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Discussion Starter #1
I did a search and asked around and coudnt find the answer I was looking for. I have a BBC 540 with a 400 shot of dope on it and need a vacuum pump. I can get my hands on a 22640 Moroso pump new for a steal but is it gonna pull enough vacuum on the big end. I spin the motor to 7500, it has C&A standard tension gapless rings and 13:1 comp.
Any body run this pump on a similar combo?
 

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Go with a 4-vane pump.
 
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