3 speed transfer case?'s

Joined
Jan 17, 2005
Messages
106
Location
Little Rock, Arkansas
Ok, I am putting a 4.3 vortec in my 72 cruiser. I am going to run a 4 spd toyota transmission and my 72 3 spd transfer case. Based on some research I believe I am going to need a transition gear to mate the transmission output shaft to the gearing of the transfer case. I stumbled across this gear from a 74 transfer case from a local guy that he says will bolt the 4 spd tranny to the 3 spd transfer case. Is this correct? What does the FSM call this gear so I can start tearing into the transfer case? Thanks.
Jake


 

76FJ40

Old Fart
SILVER Star
 
 
 
Joined
Mar 1, 2002
Messages
4,037
Location
NOVA
There's what's known as the "transition" T case from '74 that uses the gear you're talking about. You can check the SOR catalog to see the specific date range that this gear applies to. as I recall, it's something like 32 teeth and 16 spline.
 
Joined
Sep 20, 2004
Messages
2,402
Location
here
you want 16 spline on the inside .
It is a special gear cause it has 16 inside and mates to the older 3 spd tcase gearing whereas the 4 spd tcase's had different gearing so you use the special gear that lets the 4 spd tranny go infront of the 3 spd tcase.
 
Joined
Jan 17, 2005
Messages
106
Location
Little Rock, Arkansas
peesalot said:
you want 16 spline on the inside .
It is a special gear cause it has 16 inside and mates to the older 3 spd tcase gearing whereas the 4 spd tcase's had different gearing so you use the special gear that lets the 4 spd tranny go infront of the 3 spd tcase.
It is the 16 spline. When you say go in front of 3spd tcase you mean IN the actual case correct?
 
Joined
Mar 27, 2003
Messages
6,169
Location
Georgia Tech
Yes he does.

Some '74's got the four speed tranny with a 3 spd tcase. Hence the adapter gear. Count the inner splines to be sure. Some '74's got 3 spd trannies with a standard 3 spd case.
 
Last edited:
Top Bottom