Pulley combo/blower RPM
Thread Starter
Joined: Aug 2007
Posts: 1,453
Likes: 2
From: Oceanside CA
Pulley combo/blower RPM Ok so I did a little searching and didn't really come up with much. I know that boost depends on efficiency and varies from setup to setup but I'm looking for a basic "starting" point. Setup is a forged lq4 based 370, Older style F1, PRC stage3 LS6 heads, cam close to spec's of EPP cam (just a touch bigger) and for now pace setter headders. I have a 7.25 crank pulley for now as well. I did the blower math and the 7.25 crank with a 3.85 blower puts me just a touch over the rated rpm of 70K. What boost levels would I possibly be looking at with that combo? I don't have my fuel system finished yet so I don't want to run over 16ish psi I think? Any advice or ideas? I plan on spinning the motor to around 6600-6800 and if something is giving me a problem max of 7000. I'm not afraid to spin her just a little over the rated RPM. Thanks
With a 408ci and an F-1A I was making 19 to 20 psi of boost. I'd say you're going to easily be in that range or more, at max impeller speed. Bob
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ATI ProCharger and Moser Sales 260 672-2076
PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com
https://brutespeed.com/ Link to website
