Whipple Pulley Issues - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

HufferSS · 08-30-2011, 05:10 PM

Curious what pulleys you guys are using to get what boost. I know this is a very imperfect science but I am sure the answer is here or close at least.

My car has LTs, Rotofab and a blower cam. On the 3.875" pulley it only produced a whisker over 7.5 psi. I want to see at least 10 if not 12 psi....what size pulleys are you running to get what boost on a similar combo? We have two more pulleys on order....just curious what you are seeing on your combo on what size pulley etc.

Any thoughts.......also interested to hear what you are running for timing in your tune as well.

Thanks.

Hendrix-Engineering · 08-30-2011, 05:20 PM

Keep in mind the cam changes your boost level compared to the stock cam..Dont get hung up on a boost number i would stop at 600rwhp with a stock motor

jrpxxii · 08-30-2011, 05:29 PM

Also remember that long tubes will take 2psi out of it as well.

HufferSS · 08-30-2011, 05:36 PM

Quote:

Originally Posted by Hendrix-Engineering

Keep in mind the cam changes your boost level compared to the stock cam..Dont get hung up on a boost number i would stop at 600rwhp with a stock motor

Nah.

shines · 08-30-2011, 10:53 PM

Quote:

Originally Posted by HufferSS

Curious what pulleys you guys are using to get what boost. I know this is a very imperfect science but I am sure the answer is here or close at least.

My car has LTs, Rotofab and a blower cam. On the 3.875" pulley it only produced a whisker over 7.5 psi. I want to see at least 10 if not 12 psi....what size pulleys are you running to get what boost on a similar combo? We have two more pulleys on order....just curious what you are seeing on your combo on what size pulley etc.

Any thoughts.......also interested to hear what you are running for timing in your tune as well.

Thanks.

I have a 3.65" pulley and get only 8lbs, but that's on a 419 stroker with a blower cam, ported heads, and LT's.

HufferSS · 08-31-2011, 12:25 AM

We have the 3.5" pulley on order....so should be about right.

08-30-2011, 05:10 PM	#1
HufferSS I Wanna Go Faster!! Drives: 2011 2SS Synergy Green M6 Join Date: Apr 2011 Location: SC Posts: 3,323	Whipple Pulley Issues Curious what pulleys you guys are using to get what boost. I know this is a very imperfect science but I am sure the answer is here or close at least. My car has LTs, Rotofab and a blower cam. On the 3.875" pulley it only produced a whisker over 7.5 psi. I want to see at least 10 if not 12 psi....what size pulleys are you running to get what boost on a similar combo? We have two more pulleys on order....just curious what you are seeing on your combo on what size pulley etc. Any thoughts.......also interested to hear what you are running for timing in your tune as well. Thanks.

08-30-2011, 05:29 PM	#3
jrpxxii Drives: 2010 Camaro SS/RS 427ci Join Date: Jul 2009 Location: Bowling Green, Ky Posts: 3,355	Also remember that long tubes will take 2psi out of it as well. __________________

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08-30-2011, 05:20 PM	#2
Hendrix-Engineering Account Suspended Drives: First 9 inch-12 bolt IRS Camaro Join Date: Jun 2009 Location: nc Posts: 1,835	Keep in mind the cam changes your boost level compared to the stock cam..Dont get hung up on a boost number i would stop at 600rwhp with a stock motor

08-31-2011, 12:25 AM	#6
HufferSS I Wanna Go Faster!! Drives: 2011 2SS Synergy Green M6 Join Date: Apr 2011 Location: SC Posts: 3,323	We have the 3.5" pulley on order....so should be about right.