pilot bearing for a 391 crank

[cobrabritt83]

Has anyone used a 391 truck crank in a 427 FE? I'm trying to find a pilot bearing that would work with a TKO 600.

[blykins]

Quite frequently.

I machine an adapter so you can use a regular FE bushing or bearing. Otherwise you can use a regular FT bushing.

[Dwight]

I swapped my top loader for a T-5 in my '66 Fairlane last week. I have a 390 motor. I bought a bronze bushing from O'Reilly's part store for $7.

I think the T-5 and TKO input shafts are the same size.

And a buddy of mine told me after the fact that roller bearings are available for the 390 crank.

Hammered in it and I have put over 300 miles on the car this weekend with no problems

[blykins]

The 391 crank is a different animal and doesn’t take normal FE bushings.

[Mark IV]

Originally Posted by blykins

The 391 crank is a different animal and doesn’t take normal FE bushings.

Not to mention the crank nose diameter that will need to be addressed if an FE damper is used.

[Dwight]

My buddy found three 391 motor / blocks locally last week. He is looking to use one for a motor in his '66 F100.

blykins can he use the 391 block and a 390 crank?

[blykins]

Yes, but FT blocks need to be bushed for the different sized distributor shaft.

[Dwight]

Thanks

we knew about the bushing for the distributor