Will be replacing my 4-speed trans in my '68 RR next month.

When we replaced the trans in my friends Formula "S" we used the newer roller bearing instead of the pilot bushing in the crank(his choice).

It looks like a nice piece. My bushing is relativley new but I was wondering, is the bushing preferred over the roller bearing or is the roller newer tech and better?

I know the roller is used on uncut cranks, but that is not an issue in my case.

Thanks for any input.
Frank

I prefer the roller. Never did like the bushing type.

I hate the roller,just one more moving part to fail If you have just a small installation problem where the tranny doesn't go in just right you can damage the roller easily where the bushing is more forgiving when the pilot snout hits it wrong.
Gus

rollers work fine I have pulled them out of cars that had 100k and them still look OK but have seen some that where tore up. but anything can fail I have also seen the bushing crack and fall into pieces.

aw heck,, put both of them in..

I have one of each ahead of 833s in 2 fairly hot street cars, and can't tell any difference between the 2 in operation, if that's a consideration for you.

Sorry for jumping on your post, but if you have a crank that's not drilled for a 4-speed, and you use a roller, do you have to cut the mainshaft on the trans?

Lots of good info in this one:
https://board.moparts.org/ubbthreads/show...&PHPSESSID=

I think the hole is sometimes deep enough but unfinished, sometimes not deep enough and the nose of the input shaft has to come off. I have an eagle crank in mine it had a deep enough hole but it was unfinished. I used the torque converter pocket style roller bearing. I was a little worried about smashing it on install but everything went smoothly.

good luck!

i have never found an intact roller bearing in a cummins clutch job--find only the shell---personally i not sold on them---but you probably wont get that kind of mileage out of your clutch---bob

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aw heck,, put both of them in..

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That's what I did. I had the bushing in and couldn't get it out, so I left it in and installed the roller bearing. It works just fine.