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Old 11-09-2010, 12:02 PM   #4
lewylew

 
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Drives: 2010 ZL550& 2021 C8 Z51
Join Date: Feb 2010
Location: Near Philadelphia
Posts: 1,577
I would keep it under 10 PSi without the meth. With the meth you should be alright upto 12 or a little more. SuperchargedSS is running 12.5 on stock bottom end. I am no expert though.

I would like to know the answer to your original question about the overdrive pulley as well
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