F1C procharger impeller speed
07-15-2008, 05:46 PM
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F1C procharger impeller speed ok building my 402 engine. right now i have a 7 inch crank pulley (I think ITs the one from procharger for gto kit) with 4.75 head unit pulley whats the impeller rpms at 7k? what size head unit pulley would max the impeller speed at 7k engine rpms?
I know a very ruff gueses what pulley would you put on to get 16-18 psi on a 402 build? wheres a save redline for a 402 engine and impeller hold it closer to 70k max?
I know a very ruff gueses what pulley would you put on to get 16-18 psi on a 402 build? wheres a save redline for a 402 engine and impeller hold it closer to 70k max?
07-15-2008, 05:52 PM
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Impeller speed = Crank DIA / Pulley DIA x step-up (f1c = 5.40) x max rpm of crank.
The 7.00 in GTO crank pulley will hinder you on belt slip, i would try to get a custom 8.0in made up so you can run a bigger pulley up top. Also you may consider adding a another idler right under the blower pulley to aid in belt wrap and keeping the long run of belt from slapping around during a pull.
The 7.00 in GTO crank pulley will hinder you on belt slip, i would try to get a custom 8.0in made up so you can run a bigger pulley up top. Also you may consider adding a another idler right under the blower pulley to aid in belt wrap and keeping the long run of belt from slapping around during a pull.
07-16-2008, 08:37 AM
#3
Impeller speed = Crank DIA / Pulley DIA x step-up (f1c = 5.40) x max rpm of crank.
The 7.00 in GTO crank pulley will hinder you on belt slip, i would try to get a custom 8.0in made up so you can run a bigger pulley up top. Also you may consider adding a another idler right under the blower pulley to aid in belt wrap and keeping the long run of belt from slapping around during a pull.
The 7.00 in GTO crank pulley will hinder you on belt slip, i would try to get a custom 8.0in made up so you can run a bigger pulley up top. Also you may consider adding a another idler right under the blower pulley to aid in belt wrap and keeping the long run of belt from slapping around during a pull.
