Possible Tranny Swap

Possible Tranny Swap

CJeff7

Jeeper
Posts
36
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Location
Texas
Vehicle(s)
1978 CJ7 Renegade, Sand Tan, Blue Levi Edition, Blue Whitco top, 304, T-18A, Dana 20, completely stock
I have a '78 CJ7 with the 304 and T-150 tranny. I have T-18A that I rebuilt sitting in my garage and I'm thinking about swapping. Does anyone know of a website that shows how to do this swap? I wonder if T-18's only came with 6 cylinder engines from the factory?? Thanks.
 
T-18A's came i think in 77 CJ5's and 82-84 CJ7's and to find one of those transmissions with a Jeep input shaft is rare, which i have :D but you can pull them from a ford a dime a dozen and yes a website check NOVAK ADAPTERS
 
There are three previous threads here that are dedicated to this type of swap. You may want to go back through them and see what else has been posted on this. They are:
fj20-t18-CJ5-swap-3373
t-18-question-4765
will-t-18-bolt-direct-replacement-T-150-a-4602

I did a swap of a T-15 to a T18A in my '81 CJ5 with the I6 258. My T18 came out of a V8 '76 J20 pickup and had a long input shaft. so some of the T18's were behind V8's. The input shaft is key for your swap. Not only the length but the splines to. I had to put in a shorter input shaft with a different spline count which also necessitated a different clutch assembly. That part of the swap is pretty straightforward. Because of the length,width and height differences in the Transmissions, the drive shafts have to be changed, shortened on the rear and lengthened up front, and the skid plate/transmission mount had to be moved or customized to match up with the new transmission. It ran me about $900 to get it all done, doing most of the work myself. Knock off about $275 for the cost of the transmission and transfer case on E-Bay and that's a rough estimate of what you are looking at. You also need to see if your Transfer case will bolt right on or if you need an adapter. I have to say that although it was not real easy, knowing what I know now after going through the Rubicon with it both with the T-15 and T18, I would do it again. I can't think of a better improvement for off-roading for the cost.

Hope this helps.

Tommy


 
Yes!!! Thanks very much for the replies. I really think I'll do the swap. Having that low "granny gear" will really make a difference.

Jeff
 

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