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Whipple Pulleys/Boost Psi?

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Old 08-09-2005, 07:17 PM
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Default Whipple Pulleys/Boost Psi?

Can someone tell me what ( WHipple) Pulleys ( Size wise) equal what # of boost on a 6.0. Buddy of mine has a whipple and wants to know. Thanks
Old 08-09-2005, 07:21 PM
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Originally Posted by 03sierraslt
Can someone tell me what ( WHipple) Pulleys ( Size wise) equal what # of boost on a 6.0. Buddy of mine has a whipple and wants to know. Thanks
3" 10-11 psi 3.25" 9 psi 3.5 7-8 psi it really depends on you motor, exhaust, heads ect but this should give you a ball park. How much boost does he want to run.
Old 08-09-2005, 07:57 PM
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He wants to run 8psi, Currently his pulley is like a 4in. he doesnt have a boost gauge.
Old 08-09-2005, 08:14 PM
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Originally Posted by 03sierraslt
He wants to run 8psi, Currently his pulley is like a 4in. he doesnt have a boost gauge.
Yeah a 3.5" pulley made 8 psi on my 5.7Ls1 and you can get it from whipple for about $60
Old 08-09-2005, 08:50 PM
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Well then what is a 4in
Old 08-09-2005, 08:56 PM
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Originally Posted by 03sierraslt
Well then what is a 4in
I would say about 5psi.
Old 08-10-2005, 12:54 PM
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3 1/8" on my '00 6.0 gives 6 psi at peak. Whipple told me that each 1/8" smaller gives one more psi. I installed a 2 5/8", it was supposed to make 10 psi, it buries my 10 psi guage, probably makes as much as 12 psi. I need a larger pulley and a larger boost gauge.
Old 08-10-2005, 06:06 PM
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Originally Posted by MikeGuyver
3 1/8" on my '00 6.0 gives 6 psi at peak. Whipple told me that each 1/8" smaller gives one more psi. I installed a 2 5/8", it was supposed to make 10 psi, it buries my 10 psi guage, probably makes as much as 12 psi. I need a larger pulley and a larger boost gauge.
Yeah you probley have the two belt setup. I know my crank pulley size is a 7.5" and I think yours is like a 6.5"?
Old 08-10-2005, 09:18 PM
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Originally Posted by Yellowsierra
Yeah you probley have the two belt setup. I know my crank pulley size is a 7.5" and I think yours is like a 6.5"?
Two belts, haven't measured crank pulley yet, I will if you need to know.
Old 08-10-2005, 10:52 PM
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MikeGuyver, what are you doing for cooling if you are running approx. 12psi? Intercooler? Meth?


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