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cleanmchn 03-25-2012 05:01 PM

The Booze Runner
We have a 383 stroker motor with a 671 gm blower on it. It has two
750 Holley blower carbs on it. It has a 32 tooth bottom pulley and we want
to have 10 to 15 pds of boost. What top pulley do we need. Anyone

68NovaSS 03-25-2012 05:52 PM

2 Attachment(s)
Here's some reading material for you. You plan to run 10 to 15 pounds boost, on the street or track only? Fifteen pounds with a roots blower is a whole lot of boost for a street motor, especially with todays pump gas. Figure out your static c.r. then take a look at what your effective c.r. will be with that much boost.

It sounds like you have an older 1/2" pitch setup, not the 8 mm. There are pulley combos you can use to get wherever you want to be, swapping up and down, etc. There are charts in the attachments.

cleanmchn 03-25-2012 06:47 PM

The Booze Runner
Thank You for your reply.

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