T56 Pilot Bearing Question
Thread Starter
Junior Member
Joined: Jun 2006
Posts: 18
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From: Fort Erie, Ontario
Car: 1986 Trans Am
Engine: 383 Stroker
Transmission: LT1 T-56
Axle/Gears: 3.73
T56 Pilot Bearing Question
Been wanting to do a T56 swap for a long time and have been acquiring parts. One thing I did over look that I am not sure is if the crankshaft on my motor is machined to accept a pilot bearing? My motor is a pre 1986 383 stroker with a 2 piece rear main seal. I tried calling the shop that built it back in 2005 but they could not give me a definite answer. So my question is, do all aftermarket performance crankshafts drilled for a pilot bearing?
Joined: Sep 2005
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: T56 Pilot Bearing Question
AFAIK yes they are.
Not hard to tell... the bearing/bushing (you could use either) is about 1-3/32" or thereabouts in diameter. If the crank has a hole that size and about ¾" deep, it's prepped.
Not hard to tell... the bearing/bushing (you could use either) is about 1-3/32" or thereabouts in diameter. If the crank has a hole that size and about ¾" deep, it's prepped.
Joined: Aug 2006
Posts: 12,812
Likes: 110
From: Central NJ
Car: 86 Trans Am
Engine: 408 stroker sbc
Transmission: TKO600
Axle/Gears: Moser full floater m9, 3:70 trutrac
Re: T56 Pilot Bearing Question
Never seen one that wasn't able to accept a pilot bearing
Thread Starter
Junior Member
Joined: Jun 2006
Posts: 18
Likes: 0
From: Fort Erie, Ontario
Car: 1986 Trans Am
Engine: 383 Stroker
Transmission: LT1 T-56
Axle/Gears: 3.73
Re: T56 Pilot Bearing Question
Thanks for the information everyone! I did not want any surprises this winter when I pull the transmission to do the swap.
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