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View Full Version : 3.8 5 speed in a 91 5.0 info please


swammi
07-11-2012, 06:42 PM
i have swapped several transmissions , plus rebuilt more than that. so i am no stranger to the t5.my question is somethin i have never done.will a 3.8 v6 5 speed and bellhousing fit in a 91 lx 5.0 ,the main question is i want to use the 3.8 bellhousing cause i dont wanna change the input shaft to go with the normal 5.0 bellhousing and i dont have a 94-95 5.0 bellhousing. any help would be greatly appreciated; i believe everything is correct and i will have no issues but i didnt figure it would hurt to ask!thanks again>

jonosranger
07-11-2012, 09:04 PM
I think the starter is in a different location is what i read.

H8IMPORTS
07-11-2012, 09:19 PM
I think the bell housings are the same. Never tried it so I'm shooting in the dark. Along time ago I was told they would just swap right in but I never tried it. If it's not the same just use a 94 or 95 bell housing with the 3.8 trans.

Doc_G
07-12-2012, 12:03 AM
94-95 3.8 t5 will bolt right up. Use the sn95 bellhousing to acommodate the longer inputshaft. I believe you will need a ds spacer though.

swammi
07-12-2012, 05:15 AM
i done some more research. so i need a 94-95 v8 5.0 bellhousing.anyone have one let me know!

QWKSNKE
07-12-2012, 11:17 AM
I have a co-worker doing the same mod. What is different in the V-6 bellhousing since it bolts right up.
The V-6 uses the same size flywheel/clutch setup. So everything should work without using the sn95 bell housing, correct?

H8IMPORTS
07-12-2012, 12:49 PM
94-95 3.8 t5 will bolt right up. Use the sn95 bellhousing to acommodate the longer inputshaft. I believe you will need a ds spacer though.

I think you have to use the DS spacer when you put a fox T5 into a 94 or 95 not the other way around.

EHardy1971
07-12-2012, 01:13 PM
I have a co-worker doing the same mod. What is different in the V-6 bellhousing since it bolts right up.
The V-6 uses the same size flywheel/clutch setup. So everything should work without using the sn95 bell housing, correct?
No, the V6 uses an 11" clutch setup.

QWKSNKE
07-12-2012, 04:40 PM
No, the V6 uses an 11" clutch setup.

Ummm what year v6 car you referring to? 11" clutches didn't start until 96.

swammi
07-12-2012, 04:54 PM
all 3.8 from 95 up used 11 inch clutch with 164 tooth flywheel.you can use a truck flywheel and truck clutch setup from 87 up 2wd. so this is the way i will go!

QWKSNKE
07-12-2012, 08:12 PM
I will check with my co-worker tomorrow he must have a pre 95 3.8 setup. According to him his 3.8 clutch items measured out the same as the 10.5 setups in the fox

Not that it matters. As long as you have the flywheel/clutch kit as a matched set per se, it doesn't matter what the size is. (10.5 or 11)

Also, did you confirm the sn95 bell housing necessity? Only thing I can think of that would require this change over the v-6 bellhousing is if the actual diameter of the flywheel changes

EHardy1971
07-12-2012, 08:56 PM
Ummm what year v6 car you referring to? 11" clutches didn't start until 96.

all 3.8 from 95 up used 11 inch clutch with 164 tooth flywheel.you can use a truck flywheel and truck clutch setup from 87 up 2wd. so this is the way i will go!
^What he said
I will check with my co-worker tomorrow he must have a pre 95 3.8 setup. According to him his 3.8 clutch items measured out the same as the 10.5 setups in the fox

Not that it matters. As long as you have the flywheel/clutch kit as a matched set per se, it doesn't matter what the size is. (10.5 or 11)

Also, did you confirm the sn95 bell housing necessity? Only thing I can think of that would require this change over the v-6 bellhousing is if the actual diameter of the flywheel changes

I don't think the overall diameter of the flywheel is different, but IIRC, the imbalance is a different weight on the 3.8 than it is on a 5.0.

QWKSNKE
07-12-2012, 09:06 PM
^What he said


I don't think the overall diameter of the flywheel is different, but IIRC, the imbalance is a different weight on the 3.8 than it is on a 5.0.

Yeah I knew the balance was different. So with all being said....

You can run a 3.8 t-5 and bell housing with a normal fox flywheel and clutch. That is what I read in all of these posts. No need in a truck clutch or sn95 bell housing

swammi
07-13-2012, 05:22 AM
i have checked the mid plate off a fox the 157 toothe its to small ,a 164 toothe midplate from an aod fits fine.with this being said you must use a 16 toothe flywheel unless you want to push start it.cause the starter won't touch the flywheel its an 1/2 inch off.

QWKSNKE
07-13-2012, 07:29 AM
i have checked the mid plate off a fox the 157 toothe its to small ,a 164 toothe midplate from an aod fits fine.with this being said you must use a 16 toothe flywheel unless you want to push start it.cause the starter won't touch the flywheel its an 1/2 inch off.

midplate = flywheel?

So there is an actual diameter difference between the 3.8 flywheel and the 5.0 fox flywheel? That is what I was unsure about. If that is confirmed and true then I can see the reasoning behind needing to run a different bellhousing

Forwarding this thread to my co-worker. Thanks Swammi :nice:

EHardy1971
07-13-2012, 08:14 AM
I think he's talking about the block plate.

swammi
07-13-2012, 08:58 AM
Correct a 3.8 uses. A 164 toothe flywheel and a 5.0 uses a 157 toothe thanks everyone for the input.

QWKSNKE
07-13-2012, 11:30 AM
I think he's talking about the block plate.

LOL. Block plates don't have teeth

EHardy1971
07-17-2012, 11:21 AM
LOL. Block plates don't have teeth
:lol: I know. When he said too small, he may have been referring to the thickness, or the hole in the center. That's the only thing that would make sense.