Transmission Pilot Bearing Availability?

[Mulana]

Hello: I am in need of a transmission pilot bearing for my 432 V6 and 5-speed. Since I could not easily find a 478 flywheel, I had a 401 flywheel balanced to work on my 432. I went to my local parts house to find a needle bearing or bushing, but I am not having any luck with the dimensions I gave them. Anyone have a source for this or will I have to get it made? The dimensions I have are; 0.985 ID, 1.355 ID, and 0.755 in length.

Thanks in advance, Jim Mx.

[Prowbar]

Hello Jim,

Are you sure the OD is 1.355" and not 1.378"? To my knowledge, all bearings used in these trucks are of a metric size.

1.378" is 35mm
.985" is 25mm
.755" is about 19mm

I can find bronze bushings with a 35mm OD and 25mm ID. These can be easily machined to the right length.

For my 478 flywheel, it had a rather larger pilot bearing for a large truck trans. Since I went with the SM420 I made a pilot bearing conversion sleeve to accept a standard 6202 bearing, used on the 305 flywheel. That sleeve was pressed into the flywheel.

You're using the big truck trans in your pickup project?

[Mulana]

Thanks for the quick reply. I am somewhat new and did not know the bearings are metric. I could have mismeasured the bore of the flywheel. Time to head for the parts house and see what they can come up with. Yes, I am using a big 5sp for my '62 1 ton pickup.

[Prowbar]

I said 1.375" but meant to say 1.378".
1.378" x 25.40 = 35,0012mm