3.33" to 3.12" pulley - Page 2 - MustangForums.com

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3.33" to 3.12" pulley

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Old 05-18-2009, 12:54 AM
  #11  
2000AZ5.0GT
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he says 3.33"
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Old 05-18-2009, 12:57 AM
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lizzyfan
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Originally Posted by 2000AZ5.0GT View Post
he says 3.33"
Well I was running a 3.1 at 13 psi and after intercooler install dropped to 9psi, so 7 is about right
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Old 05-18-2009, 01:00 AM
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2000AZ5.0GT
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wow? that big of a drop? I thought most advertised a 1-1.5PSI drop at most?
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Old 05-18-2009, 01:07 AM
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Originally Posted by 2000AZ5.0GT View Post
wow? that big of a drop? I thought most advertised a 1-1.5PSI drop at most?
Nope, dropped 4 psi and stepped up to a 2.87 to bring it back to 13psi
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Old 05-18-2009, 12:23 PM
  #15  
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do you get belt slip with a 2.87" pulley? I have one but I heard you can't go below a 3" pulley without belt slip.
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Old 05-18-2009, 01:00 PM
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Originally Posted by vanquish View Post
do you get belt slip with a 2.87" pulley? I have one but I heard you can't go below a 3" pulley without belt slip.
No belt slip I am running a Gates from NAPA 25-061115, Fits perfectly!
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Old 05-18-2009, 01:36 PM
  #17  
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Originally Posted by lizzyfan View Post
No belt slip I am running a Gates from NAPA 25-061115, Fits perfectly!
Wow I would have figured you have belt slippage under 3 do you drive her much?
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Old 05-18-2009, 01:58 PM
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Originally Posted by 2000AZ5.0GT View Post
what else do you have done to your car?

7PSI at 370rwhp is pretty damn efficient.
He lists blower cams in his signature.
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Old 05-18-2009, 02:16 PM
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Originally Posted by Eagle2000GT View Post
He lists blower cams in his signature.
He's talking about me...
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Old 05-18-2009, 09:09 PM
  #20  
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Originally Posted by lizzyfan View Post
Well I was running a 3.1 at 13 psi and after intercooler install dropped to 9psi, so 7 is about right
sounds like exactly what happened to me. Made 8 lbs non intercooled on 3.6. I added an A/A intercooler and a 3.33 pulley and only made 6-7lbs. Put a RR 2.9 pulley on and now make 11ish.
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