Malacca

I'm about to buy a 1990 mustang convertable but I have one major question. The trans in the mustang is completely shot, it only has 1st and 2nd gear with no reverse. My question is, I found a C4 trans for 75 bucks and was wondering if this will bolt up tp the motor (302) and to the trans mount? Also will the stock driveshaft work?

Thanks

shawnk007

Yes. It will bolt up and you can use the same driveshaft.

Malacca

thanks man, i appreciate it

shawnk007

However, I should add that, the C4 tranny has two different types of bellhousings. A large bellhousing and a smaller one. The smaller one requires a 157 tooth flexplate, and the larger one requires a 164 tooth flexplate. Now the AOD has a 164 tooth flexplate. So, if its the large bellhousing, you'll be fine. But if its the smaller bellhousing, you'll need the 157 tooth flexplate. Also, you'll need a C4 torque converter.

mjr46

you'll need a special flex plate if your tranny is an aod then you'll need a c-4 flexplate that is balance for a 50oz motor. and you'll have to rework the cooler lines a little and shift linkage.

shawnk007

Nice addition mjr46. So, if you have the smaller bellhousing, you'll need a 157 tooth 50 oz flexplate.

mjr46

same to you too!!! the 157 is more rare and came in mustang II's so yess you'll need a flexplate for the 157 tooth bell housing balanced for a 50 oz motor also

mjr46

wish I had one of the smaller bellhousings I need one for my broncoII v-8 conversion but everyone wants an arm and a leg for one!!! dang 2.8 won't move out of it's own way on the highway with my plow on it!!!

Malacca

if the 157 is more rare then chances are the one I found will have the 164, right?
hopefully.

shawnk007

Its more likely. But they sell the 157 tooth 50 ox flexplates new on ebay for about 30-40 bucks