FrontEngineDragsters.Org Forum
Technical => Spud Miller's Cave => Topic started by: JeffV8 on May 23, 2016, 11:33:08 AM
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I'm running a 331 Chrysler hemi in my falcon. I have a 6-71 blower and 4 port Hilborn. This will be a street driven car most of the time. Question is what size pulleys to use?? Plus what pitch to use.
Thanks
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with the theme of your car I would run 1/2" pitch, maybe a 36 on top and a 32 on the bottom 11%UD or 35/32 8.6%UD
Not sure of your compression or fuel you would be running
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I'm guessing around 8:1 for pistons and run on gas. I was thinking 1/2" pitch.
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I'll bet you'll be fine with Paul's recipe. For a little more boost you might consider a MSD boost retarder. Mine allows me to run mid grade gas in my street rod. An 8-71 at 1 to 1 on a 525 BBC.
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i think 6% under driven would be a good start
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Thanks for the info 👍
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Do all 671 snouts have 1 hole that is off set. Do I have to elongate the hole on the pulley or just run 5 bolts.
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I believe Weiand is the only company that uses the offset hole use all 6-bolts just elongate the one hole
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That figures. I get the oddball snout. Thanks Paul.