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Old 08-15-2013, 02:45 PM   #1
bct10985
 
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ecs pulley sizes?

Anyone know the crank and blower pulley sizes for an ecs camaro kit? Was just wondering how fast my blower is spinning. Max rpm is 55,000 for a novi 1500. Was wondering if any of u guys that have the restrictor out have thought about pulleying it down, if possible, for even more boost.
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Old 08-15-2013, 04:53 PM   #2
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Did a little research. 7.5" crank and 3.3" blower pulley so according to vortechs calculator (assuming its the same) the blower is close to max 54xxx rpm if u shift at 5700. I overspun my old vortech s trim on a trans am. Anyone ever think about doin this?
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Old 08-15-2013, 05:59 PM   #3
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I think most people over spin those with no problems. Shifting at 5700 is weak. Take it up to 6800-7000.
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Old 08-15-2013, 06:01 PM   #4
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I overspun my ysi without issue. Other than more power...
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Old 08-15-2013, 10:59 PM   #5
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ECS uses the smallest/efficient pulley possible. I run without the restrictor plate with no problems. You can pulley down, but it won't help at all. The blower becomes more inefficient and, if I recall, Matt did it already and it raised the IAT's. The next step would be to go to a different blower, which would be the YSi.

Over the winter months, that is one of the things that I plan on doing.
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Old 08-19-2013, 03:10 PM   #6
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I am more comfortable with over spinning the oil fed units like the YSI, but the self contained units I would not recommend going too much over the recommended RPM.
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