What is needed to get 8-9 psi out of a S-trim
06-19-2003, 05:58 PM
#2
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Location: Baton Rouge, LA, USA
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The following equation can be used to calculate boost after a pulley change if you know the boost before the change:
Boost after = Boost before * (old sc pulley / new sc pulley * new crank pulley / old crank pulley)^2
Mike
Boost after = Boost before * (old sc pulley / new sc pulley * new crank pulley / old crank pulley)^2
Mike
06-19-2003, 09:47 PM
#4
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Location: Bay Area, CA, USA
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Originally posted by LWM
And if the above is too complicated, just go for the 7" crank pulley, that will do the trick.
LWM
And if the above is too complicated, just go for the 7" crank pulley, that will do the trick.
LWM
The cheaper way is if you are running the 3.33" crank pulley now, you can just install in a 3.125" pulley. Used ~$35.
Make sure you are tune for the increase boost or else it will end up costing $5-7K.
cheers
06-20-2003, 10:16 AM
#6
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Location: Bay Area, CA, USA
Posts: 311
Originally posted by BOOST FED 95Z
On my old s-trim I ran a stock crank pulley and a 2.75 blower pulley and saw 10 psi. This was through stock heads and an aftercooler.
Scott
On my old s-trim I ran a stock crank pulley and a 2.75 blower pulley and saw 10 psi. This was through stock heads and an aftercooler.
Scott
Because when I was with my 350, I saw 10# with the 6" and 3.125" pulley setup going through a AFR 190's and a mild cam.
Then later on my 396 with the 6" and 2.75" I only see 6#.
--Hugh
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