Ravin351
New member
I know that C6's are for the big blocks and 351Ms, C4's for the small blocks, but what about manual transmissions?
Does an NP435 only bolt up to small blocks and not the 351M? Or do you change the bell housing? What is the model of 4 speed transmission that comes factory on the 78-79 Broncos and Trucks with 351Ms/400s?
Does an NP435 only bolt up to small blocks and not the 351M? Or do you change the bell housing? What is the model of 4 speed transmission that comes factory on the 78-79 Broncos and Trucks with 351Ms/400s?