Ford c4 Pan fill/case fill trans.

I have a TIC torque convertor "Sat night special "and says use with pan fill trans.
I have 2 case fill trans and both bellhousing large and small.The torque convertor is 11 1/2 pattern.
Small one most likey to small but can,t see why i can,t use the larger one with case fill. Any info Thanks.

 

I think I would call TCI and ask them....

I'm sure they will have an explanation

 

The only difference would be the input shaft if one of the case fill transmissions are early. If they are all 28 spline they will interchange. I run a C-4 in my race car & went from a case fill to a pan fill, no problems

 

According to TCI there are 24 Spline and 26 Spline. The other difference is bolt circle diameter, 10.5" and 11.4"

 

I checked the splines and are the same, 1981 trans.

 

If the splines are the same & the snout fits the back of the crankshaft, you are OK

 

And the bolt pattern fits the Flex Plate .....