Ream crankshaft for pilot bushing.

[vintagetin]

I'm putting a new manual transmission behind my 360. It has a crankshaft for an automatic transmission. It has a standard in it now. In order to put the pilot bushing in it I had to cut the bushing down dangerously thin on a lathe to fit it in. This time I want to ream the crankshaft to fit the proper sized bushing in. I don't want to use a drill bit as I am afraid the whole will be crooked and the vibration will tear up the transmission. How can I ream the crankshaft and keep it perfectly square? The closest thing I found was a wheel cylinder honer at the local autoparts store, but I fear the rock will wear out before I've cut the whole big enough. I've been looking at different reamers online but none will work for what I have to do.

Any suggestions?

 

[73rr]

The only way to do this correctly is in a lathe...that said, if the input shaft does not bottom out in the crank then use the Dakota/Jeep sealed roller bearing. It presses into the lip of the crank flange. P4876056AA

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[wedgie]

Contact Brewers. They have a special pilot bushing for that purpose. As 73rr points out, you may have to cut the input shaft of the trans in order to keep it from bottoming out. Measure the depth of the crank hole from the transmission face of the bellhousing and transfer that measurement to the input shaft from the face of the trans. Simple job with a cutoff wheel.

 

[drdodge]

Will the Dakota bearing or magnum pilot bearing go into a 360 crank end, what will need to be done, mine is unfinished for the old bearing also it seems the magnum 3500 pilot shaft does not go very deep.

 

[Daves69]

IMO, If your crank already has the depth drilled then I'd have to say the center line has already been established. Maybe one could strap a 3/8" plate (or similar) over the block end and rent a Mag Base Drill. A good drill should follow the hole that's already there I'd think. Don't drill any deeper than needed and open up oil passages!