I got my daul adapter today. I have a turbo 23 spline t case and bought a 23 spline t case adapter. I have a reg 21 spline tcase to mate up that the new 23 spline input shaft will go in. The 151 is a forward shift, so can anyone help my on how to do this. Where will my shifters be located and can anyone who has done this help me out. Will I have to cut down my shift rails and make them both top shift? Any help will be appreciated. Thanks a lot.
Derek

 

What trans are you running?

I have a Turbo trans (R150F) in my 87. I also have dual cases. The front case (doubler case) is forward shift 23 spline, since the Turbo trans is forward shift. the Second case, is 23 spline Top shift (with 4:1 gearing)

Here is some more info:
http://www.marlincrawler.com/htm/tra...ller/index.htm

from the website: "You must make your crawl box out of whatever style will fit your existing transmission. HOWEVER, you must use a top shifting reduction box for your rear-most case. (Forward shift to Top shift conversion kits available from Marlin Crawler)"

When I had mine done, I sent my cases to marlin. They installed the 23 spline input shaft in the second case, joined the cases together, and sent me back a ready to bolt in setup. It was spendy to do it that way, but it saved me the hassle.

 

these videos might help you a little:
t-case: http://www.trail-gear.com/videos/toy-tcase.wmv
Dual case: http://www.trail-gear.com/videos/toydualcase.wmv

 

I got mthe front 4 cyl case mounted to the adapter with the new 23 spline input shaft and bolted it to the tranny. Now I need to get my turbo from forward shift to top shift. Is there anyway to mofify it or do I have to find a top shift case and switch the shift rails? Thanks a lot
Derek