The Stovebolt Site Forums The Shop Area Driveline T5 onto a 230 250 Chevy info

I thought this may be of help to some that are doing a T5 on a 230, 250 , 292 chevy in an AD truck, It's specific to T5, 1" 14 spline small aluminum bell 10.5" disc.
All the part numbers we used are listed. It took a lot of searching and getting wrong information to complete this so I decided to give a little back and make it easier for those that want this swap.
Its a bolts in except for the cross member removal or modification and the drive shaft. I am very limited in my knowledge of T5 and the various swaps so this is only about 1" 14 spline T5 on a 230 250 in an AD. Lugnutz has a very good one on 26 spline I think and there are others on 235. No one else seems to have finished theirs or finished their writeup or no part numbers listed other than SBC disc or BBC Throwout brg.


1989 14 spline S10 T5 swap onto a 1968 250 Chevy in a 1952 Chevy 3100 truck
Hollister Road Company, Houston Texas 08/2017

This document is specific to the above title. This is what we did and it works as it should without disc chatter, binding or disc/spline slap on disc engagement. There is no cutting of splines or bearing collars or input shafts or other mods except the driveshaft and crossmember if you remove it or modify it. This is a bolt in swap. I’m not sure about 292, it should work but its torque may be too high for the T5 and not sure about other engines or other years past 1959 but it should work. Its specific to a T5 on a 230, 250 Chevy 6 cylinder which could in theory be in anything. The hydraulic clutch takes the headache out of the clutch linkage setup. We used the original clutch pedal and mounted the Wilwood master on the frame rail. The Wilwood slave is a push or pull, we used it as a pull and made a bracket to mount on the back of the transmission and connect them with the Allstar braided hose. Any brand hose that size and length would work. -3AN straight x 3/8-24 Inverted 90 degree, 24 inches long. New bolts need to be used and check for proper engagement of thread into the flywheel, crank and pressure plate cover. The reason we didn't go with a 26 spline or a 11" disc is it was a customers truck and he started the swap but could not finish so we had to use what he had for the most part to keep the cost inline.

Below is what you need to swap a 1989 S10 2.2L 2WD T5 Transmission w/14T input shaft onto a 230, 250 Chevy inline 6 cylinder in a 1947 to 1954 Chevy Truck, original transmission cross member removed using a hydraulic clutch and non-hydraulic throw-out bearing.

Flywheel 1985 Camaro 10.5" 153T, PHT 6516-121211 or 6516 Brute Force.
Flywheel bolts NEW not used. MRG-912 , 7/16-20 x 1”

Throw-out bearing, 1697C national, long type, used on CHEVROLET 1942-1980, try early 60’s late 50’s 235, Bore=1.376", Outer Diameter=2.7656", (tall)Width=1.9531"

Clutch Disc, 716104: McLeod 10.5 Diameter 1” 14 Spline Clutch Disc. Not the $89 speedway Flathead disc for T5, It’s different. This is custom made with the proper hub off set with the proper diameter disc. You do not need to cut back the splines to eliminate binding. While the Astro van disc has the correct spline it’s not positioned right and is 11”, too large for this flywheel, clutch package and bell housing. The S10 9-1/8” disc has the correct spline but its 1-1/8” to small on the OD and over hangs the pressure plate inside diameter by an 1/8 — 3/16 making the effective area about 8.25”

Pressure plate
M-Pact 361874 others will work, fits many GM cars and trucks, CHEVROLET C10 PICKUP 1963-1976
Bolts are MRG-910

Fork, Cast steel type, ATP ZA-104, CHEVROLET C10 1961-1972

Small bellhousing, Aluminum, GM # 3858403 67-75, 76-81 Chevrolet. 53-81 corvette. 153T bell, 4-5/8" center hole (4 speed car Muncie, Saginaw, T10).
Not SM465 or 1963 small bearing retainer transmissions.

Hamilton T5 spacer from Hamilton Intakes this makes it so you don't have to cut the shaft or bearing collar. It goes between your bellhousing and transmission. You will need 4 Allen head screws a ½” longer than the original bolts. They may come with this adapter but they are 1.5” to 1.75”long.

Clutch hydraulics.
Hydraulic Ram, Wilwood — WIL260-1333
Hydraulic hose, Allstar ALL46332-24, -3AN x 3/8-24 Inverted 90 degree 24 inches long
Pedal cylinder, Wilwood - WIL260-3376
LMC Clutch return spring 30-3161
LMC Clutch rod pivot nut 30-0912, you need this so the pull rod does not bind at the fork
LMC Fork Boot 30-1920

Reference information:
http://hamiltonintakes.com/products/s10-t-5-swap-adapter/borg-warner-t-5-information
http://t5conversion.wikifoundry.com/ for 235 swaps with 235 bellhousing.
https://en.wikipedia.org/wiki/Borg-Warner_T-5_transmission
http://www.advanceadapters.com/products/716104--mcleod-105-diameter1-14-spline-clutch-disc/
https://www.google.com/

Parts suppliers:
www.rockauto.com
www.lmc.com
http://www.advanceadapters.com/
www.ebay.com
www.wilwood.com
www.allstarperformance.com

FAQ.
1. I want to swap a T5 into an XYZ whatever car/truck/boat/barbeque what do I need? If it’s not a 1989 T5 onto a 230 250 Chevy in a 47-54 truck I have no idea.
2. My buddy’s uncle’s secretary’s nephew says he heard that the Speedways Flathead disc will work. Great, Call them when it doesn’t, don’t call me.
3. Can I change out part X for part B? You can do anything you want, you just can’t call me when it doesn’t work.
4. What years have a 1” 14 spline? I used a 1989 2.2L 2wd. There are hundreds of sites that will tell you what years use a 1” 14 spline.
5. Can I use a different spline transmission? Sure, but that’s a different swap and not covered here and I have no idea what parts you need.
6. Do I need to use the original transmission cross member? I would try to if you can, it is a structural part for the front suspension keeping the springs from twisting the frame at that point on suspension flex and supports the frame horns for the cab mounts. We did not use it only because it was not there to use. If you’re using an MII or variant IFS then I would not use it, it would just be in the way and not needed.
7. Can I use a hydraulic throw-out bearing? No Idea. Maybe.
8. How much does it cost to do this swap? Depends on parts and availability in your area and how bad you want them.

This really needs to be made a Tech Tip. Good write up Dave.

Thanks, If anyone sees and errors or can expand on this with actual "I did it and it worked" info let me know I'll correct the PDF.

Good info here. Very good documentation. Any reason you didn't do the Jeep shaft swap and stay with the original clutch package?i

The reason for the way its done was he had a lot of the pieces and all the original parts were gone or he didn't get them when he got the motor. He had already purchased the small bell for a 10.5" clutch, pressure plate , flywheel, the starter that fit all that, transmission and the Hamilton spacer and the drive shaft was already made so it was do the best we could with what we had. Re-doing it all to an 11" disc just didn't seem practical money wise. We added the Mcleod 10.5" disc, tall throwout brg, new fork and the hydraulics and brackets. He had a 14 spline small disc but it looked very small even on a 10.5" flywheel with not a lot of contact area.