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C6 Forced Induction/Nitrous
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Old 06-21-2013, 12:54 AM   #1
Jeffro_510
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Default Pulley swapping, need help with belt size?

I am swapping my crank pulley out, so i have to swap my blower pulley out to keep from over rotating.

Currently, the car has an 8 rib 3.125 blower, 8 rib 7.5 crank pulley setup.

I am swapping the crank to an 8 rib 8" IW pulley, and the blower will get an 8 rib 3.5 pulley.

I have the ECS bracketry, and a Paxton Novi2200SL head unit. The car is a 2005 LS2 Powered Vette.

Anyone else run the same setup and can get me a part number, or a length or some kind of help?

thanks in advance
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Old 06-22-2013, 02:28 PM   #2
mourat
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Maybe this will help:
http://www.vortechsuperchargers.com/page.php?id=33511

Basically see what Impeller speed was with your old setup, and new setup that should give you a good approximation of how big the belt needs to be.
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Old 06-23-2013, 01:25 AM   #3
Jeffro_510
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There is no info there on a belt length.

I have already figured out my blower rotation, and know i can run a 3.4 to 3.5 pulley. But I have no clue as to what belt i need to run one of those pullies.

i also don't know if ECS belt configuration/length is different than others either.
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Old 06-23-2013, 09:45 AM   #4
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I would call ECS and ask them...I'm sure they have tried that combo.
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Old 06-23-2013, 10:49 AM   #5
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How much boost are you seeing with that setup with the 2200sl
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Old 06-23-2013, 01:46 PM   #6
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With the 3.125/7.5 setup, i was seeing about 15psi, it may have been more, i ended up having a head gasket issue, where boost was getting into the cooling system
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Old 06-23-2013, 02:12 PM   #7
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This was on stock cube ls2, stock 243's, and stock ls2 intake. Very restricting top end. Car did make 745 to the wheel though.
With my new heads, i expect to see less boost, but make more power.
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Old 06-23-2013, 02:12 PM
 
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