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Old 10-12-2013, 07:04 PM   #1
Supermaro54
 
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Safe boost levels on 2.9 whipple?

What's a safe boost levels for a 2.9 whipple on 91 octane? I'm currently running a 3.5 pulley at 13.7lbs of boost. Looking at going with a 3.25 any idea what that pulley would put me at? Thanks
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Old 10-12-2013, 07:16 PM   #2
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Each 1/8" is 2 lbs I believe. The info is on whipples website... But your not stock bottom end are you? Then it could be different.
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Old 10-12-2013, 07:28 PM   #3
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Quote:
Originally Posted by Caswell239 View Post
Each 1/8" is 2 lbs I believe. The info is on whipples website... But your not stock bottom end are you? Then it could be different.
9.7:1 compression, CNC LSA Heads, LTs, no cats, TPIS 102 and I believe 10%OD crank. Trying to figure out if I should go 3.375, 3.25 or just leave as is.
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2007 TBSS, forged 6.2, 2.9 whipple 666rwhp/604rwtq
1999 Camaro SS, 497rwhp/446rwtq
1987 Camaro Iroc-Z, 431rwhp/429rwtq smog legal sbc
1968 Camaro SS, 3.3 twin screw 427 ERL in the works.
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Old 10-15-2013, 11:39 PM   #4
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I guess a better way of asking is will a 3.25 blower pulley with a 10%OD crank be safe on the blower? Thanks
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2007 TBSS, forged 6.2, 2.9 whipple 666rwhp/604rwtq
1999 Camaro SS, 497rwhp/446rwtq
1987 Camaro Iroc-Z, 431rwhp/429rwtq smog legal sbc
1968 Camaro SS, 3.3 twin screw 427 ERL in the works.
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Old 10-17-2013, 11:39 AM   #5
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Max blower speed is 18,000. I'm sure whipple has a formula on their site. It also depends on how high your revving.
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Old 10-17-2013, 12:46 PM   #6
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Quote:
Originally Posted by CyberPredator View Post
Max blower speed is 18,000. I'm sure whipple has a formula on their site. It also depends on how high your revving.
Exactly.

It's more about the maximum blower speed in this application.
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Old 10-17-2013, 12:48 PM   #7
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http://www.whipplesuperchargers.com/...sp?ProdID=1162
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