im working on a 1977 f 100 custom 4x4 swaping the 390 for a 460 i have the 460 bellhousin bolted to the trany the motor is in the truck motormounts all work but the motor&trany wont come to gether all the way any ideas

 

How close can you get it?

How did you align the clutch plate? If it is not perfect, you won't get the trans all the way in.

Are the splines in the clutch plate correct for the input shaft?

Other wags:

--wrong size pilot bushing/bearing

--input shaft too long for bell

If none of this hits the mark, stand by, others might could have more/better or more better ideas.

 

the trany&motor are so close i can get 3 tranybolts in but it will move side to side it wont mate evenly i was told the imput shaft mite be to long is that posible

 

Yes. Car and truck bells are different depths. But you said you got a bell from a 460? That would be a truck only bell, as no car ever got a MT with a 460. Only a 429 would have had a MT in a car.

Input lengths may have varied for truck applications.

Best pull it and do some measuring, make sure on the pilot too.

What trans is it?

 

im pulling the motor to look at the imput shaft and pilot then go from there thanks