4cyl. T-5 transmission **HELP**

crazyhumpyd · 04-24-2002, 02:34 AM

I have a 2.3L in my Mustang LX Coupe and I plan to rebuild and drop in a 302 Street Performance engine. I have a 4cyl. T-5 transmission and I was wondering if there was any way that I could keep that tranny with the 302. I have heard different stories about the 4cyl. T-5 and am confused now. I heard that you can buy a new input shaft and throw-out bearing to replace the old and too long 4cyl. input shaft and too small throw-out bearing. Any information would be greatly appreciated.

wildneg · 04-24-2002, 06:31 AM

My buddies uncle works for a transmission shop. I brought this same question to him (He has rebuilt 1 T5 for me and a AODE). He said it could be done but if you put any power through that transmission it would ruin it very quick. He said it really isn't worth the hassel of converting it over to work with a 302. I never did go through with it. I ended up finding a T-5 and had that rebuilt from a guy. But from what he said, the shaft I Know for sure was to long I think. And that was one of the things he would have to fix in order to get it to fit. Not sure about what else.
If you do go for it, let me know how it goes. I can get 4cyl T-5s all over the place. If its cheap to rig up and it handles power nicely, then might be the way to go. But I heard from a few people about it breaking very easily with just a stock 302's power.

-- Kevin P
-- kevin@techsi.net

Conman · 04-24-2002, 10:27 AM

I have read and heard that the torque capacity of the 4 cyl T-5 is much lower than the 5.0
it can work but don't expect it to hold up if you drive it like it's meant to be driven.
I'd do it right the first time and not worry about it

crazyhumpyd · 04-24-2002, 07:32 PM

Thanks for the information!!!!

sn95gt19 · 04-24-2002, 10:33 PM

i guess the only difference with the transmission is the input shaft size, you can use the same trans, but your gonna have to fabricate a pilot bearing for it, i know someone that actually made a spacer shim type thing and used the same trans without changing the input shaft, it sounds like more of a hassle than its worth to me, i would just get a built aod, with a stall and a shift kit, or just get a trans from a junkyard out of a 5.0

Unit 5302 · 04-24-2002, 10:57 PM

Actually, the gears, bearings, syncros, and input shaft are all different between the 85+ Mustang 5.0 T-5 and the 4 popper model. The top 4cyl T-5's were rated at 240lb/ft, and the weakest 5.0 T-5's were rated at 265lb/ft.

A 1990+ T-5 would have upgraded gears and a 305lb/ft torque rating. That's what I would be looking for if I were you.

RoadWarrior · 04-27-2002, 10:08 PM

A 4 cyl T5 will work without any mods. I have one behind my engine and my engine was dynoed at 353hp and 364 lb ft. I know its a weak tranny but im making due with it till i can find a good T5. And i beat on it pretty hard and it hasnt kicked the can yet. But the key word is yet.

04-24-2002, 02:34 AM	#1
crazyhumpyd Registered Member Join Date: Apr 2002 Location: Reno, NV Posts: 2	4cyl. T-5 transmission HELP I have a 2.3L in my Mustang LX Coupe and I plan to rebuild and drop in a 302 Street Performance engine. I have a 4cyl. T-5 transmission and I was wondering if there was any way that I could keep that tranny with the 302. I have heard different stories about the 4cyl. T-5 and am confused now. I heard that you can buy a new input shaft and throw-out bearing to replace the old and too long 4cyl. input shaft and too small throw-out bearing. Any information would be greatly appreciated.

04-24-2002, 10:27 AM	#3
Conman Registered Member Join Date: Apr 2002 Location: Kingston, Ontario Posts: 351	I have read and heard that the torque capacity of the 4 cyl T-5 is much lower than the 5.0 it can work but don't expect it to hold up if you drive it like it's meant to be driven. I'd do it right the first time and not worry about it __________________ '88 lx, Black on Black, check it out here Spent all my money on school, what a dumb mistake I'm old enough to know better, but still too young to care.

04-27-2002, 10:08 PM	#7
RoadWarrior Registered Member Join Date: Apr 2000 Location: Edmonton,Alberta,Canada Posts: 317	A 4 cyl T5 will work without any mods. I have one behind my engine and my engine was dynoed at 353hp and 364 lb ft. I know its a weak tranny but im making due with it till i can find a good T5. And i beat on it pretty hard and it hasnt kicked the can yet. But the key word is yet. __________________ Fast Company

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04-24-2002, 06:31 AM	#2
wildneg Registered Member Join Date: Jan 2002 Location: Crete, IL Posts: 19	My buddies uncle works for a transmission shop. I brought this same question to him (He has rebuilt 1 T5 for me and a AODE). He said it could be done but if you put any power through that transmission it would ruin it very quick. He said it really isn't worth the hassel of converting it over to work with a 302. I never did go through with it. I ended up finding a T-5 and had that rebuilt from a guy. But from what he said, the shaft I Know for sure was to long I think. And that was one of the things he would have to fix in order to get it to fit. Not sure about what else. If you do go for it, let me know how it goes. I can get 4cyl T-5s all over the place. If its cheap to rig up and it handles power nicely, then might be the way to go. But I heard from a few people about it breaking very easily with just a stock 302's power. -- Kevin P -- kevin@techsi.net

04-24-2002, 07:32 PM	#4
crazyhumpyd Registered Member Join Date: Apr 2002 Location: Reno, NV Posts: 2	Thanks for the information!!!!

04-24-2002, 10:33 PM	#5
sn95gt19 motors done......woohooo Join Date: Mar 2002 Posts: 799	i guess the only difference with the transmission is the input shaft size, you can use the same trans, but your gonna have to fabricate a pilot bearing for it, i know someone that actually made a spacer shim type thing and used the same trans without changing the input shaft, it sounds like more of a hassle than its worth to me, i would just get a built aod, with a stall and a shift kit, or just get a trans from a junkyard out of a 5.0

04-24-2002, 10:57 PM	#6
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Actually, the gears, bearings, syncros, and input shaft are all different between the 85+ Mustang 5.0 T-5 and the 4 popper model. The top 4cyl T-5's were rated at 240lb/ft, and the weakest 5.0 T-5's were rated at 265lb/ft. A 1990+ T-5 would have upgraded gears and a 305lb/ft torque rating. That's what I would be looking for if I were you.