Help with NP205 to 4L60E adapter & shifter arm
 

In my swap to a 5.3L GEN III, I used Advanced Adapters for my NP205 to 4L60E. I am finding that my NP205 shifter arm will not bolt up to the new transfer case adapter. The original shifter arm bolt is a 7/16-14 while the new adapter bolt hole is much larger (1/2" or 9/16"). Have you guys run into this, and what have you done? I heard that maybe I need to use a newer T-case shifter arm and bolt. Suggestions please!!!

Re: Help with NP205 to 4L60E adapter & shifter arm
 

I think the shoulder is the same diameter for the 9/16 and 7/16 thread adapter bolts. Here's a couple places to get the shoulder bolts. Probably specs on the sites somewhere. A bit pricey, but if time is money then maybe not.


https://jb-custom-fabrication.myshop...lt-upgrade-kit

http://jkwoffroad.com/offroadproducts.php




j

Re: Help with NP205 to 4L60E adapter & shifter arm
 

The shoulder is not the same for my 7/16-14 bolt. The shoulder is small and is about the same as thread diameter. That's the problem, I can't physically use a shoulder bolt where the shoulder is 7/16" and the thread diameter is now larger i.e. 9/16"; unless I use a stud or different shifter arm. Also, your first link does not work. Thanks.

Re: Help with NP205 to 4L60E adapter & shifter arm
 

Crash did one similar to yours...somewhere around page 5 his shifter is mounted but I ddint have time to read what he did....might contact him and see what he did.....
http://67-72chevytrucks.com/vboard/s...=494599&page=5

Re: Help with NP205 to 4L60E adapter & shifter arm
 

Drill out the hole on the shift lever arm. Plus, are you sure there's not a sleeve in there? The original bolt for the 7/16 thread should have something like a 5/8 or 11/16 shoulder. My Advanced Adapters adapter has the larger boss and threads also, but the shoulders on the aftermarket bolts fit the shift lever hole. I used a JB with the bronze bushings. It is smooth solid action now.
:chevy:


j

Re: Help with NP205 to 4L60E adapter & shifter arm
 

Thanks for the help. Tomorrow I'll take some pictures of the shift arm and bolt, so you can see what I have.

Re: Help with NP205 to 4L60E adapter & shifter arm
 

So here is what I have for transfer case shifter arm. It looks like early style. So I punched out the inner bushing and sleeves. I bought one of the newer style 9/16" shoulder bolt and it fit perfect.

Attachment 1956257

Attachment 1956258

Attachment 1956259

I punched out this bushing and plastic sleeves.
Attachment 1956260

Re: Help with NP205 to 4L60E adapter & shifter arm
 

Nice, glad you got the correct bolt. That sleeve was a hack fix! I love how mine shifts now too.

Another item is the linkage. Mine rattled and chimed, drove me nuts. I stamped plastic washers out of a plastic jug and stacked them to take up the slack where ever there's a cotter pin and washer. Now it's quiet and solid. :chevy:

Also, this may sound silly but I like the bends on your transfer lever. The knob will land next to your calf. You will only need to reach down a bit. Great lever IMO.



j

Re: Help with NP205 to 4L60E adapter & shifter arm
 

I not positive, but believe there is supposed to be a Belleville style spring washer in there to take up the slack. My set up doesn't have one, but I'm gonna look for one.