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3.4 5 spd, on 3rd gen 3.1


94cutlatized

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hello people i'm new here, i have a 94 cutlass supreme with the stock 4 spd hydra.. I am customizing my car and i would really want a 5 spd on it, so that its truly cutlatized, my question is, Is there an exact fitting manual transmission form a type of 3.1, or is the only option is the 3.4 twin cam tranny, the early 5 spd? is there any custom mount for this operation, or will a new custom plate be needed? i would really apreciate, the info, thank you.

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The bellhousings are the same. You can use the 5spd tranny out of any w-body vehicle with no problem.

 

Mounts, yes, you will have to make your own mounts.

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Guest TurboSedan
The bellhousings are the same. You can use the 5spd tranny out of any w-body vehicle with no problem.

 

Mounts, yes, you will have to make your own mounts.

 

any 5-speed from a W-body will work except those from the HO Quad-4 equipt cars. and even that transmission will work, but you would need to swap the Quad-4 bellhousing out in favor of the V6 bellhousing. the transmission you want is either the Getrag 282 or the Getrag 284. i would go for the 282. Getrag 282s can be found in 2.8/3.1 and HO Quad-4 equipt '88-'90 W-bodies (avoid the Quad-4 282 unless you have a V6 bellhousing ready to go on it). the 284 can only be found in '91-'93 3.4 DOHC equipt W-bodies. 282s are easier to find, and parts are readily available for them unlike the 284. the 284 is stronger though.

 

no custom mount needed; just buy a new one.

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The bellhousings are the same. You can use the 5spd tranny out of any w-body vehicle with no problem.

 

Mounts, yes, you will have to make your own mounts.

 

no custom mount needed; just buy a new one.

 

I assumed this since he has a 94 that the mounts may be different.

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how about clutch and all of that, that will fit in the the engines torque converter? or will it use the 282's torque converter? and what stick system to use? the same from the 282? will the pedal fit right in? jaja maybe im asking for too much, but i really want this car one of the kind. thank u guys

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a manual has no torque conveter....

 

everything is bolt on from a 282, theres a plate behind the firewall (gotta pop the dash out) that got 2 be changed, but eveything else is a bolt in, best off to have a donor car to do the swap

 

use the search function, its been done a few times

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Guest TurboSedan

theres a plate behind the firewall (gotta pop the dash out) that got 2 be changed

 

while that is the "right way" of doing it, i simply spent about 2 minutes with a Dremel and modified mine. clutch master cylinder fits in perfectly and pedal feel is great. i have never had any problems, and i've put about 70,000 miles on the car since i did the swap back in 2001.

 

the 5-speed swap really is a bolt in ordeal, except for drilling the hole for the shifter cables.

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I thought it wasn't really for '94+s? Because of firewall/floorpan/dash/pedal changes? Maybe it was '95+ when they got the full new dash..

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Guest TurboSedan

good question, i'm not really sure about the '94 model Cutlass Supremes. i know it's alot more difficult to swap a 5-speed into the '94+ Grand Prixs (for the reasons you listed), but as far as i know the '94 Cutlass still had the older style dash.

 

anyone know for sure?

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good question, i'm not really sure about the '94 model Cutlass Supremes. i know it's alot more difficult to swap a 5-speed into the '94+ Grand Prixs (for the reasons you listed), but as far as i know the '94 Cutlass still had the older style dash.

 

anyone know for sure?

 

I heard that swapping a 5spd into the 3100 in a 94 wasn't possible. I think it may be because of the bellhousing or something else. I don't remember, but I also know that the OBD 1.5 found in the '94 Cuttys is a problem for a lot of things people would want to swap. I'm not an expert, but this is just coming from memory at the moment...you're definately going to want to talk to josh.

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Theres many people running 3400/5speeds on a 3.1 ECU(I think thats how they have it set up). Hell, theres even a few people running that combo on the 3100 ECU.

 

The bellhousings are the same. Thats no problem.

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Theres many people running 3400/5speeds on a 3.1 ECU(I think thats how they have it set up). Hell, theres even a few people running that combo on the 3100 ECU.

 

The bellhousings are the same. Thats no problem.

 

Now that's the first time I've heard that. I don't know of anyone here with that setup. Correct me if I'm wrong...

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Theres many people running 3400/5speeds on a 3.1 ECU(I think thats how they have it set up). Hell, theres even a few people running that combo on the 3100 ECU.

 

The bellhousings are the same. Thats no problem.

 

Now that's the first time I've heard that. I don't know of anyone here with that setup. Correct me if I'm wrong...

 

On here, no, because no one on here is willing to spend a few bucks (also, these swaps were done for less than $1000).

 

Patgizz was the closest, but he had issues with his running correctly. He had a 3400/5speed on a 3.1 harness and ecu.

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Unless you really know what you are doing you might be in over your head. It's something I wouldn't want to try, unless I had a donor car and didn't plan on driving the project car for some time, and tools/room to do this of course.

 

The cost of just rebuilding the stock trans alone is insane, any tranny shop would probably charge well over $2000 to do manual trans swap.

 

As mentioned.. 1994s never came with manual trannies, nor did any 3100 engine. You'd possibly need to custom fab for some stuff to fit. And then there's the computer issue...

 

 

IMO... not worth it. Find a slightly older Cutty that already has a 5-speed in it.

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its me the one with the 94, cutty, well i have the older dash, the new rounder dash was in 95, also i have a 4t60e transmission, and u guys that made the swap had 4t60 trannys, how about the ecu? the tranny is electronic on 94's, so putting in a non electronic tranny, would not make the car run? is this true, or does it not matter, if the tranny is electronic?

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Guest TurboSedan

it's a bar that runs across the underside of the dash that prevents you from installing the clutch pedal without cutting and modification. i don't know much about it myself. but....does the '94 Cutlass really have this bar? if it has the older style dash i would assume it doesn't? just a guess.

 

the clutch pedal mounting 'hanger' was already there on my car. can someone with a '94 Cutlass check to see if it is there?

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we'll just came in from outside, and no, the car doesnt have any bar. i guess it started in 95 with the new dash. Anyways i spoke to the transmission guy earlier, he asked me if i was joking, i said no, i told him to tell me how much for the swap, he gave me an estimate of $700 he then asked me that, about the electronic transmission, and that he was going to figure out if it was possible on that car with some other guy in mexico, reynosa, by the way. I'll chek if it has the mounting hanger u talk about, tomorrow tho. but the bar is not there.

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