Identifying GM Transfer Cases: Show us in pictures what you have with measurments and Adapters.

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Fastduramax

Supporting Member
Supporting Member
Joined
Jun 8, 2022
Posts
292
Reaction score
483
Location
Uranus
First Name
Todd
Truck Year
1986
Truck Model
K10 Silverado
Engine Size
572
Guess I'll answer my own question incase anyone else is interested... Tejas SteelWorks Inc out of Texas, ordered one this morning...
 

90Supurban

Junior Member
Joined
Jun 21, 2024
Posts
15
Reaction score
14
Location
Midwest
First Name
D
Truck Year
1990
Truck Model
V1500
Engine Size
5.7
Trans mount is seeing a spacer made up ...
Going from a TH 400 Oem 4x4 adapter to a 4L85 4x4 needed 4.6" more leg ..

You must be registered for see images attach


This OEM big honkin adapter, did the centering ring have to be machined down to fit the 4L trans?
 

dragstews

Full Access Member
Joined
Mar 27, 2024
Posts
263
Reaction score
893
Location
Belleview Florida US of A
First Name
Jesse
Truck Year
Body 1954, frame 1975
Truck Model
R-100
Engine Size
406 ci SBC
If I had used the og TH 400 adapter on the 4L case machining would had been needed on the adapter in order to bolt onto the 4L trans case ..

Didn't use it, used the og GM 4L 4X4 adapter instead + the Canadian custom made adapter ...
No machining on my end was needed, it was Plug & Play ..

You must be registered for see images attach



You must be registered for see images attach
 
Last edited:

SquareRoot

Full Access Member
Joined
Mar 18, 2017
Posts
4,216
Reaction score
8,092
Location
Arizona
First Name
Mike
Truck Year
85
Truck Model
K20
Engine Size
350
Got the transfer case shifter nailed on ...

You must be registered for see images attach


You must be registered for see images attach


Made it to look like the transmission shifter, trans is shifted at the column .. Used a cut down to fit 1975 Cadillac column, did get the needed swing for having low gear ..

You must be registered for see images attach
That shift knob looks busier than a cucumber in a women's prison!
 

dragstews

Full Access Member
Joined
Mar 27, 2024
Posts
263
Reaction score
893
Location
Belleview Florida US of A
First Name
Jesse
Truck Year
Body 1954, frame 1975
Truck Model
R-100
Engine Size
406 ci SBC
That shift knob looks busier than a cucumber in a women's prison!
It's soon to be replaced with a wooden knob ...

You must be registered for see images attach


Wanting to match the dashboard ..

You must be registered for see images attach


Going to see real soon how close I'll get to achieving that goal ?

Freaken dash is looking kind of busy ...
Didn't want to see anything hanging from under it ..
Although I did mount just two add-ons ... Three counting the electric brake controller ..

You must be registered for see images attach


The overdrive pull handle is just along for the ride, doesn't have a function ... I had it chromed many years ago and nailed it under the dash just to keep old memories alive ...

Next to it is the air bag gauge/switch ..

Since the dash does look as busy as a two peckered dog, stuck the stand alone transmission controller in the glovebox ...

You must be registered for see images attach


Being the controller has a trans temp readout on demand, mounted it on the sidewall of the box so it could be eyeballed when towing ...
 
Last edited:

Latest posts

Forum statistics

Threads
44,342
Posts
954,836
Members
36,576
Latest member
chalizmo
Top