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Crankshaft to transmission pivot bearing thing

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Old 05-09-2024, 01:30 PM
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Crankshaft to transmission pivot bearing thing

Quick question. I am about to bolt the transmission (700r4) back up to the motor and I was wondering if the bearing thing in the crank is supposed to turn freely or not? It seems like it's rusted tight. Any help is much appreciated.


Last edited by killerbean; 05-09-2024 at 01:36 PM.
Old 05-09-2024, 01:37 PM
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Re: Crankshaft to transmission pivot bearing thing

Is that in the back of the crankshaft? Old pilot bearing for manual?
Old 05-09-2024, 01:39 PM
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Re: Crankshaft to transmission pivot bearing thing

not needed with an automatic-leave as is . with a stick tranny,must be replaced with a good one.Pilot bearing.
Old 05-09-2024, 01:40 PM
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Re: Crankshaft to transmission pivot bearing thing

Originally Posted by Tuned Performance
Is that in the back of the crankshaft? Old pilot bearing for manual?
Yea it's in the back of the crank. Do automatics have pilot bearing? The car the motor came out of was setup for an automatic. It didn't have a clutch or anything.
Old 05-09-2024, 01:43 PM
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Re: Crankshaft to transmission pivot bearing thing

Originally Posted by 8t2 z-chev
not needed with an automatic-leave as is . with a stick tranny,must be replaced with a good one.Pilot bearing.
Ok, not sure why the motor has a pilot bearing then because the car it came out of was setup for an auto. Appreciate the response.
Old 05-09-2024, 02:16 PM
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Re: Crankshaft to transmission pivot bearing thing

Has the motor ever been rebuilt?
Maybe someone threw in a 305 crank for manual trans, it happens.
or maybe was going to do a manual swap and changed mind?
Think thirds used a bushing not a bearing so its not factory.
Whatever the reason, id remove it.
Old 05-09-2024, 04:35 PM
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Re: Crankshaft to transmission pivot bearing thing

Make sure the converter slides freely into the crank. You may have to remove that bearing if it doesn't.
Old 05-09-2024, 04:47 PM
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Re: Crankshaft to transmission pivot bearing thing

It ended up fitting without taking it out.
Old 05-09-2024, 04:48 PM
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Re: Crankshaft to transmission pivot bearing thing

That bearing won't bother the converter. It doesn't go into that hole in the crank. It's not bothering anything as long as the car has an automatic.

Personally I'd just leave it. Sure, the car will go faster without it (it's what, an ounce of dead weight, or whatever), but looking at that mess in there with all that rust, it'd be far more trouble than it's worth to try to remove it.
Old 05-09-2024, 04:51 PM
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Re: Crankshaft to transmission pivot bearing thing

Originally Posted by sofakingdom
That bearing won't bother the converter. It doesn't go into that hole in the crank. It's not bothering anything as long as the car has an automatic.

Personally I'd just leave it. Sure, the car will go faster without it (it's what, an ounce of dead weight, or whatever), but looking at that mess in there with all that rust, it'd be far more trouble than it's worth to try to remove it.
Haha yea I didn't really wanna deal with that so I was happy it fit.
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