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LT1/T56 Pilot bearing

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Old May 18, 2010 | 12:47 PM
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From: Stamford, New York
Car: 80 SE/TTA;88 T/A GTA;86 T/A
Engine: 4.9L Turbo; LT1; empty
Transmission: TH350; T56; empty
Axle/Gears: 3:23 disk; 4:10 disk ; 3.42 disk
LT1/T56 Pilot bearing

I apologize if this has been covered many times, but with my dial up internet, pictures take 20-30 minutes to fully load and I didn't find anything good in the text of the "T56 swap" sticky or others I've looked over. I picked up a pilot bearing for my '94 applications (this is all going in my '88), and it appears I got the roller type of bearing. Now which way to I put this in? Which side faces outwards? The solid side or the side that has the split in it for the roller bearing carrier? Just don't want to waste $25 on something stupid. Thanks in advance!
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Old May 18, 2010 | 02:26 PM
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From: Stamford, New York
Car: 80 SE/TTA;88 T/A GTA;86 T/A
Engine: 4.9L Turbo; LT1; empty
Transmission: TH350; T56; empty
Axle/Gears: 3:23 disk; 4:10 disk ; 3.42 disk
Re: LT1/T56 Pilot bearing

Bump, really wanna get this bearing in, running out of other things to do on the swap. Thanks.
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Old May 18, 2010 | 03:09 PM
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From: Stamford, New York
Car: 80 SE/TTA;88 T/A GTA;86 T/A
Engine: 4.9L Turbo; LT1; empty
Transmission: TH350; T56; empty
Axle/Gears: 3:23 disk; 4:10 disk ; 3.42 disk
Re: LT1/T56 Pilot bearing

I want to put the solid side with the small taper in the center outwards for the input shaft to go into correct? Whatever seal is in there looks like it's going the opposite direction that it should be, so just wanna make sure, guessing it's there to keep the grease on that side.

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Old May 18, 2010 | 03:47 PM
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From: Orlando
Car: 1991 Camaro Z28
Engine: 357, Canfield heads, solid roller,
Transmission: Upgraded 03 Cobra T56
Axle/Gears: 9" 3.50 gears and Detroit Locker
Re: LT1/T56 Pilot bearing

According to some replies in the T56 sticky, it goes in like the picture on the right that you posted. To where you can see the seam and the big flat area is up against the back of the crank. Like I said though, this is according to that thread as I have no expierence with that bearing. Its on page 2 of the thread if your interested in reading it.
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Old May 18, 2010 | 04:22 PM
  #5  
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From: Stamford, New York
Car: 80 SE/TTA;88 T/A GTA;86 T/A
Engine: 4.9L Turbo; LT1; empty
Transmission: TH350; T56; empty
Axle/Gears: 3:23 disk; 4:10 disk ; 3.42 disk
Re: LT1/T56 Pilot bearing

Also on page number two, post #65 by sofakingdom, shows it installed the way it is in my image on the left.

Honestly it makes more sense that way, because when I go to use the clutch alignment tool, and go to take it out, it makes a nice pop of a seal, of which as mentioned before, I believe that seal is there to keep grease in there instead of if it was facing the other direction, all the grease would fall out, and I can easily see why dirt and other stuff among drying up would happen which would cause the weird wearing issue of the input shaft. That could possibly explain most issues people have with these bearings is if put in backwards like pictured on the right, it would let clutch dust and everything else in. Still no definate answer from anyone yet, but just my observations.
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Old May 18, 2010 | 10:04 PM
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Re: LT1/T56 Pilot bearing

the hole is blind, so no dirt is going to get in from the rear. This means it makes absolutely no sense to have the seal on the back. I vote for the left picture. Also, i think a pilot bearing tool will remove it just fine when it's installed that way, so i really dont see a downside.
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Old May 19, 2010 | 09:40 AM
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From: Stamford, New York
Car: 80 SE/TTA;88 T/A GTA;86 T/A
Engine: 4.9L Turbo; LT1; empty
Transmission: TH350; T56; empty
Axle/Gears: 3:23 disk; 4:10 disk ; 3.42 disk
Re: LT1/T56 Pilot bearing

Alright, left it is, as it makes the most sense, and it's already in my crank that way lol.
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Old May 19, 2010 | 01:01 PM
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built91Z28's Avatar
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From: Orlando
Car: 1991 Camaro Z28
Engine: 357, Canfield heads, solid roller,
Transmission: Upgraded 03 Cobra T56
Axle/Gears: 9" 3.50 gears and Detroit Locker
Re: LT1/T56 Pilot bearing

In reality, against what the others said in the sticky, this is the way I would have done it too.
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Old May 21, 2010 | 10:31 AM
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From: Prince George, BC, Canada
Car: 89 GTA
Engine: 5.7L Supercharged
Transmission: T-56
Axle/Gears: Moser 9" 3.70
Re: LT1/T56 Pilot bearing

I went left side also, no problems for years, you want to keep the grease in there and not have it spill over the clutch.
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Old May 21, 2010 | 10:36 AM
  #10  
84redta's Avatar
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From: Stamford, New York
Car: 80 SE/TTA;88 T/A GTA;86 T/A
Engine: 4.9L Turbo; LT1; empty
Transmission: TH350; T56; empty
Axle/Gears: 3:23 disk; 4:10 disk ; 3.42 disk
Re: LT1/T56 Pilot bearing

That's what I thought. Thanks guys.
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