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12-23-2012, 05:45 PM
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#1 |
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Upper OD pulley
I do not understand why the 2.85 upper pulley at Jannetty is OD? The chart says it is stock.
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12-23-2012, 05:47 PM
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#2 | |
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12-23-2012, 05:53 PM
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12-23-2012, 05:55 PM
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#4 |
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Here is the pulley. http://jreperformanceparts.com/gm/20...er-pulley.html
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12-23-2012, 06:04 PM
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#5 |
Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,824
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smaller pulley on the supercharger increases the rpm and boost...just as the larger crank pulley/hub does the same
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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12-23-2012, 06:14 PM
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Changing the upper would be better to get 5% over rather than the bottom going though all that work, also warranty the upper would not look different. Anybody know what the OEM size upper diameter is? |
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12-23-2012, 06:49 PM
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#7 |
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Drives: '21 ZLE A10 Join Date: May 2012
Location: Mechanicsville, VA
Posts: 6,824
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stock upper is 3.0" according to Lingenfelter charts...http://www.lingenfelter.com/sites/li....0%20small.pdf
Scroll down to page 7
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'21 ZLE A10 Wild Cherry PDR 2:00.78 VIR Full 10.68@131.69 1.68 60'
'17 ZL1 A10 Mosaic Black PDR/Nav 2:03.08 VIR Full 11.003@129.2 1.75 (sold) '15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold) '12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold) |
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12-23-2012, 06:50 PM
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