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Discussion Starter #1
Building a Dart sbf blower motor, going in my 95 cobra street car. Its something i drive seasonally, set up for handling (coilover suspension, 14" brakes, etc etc).
RPM range is idle to 6500 MAX. All good parts (crank I worked over, custom Wisco pistons, my design hyd roller cam, worked High Ports, etc). The blower is a low boost deal. Basically a fun car that I can track drive but still be very streetable.

Question is on the oil pump relief spring. I am using an Ed Curtis worked std volume melling pump, and it comes with an optional bypass spring that increases bypass pressure. Its green in color. (BTW I am using a Canton road race pan with scraper and windage tray I fabricated.) Should I use the optional spring?

Maybe Ed will see this an respond. Any other experiences or thoughts appreciated.
 

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Probably a Mellings pump. Are there any numbers on it?

If it's a Mellings pump, there should be about a 10psi difference between them. Roughly 60 and 70psi. What pressure are you looking for?
 

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LOL
 

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Discussion Starter #5
Probably a Mellings pump. Are there any numbers on it?

If it's a Mellings pump, there should be about a 10psi difference between them. Roughly 60 and 70psi. What pressure are you looking for?
Yes as listed its a mellings std vol pump 10687 tweeked by Ed Curtis at Flowtech Induction. Since the blower is self contained on oiling, the rev range is likely to never see north of 6500, hyd roller, and standard main clearances, I am thinking the std spring will be fine. I have never used an SHP block before, only the Sportsman (and several variants of Ford Racing blocks), so not sure if the oiling system affects things much.
 
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