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SLP underdrive pulley

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Old Sep 16, 2006 | 01:46 AM
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Default SLP underdrive pulley

have a buddy selling one, but i dont know if it is worth the $$ or not. not lookin for big gains, just wanna get a few small things done. already have longtubes and ls6 intake. Search is down, so i thought i would post this up. thanx for the help.
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Old Sep 16, 2006 | 07:53 AM
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it should give you 8-10hp. Make sure you get a new crank bolt, and it will take a smaller belt.
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Old Sep 16, 2006 | 03:29 PM
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LS1howto.com's camswap section has a writeup for the pulley change. You will need a longer bolt or a threaded rod/bolt/washer to get the pulley started back on so you don't strip the crank.
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Old Sep 16, 2006 | 03:44 PM
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are they easy to install?
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Old Sep 16, 2006 | 04:09 PM
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Originally Posted by Ls1CamaroGuy87
are they easy to install?
Sometimes. Mine came off without a hitch using a puller rented front vatozone, but some people have problems. Some people have to call in the national guard and cast a spell on their crank bolts before they come out.

Putting the pulley in the oven at about 250-300* helps with install as well.
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Old Sep 16, 2006 | 06:35 PM
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Originally Posted by cav101
have a buddy selling one, but i dont know if it is worth the $$ or not. not lookin for big gains, just wanna get a few small things done. already have longtubes and ls6 intake. Search is down, so i thought i would post this up. thanx for the help.
IMO if you're going through the trouble of installing the pulley, you may as well stick a cam in it as well....and an oil pump...and a new timimg set.
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Old Sep 16, 2006 | 06:41 PM
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thanx for the tips...i may just do that. this is just for my driver....but im sticking a turbo'd LSX into my 67 firebird, so this is all just practice
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Old Sep 16, 2006 | 07:08 PM
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shevrolay has a good point that would be a smart idea ge the cam and install it while your down there.
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