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I am going to 12lbs.. i will have a 5% pulley on the bottom
any idea how to figure the pulley size?
i am 8lbs right now with stock pulley and upper i believe is 3.2
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How To Pick The Blower Size Pulley
Started by us1champ, Jan 14 2016 07:47 PM
5 replies to this topic
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#2
Posted 14 January 2016 - 09:25 PM
Hemi31
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BFNY Performance
2.75.....I usually see 2 psi per 1/4 inch with a 5% OD.
BFNY Performance
9515 Detroit Rd
Cleveland Oh 44102
440-787-7235
Engines, Transmissions, Differentials, In house dyno tuning, general maintenance to full builds.
"Horsepower is how fast you hit the wall, torque is how much of the wall you take with you."
#4
Posted 14 January 2016 - 10:38 PM
HighHorseman
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Senior Jack Wagon
What kind of blower are we talking about and on what combo? In this range I usually use the 1psi per 1/10th of an inch method for a ballpark number and add 1psi for every 5ish % OD you add to the crank. Conservatively a 2.9 upper would be my first pulley to try out without knowing anything about what the build is.
#5
Posted 15 January 2016 - 05:30 AM
us1champ
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Senior Jack Wagon
Is going to be a stock block 6.1 would drop in Pistons and rods in stock compression 5% overdrive pulley Magnuson supercharger
Currently I'm a stock motor right now with the Magnuson and 8 pounds of boost on the stock crank pulley and I believe the uppers 3.2
Currently I'm a stock motor right now with the Magnuson and 8 pounds of boost on the stock crank pulley and I believe the uppers 3.2
#6
Posted 15 January 2016 - 07:10 AM
Hemi31
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BFNY Performance
2.75 just did this combo
BFNY Performance
9515 Detroit Rd
Cleveland Oh 44102
440-787-7235
Engines, Transmissions, Differentials, In house dyno tuning, general maintenance to full builds.
"Horsepower is how fast you hit the wall, torque is how much of the wall you take with you."
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