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Re: T5 adapter plate fabrication/rear end?
spitfire18 #1353280 Sat Apr 04 2020 01:41 PM
Joined: Oct 2015
Posts: 215
Shop Shark
Or if you can locate a v 8 t5 you just change the clutch disc to a 26 spline and bolt it in . You'l still need a s 10 trans to use the tail section and top to properly locate the shifter . You would in my opinion end up with better gear ratios as well as I found the 3.76 first gear pretty close to a bull gear when mated to any rear end with a
3 to 1 ratio or higher .
But if one must use a s 10 tranny a Jeep 10 spline input shaft could be a bit simpler


good planning is no substitute for dumb luck
Re: T5 adapter plate fabrication/rear end?
spitfire18 #1353359 Sat Apr 04 2020 10:23 PM
Joined: Mar 2010
Posts: 9,228
Master Gabster
The jeep 10 spline input shaft will not need a spacer. The splines are cut further than what the s10 ones are, allowing the clutch disc to move further, negating the need for the spacer plate. You still need to cut 3/4" from the end of the input shaft of Jeep input shaft.

Re: T5 adapter plate fabrication/rear end?
spitfire18 #1353458 Sun Apr 05 2020 01:43 PM
Joined: Sep 2013
Posts: 1,022
Shop Shark
In approximately 10,000 miles I've had no issues with a modded 90 S10 T5 input shaft. I shortened the shaft length and the throwout bearing collar to match the original SM420 parts. To address the clutch spline length issue, the important change was using the bench grinder to reduce the input shaft diameter (inboard of the splines) so it matched the diameter at the bottom of the splines for (as I recall) about 1/2". This allowed the clutch disk to not bind due to the splines being too short on the now shortened shaft.

Would I do the above mods with a V8 or high HP 6 cylinder powered truck? NO SIR. But my truck makes 85HP. Even with a higher HP engine, I wouldn't expect any problems since I don't do smokey burnouts or WOT driving these days. Well, not with the '51 anyway. smile


Last edited by moparguy; Sun Apr 05 2020 02:14 PM.

1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1951 Farmall Super A

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