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Search: Posts Made By: J. Morgan
Forum: Mechanics Corner - Engines, Transmission & More... 08-19-2015, 01:26 PM
Replies: 37
Views: 8,824
Posted By J. Morgan
If the 88 transmission is from a 3/4 tom Suburban...

If the 88 transmission is from a 3/4 tom Suburban you SHOULD be good.

It should be a THM 400, and therefore not electronically shifted.
Forum: Mechanics Corner - Engines, Transmission & More... 08-19-2015, 01:20 PM
Replies: 37
Views: 8,824
Posted By J. Morgan
If you bought a computer controlled transmission,...

If you bought a computer controlled transmission, you will need a wiring harness and processor to make it work, a lot of expense and trouble.

88 was around the transition time to electronic...
Forum: Mechanics Corner - Engines, Transmission & More... 08-18-2015, 08:30 AM
Replies: 37
Views: 8,824
Posted By J. Morgan
The 31 spline shaft is maybe a little stronger,...

The 31 spline shaft is maybe a little stronger, the case and internals are the same except for maybe the removable tail shaft housing.

The difference in strength between the 27 spline and the 31...
Forum: Mechanics Corner - Engines, Transmission & More... 08-17-2015, 11:16 AM
Replies: 37
Views: 8,824
Posted By J. Morgan
Unless a person drives a whole lot, installing an...

Unless a person drives a whole lot, installing an electronically controlled OD transmission has a very long break even point.

The THM 400 was among the strongest and most reliable transmissions...
Forum: Mechanics Corner - Engines, Transmission & More... 08-17-2015, 12:39 AM
Replies: 37
Views: 8,824
Posted By J. Morgan
Help with my transmission

Ok, so while most THM 400 transmissions used a 31 spline yoke, some used a 27 spline yoke.

This yoke was also used on the THM 350 and is interchangeable with those used in THM 400 transmissions. ...
Forum: Mechanics Corner - Engines, Transmission & More... 08-17-2015, 12:01 AM
Replies: 37
Views: 8,824
Posted By J. Morgan
Help with my transmission

I was pretty sure that all THM 400s used the same output shaft, but I guess I could be wrong about that.

What I would do in your position is to get a transmission yoke that fits your new...
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