i am new to this site and i was hoping i could get some answers. I just bought a 1975 mustang ii that has been all done up with a 351w. my question is i tried to put the engine in but the flywheel seems to big? i have a c4 tranny that has been built with manual valve and 3500 stall, the fly wheel will not fit inside the bell housing?? please any help would be great.

 

351W needs a C6?

 

Flywheel or flex plate? Autos use a flex plate, manuals use a flywheel.

 

ya maybe that what it is how do i tell? i am new to ford was a chevy guy all my life but always liked fords, is there 2 size flywheels for the c6 ?

 

flex plate! i am sorry.

 

I know there are different flywheel sizes for Ford, one for 10/10.5" clutches and one for 11" clutches. Maybe there are different size flexplates for the C4/C6? Try asking in the Classic section, there are a lot of auto guys with C4 and C6 setups.