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Old 03-20-2013, 06:08 AM   #1
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Default T56 & LS1 - which pilot bearing

I'm getting confused - which pilot bearing do i need?

I keep seeing two different kinds, one that's like a sealed bearing & the other that's like a needle roller bearing.

Any ideas please?
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Old 03-20-2013, 07:33 AM   #2
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The corvette LS7 and CTS use a larger OD bearing that seats in the outer flange of the crank, 12557583
The 98-02 F body and GTO uses the smaller OD bearing that rides in the inner flange, 14061685
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Old 03-20-2013, 07:47 AM   #3
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NAPA carries the smaller bearing as B657....what you want with a LS1/T56 combo.
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Old 03-20-2013, 10:58 AM   #4
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Thanks Chaps - its a 4.8 LR4, will that make a difference to which one i need?
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Old 03-20-2013, 01:31 PM   #5
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As long as you're using an f body T56, LS1 flywheel and clutch, the smaller one will work.
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Old 03-20-2013, 01:39 PM   #6
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Thnks Gary - it's a GTO/Monaro box.
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Old 03-20-2013, 03:17 PM   #7
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We have the bearing you need in stock. You need the needle type. If you have a problem finding one, just let me know.
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Old 03-20-2013, 03:28 PM   #8
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Thanks Steve - I hope you ship to England! I'll be in touch.
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Old 05-20-2013, 06:33 AM   #9
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What bearing do I need with a 5.3 with ls7 clutch and flywheel with a 2000 Camaro? We have already broke the bellhousing twice and can't get it on. We have the pilot bearing still in from the t5 I was using before.
Thanks
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Old 05-20-2013, 07:43 AM   #10
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If you had a T5 behind a 5.3, that had the LS7 bearing that sits in the outer crank flange. If you're switching to an f body T56, you'll need the 98-02 f body bearing that seats in the inner crank flange.
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Old 06-06-2013, 12:14 PM   #11
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Isnt there bell housing spacers avaliable so that you can use the LS7 type bearing in a f-body? what would be the benifit of one over the other? I am trying to make the decission on which one i want to use right now
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Old 06-06-2013, 05:24 PM   #12
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Quote:
Originally Posted by maroonls1z View Post
Isnt there bell housing spacers avaliable so that you can use the LS7 type bearing in a f-body? what would be the benifit of one over the other? I am trying to make the decission on which one i want to use right now
Why on earth would you want to run a spacer just to use a different (incorrect) bearing? Just run the small LS1 bearing and be done with it.

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Old 06-07-2013, 05:29 AM   #13
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The spacers are generally used to run an LS T56 on a earlier gen BBC/SBC. A pilot bearing is about $12, spacer over $100. Pretty easy choice.
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Old 06-07-2013, 05:29 AM
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