't even need to hit fifth. It just kept going and going and going in 4th!

Yeah..the guy that bought my old early 80's longbed wants to put a 5 speed in his instead of the 4 speed it has now...but it already has a rear-end with real tall gears out of a Luv with an automatic transmission that I installed when I had it and really has no problem on the freeway with keeping up.

If your buddy has that particular rear-end and put in a 5 speed too - he will really have a nice high speed truck...and he shouldn't have too much trouble off the line either if his 5 speed is like mine that I got out of an '86 Isuzu longbed...because it should have low enough 1st and 2nd gears to get out of the gate quick enough.

I also used the rear-end out of the '86 longbed in my shortbed step side with the 5 speed because I had it, (my truck came stock with the low geared rear end and I didn't want to have a low top-end speed on the freeway and use too much gas so I decided to junk it), and it was a pretty easy swap.

Now all your buddy needs is a potent little de-smogged G180/G200 hybrid motor...with a Weber 32/36, Offy intake, Delta cam, Pacesetter header, 2 1/2 inch exhaust with dual Flowmasters, Accel coil, electronic ignition module and distibutor, milled G180 head with an Impulse G200 block using the G180 crank and rods with the Impulse G200 pistons attached....and then the truck will be like Chevy and Isuzu should have built it in the first darn place.

Then he can go out and have fun embarrassing some lame fart-can Honda's with big ugly wings on the back, have a truck that really hauls butt for a four-banger, and still get pretty darn good gas mileage.

IMHO..if Chevy and Isusu would have just used some old-fashioned common sense, utilized what parts were available to them, offered a production shortbed stepside model and a few serious performance options, they would have really had a way better truck to sell.

You get it all sorted yet Dan?????


I was looking at the sandwich plates and the one on the 1.6L in my luv looks a lot thicker than the ones on the 2.3L and 2.6L motors ive got here. You might want to grab one from something else or your auto one might work.

You might run into a bit of drama with adjusting the clutch if the length isnt right.


If your box is out of a 90 model im also tipping that your going to have to convert the truck to hydraulic clutch actuation. Theres no spot in the bellhousing for the cable piviot ball to go in the later box, well not down here in RH drive land.

Bob.

_________________
Current project, 1979 KB Isuzu Ute.

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

Thanks guys! I think Im on the right track now.

_________________
1975 V8 Luv
1980 Bagged Luv

Great...I can't wait to see the finished results on the road!