T-5 input shaft and pilot bearing

Is the part of the input shaft that goes into the pilot bearing different diameter between the T-5 and Saginaw 3 and 4 speeds?? OR are there different SBC pilot bearings for T-5's and Saginaw transmissions??? Thanks in advance...

 

I see on Jegs website that there are different diameters for Chevy. But I also have never seen different brgs for sbc. Could you have a Ford tranny? They have different dias.

 

I replaced a 3spd Saginaw with an 89 S10 5spd and now have a vibration in 5th gear.. I'm trying to determine if it is pilot bearing(which I did not replace), drive shaft or transmission...

 

Vibrations can be a bitch to find...........don't underestimate anything.

 

Chevy T5 is the same as any older 3 or 4 speed.

Ford is the one that used a couple different diameters.

Vibrations going down the road are not pilot bushing related. If it's "jumpy" when launching, that could be pilot bushing related.

 

Thanks Snarl, that helps a lot...

 

The T-5 imput shaft is metric.......

 

And yet it fits a standard Chevy pilot bushing just fine.

 

Are there different SBC pilot bearing part numbers for T-5 and Saginaw transmissions or are they the same.. That's what I can't seem to get a definite answer on.. I don't want to take everything apart if they are the same bearing...

 

Well, if you look up a pilot bushing for an '85 Camaro 305V8 and a '70 Camaro 307V8 you would find the same pilot bushing listed.

 

Thanks again Snarl.. I probably could have checked at my local parts house and wouldn't have needed to start this thread.. I guess I'll look at my driveshaft next for my vibration.. I had no vibration with the old 3 spd and old driveshaft.. When the new driveshaft was made it was a very tight fit to install it and maybe it needs another 1/2" or so removed...

 

In my T5 to Flathead conversion kit I address the pilot problem with a brass pilot bushing. Sold so many of them my machinist can make them in his sleep.

 

The camero has a different imput shaft than s 10 T-5......the od is the same for all the newer engines....however the ID of the bushing is different for s-10 and others

 

So ^^^ can I buy a pilot bushing for a SBC that fits the S10 input shaft diameter???

 

Guys, I've been running S10 T5's with the regular V8 bushing for around 15 years now.

If you go to www.rockauto.com and take a look at 1985 Chevrolet. Look at the Camaro, S10 & Astro van. The bushing ID's are all listed at .592-.594 (depending on manufacturer). The OD does change for some engines, such as the 2.8V6 which is smaller OD.

I have also taken a mic to the tips of several different types of Chevy used transmissions and found them to all be the same, give or take a hair, as they were all in used condition.

 

Thanks again Snarl.. I'd hate to take mine apart and replace the pilot bushing with the exact same part...