1950 chevy truck with a 216 3 speed could i trade 2 a 261 with a 4 spd and will the

[Jose]

tranny and motor bolt on? and will i need 2 make any adaptations

 

[Arturo B]

The motor shouldn't be a problem at all. I would be concerned about the transmission cross member, perhaps that's only thing you might have to change. Compare the tranny's for fitments