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Old 01-04-2015, 10:42 AM
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i'm putting a 5.3 into a '94 bird. i've got a LS1 water pump, LS1 PS pump, the stock alt. for the motor (LM7) and stock crank pulley. will the LS1 pumps work without spacers? or would it be easier to change the crank pulley?
Old 01-04-2015, 10:55 AM
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What alt/PS pump bracket do you have?
Old 01-04-2015, 02:12 PM
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LS1 f-body
Old 01-04-2015, 02:27 PM
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would swapping to a LS2 crank pulley fix my problem.
Old 01-04-2015, 03:15 PM
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Run a f body/GTO LS1 crank pulley, accessory bracket, PS pump, etc. An LS2 pully could be from a vette (wont work), or GTO (will work).
What are your plans for AC?

Last edited by garys 68; 01-04-2015 at 03:41 PM.
Old 01-04-2015, 07:05 PM
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awesome, then the pulley swap it is. a friend has one off his GTO.

don't have AC.
Old 01-04-2015, 07:09 PM
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do i need to get a new LS1/LS2 crank pulley bolt? or can i reuse the one on the 5.3 crank?
Old 01-04-2015, 11:13 PM
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That's a single use TTY bolt. Buy a new one, use the old to pull the pulley in place.
Old 01-05-2015, 04:44 AM
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will do, thanks for your help!



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