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crank spacers??

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Old Jun 1, 2012 | 04:46 PM
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Default crank spacers??
i had a 6.0l and a th400 with the correct converter to go up against a sfi flywheel. and i didn't have a spacers i know certain years need them because of the longer and shorter cranks. im going to be getting a 5.3l is there any years that would need this spacer?
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Old Jun 1, 2012 | 05:40 PM
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The 1999-2000 6.0L's have the longer crank flange. The 5.3L never had the longer flange.
Last edited by Bo185; Jun 1, 2012 at 05:52 PM.
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Old Jun 1, 2012 | 06:32 PM
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Flat Flexplate Gm Part #12621399
Spacer 12563532
Bolts 12563533 x6

All available from your local GM dealership!
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Old Jun 1, 2012 | 07:12 PM
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so as long as my 6.0l wasn't a 99 or 2000 the 5.3 should bolt right up then?
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Old Jun 1, 2012 | 08:47 PM
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here is the set up i have now on the 6.0l. im going to be getting a 5.3l and i plan on using the TCI flywheel along with the same converter. will this all bolt up correctly?

















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Old Jun 1, 2012 | 11:21 PM
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That's the short crank flange 6.0l your good to go. Remove the dished 5.3L flex plate and run the flexplate you have it will all bolt together.
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Old Jun 2, 2012 | 06:03 AM
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thank you very much
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Old Jun 2, 2012 | 09:07 PM
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I got "peace of mind" by bolting it all up and checking for proper fit while it was on the ground where I could get to everything.
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Old Jun 3, 2012 | 08:40 AM
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Originally Posted by overhere
here is the set up i have now on the 6.0l. im going to be getting a 5.3l and i plan on using the TCI flywheel along with the same converter. will this all bolt up correctly?

















Looks like your flexplate has all the spacers built in.
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Old Jun 3, 2012 | 08:54 AM
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thank you
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Old Jun 3, 2012 | 09:26 PM
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That flexplate is, ummm, different... I'd mock it up for sure after seeing that.
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Old Jun 3, 2012 | 09:28 PM
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why do you say that? i had this all together running on my 6.0l. im thinking about getting a 5.3l was just wondering if i needed anything different to make it work.
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Old Jun 3, 2012 | 09:36 PM
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Originally Posted by overhere
why do you say that? i had this all together running on my 6.0l. im thinking about getting a 5.3l was just wondering if i needed anything different to make it work.
If you're talking to me... Your first post didn't say that it was a running setup, just that you "had it". Regardless, with use of non-stock parts, I always mock-fit everything first. Then when it goes in the car, it's there to stay.
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Old Jun 3, 2012 | 09:41 PM
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i was just wondering why you think its different? im no pro just wondering. could of been wrong all together. got it from someone else along with other parts.

thats my fault for not wording that better. thank you for your time and help.
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Old Jun 4, 2012 | 09:05 PM
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Originally Posted by overhere
i was just wondering why you think its different? im no pro just wondering. could of been wrong all together. got it from someone else along with other parts.

thats my fault for not wording that better. thank you for your time and help.
Google up some pix of a factory flexplate and the difference will be obvious.
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Old Jun 5, 2012 | 01:34 AM
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obvisously
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Old Jun 5, 2012 | 06:01 AM
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i realize its not a stock flexplate. its a sfi approved plate.
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