i have a question i badly need answered i keep hearing that if you use a high volume oil pump witha stock oil pan you'll suck the oil out of the pan to fast and then you'll runthe engine dry because you the oil isn't getting back to pan fast enough. is this true ? i'd really like to use one in the 400 i'm building but im scared to.. please help?!

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1989 firebird formula

Mods: converted from T.B.I. to a carburator 305 to a 350. Flowmater exhaust,hedman shortie hedders,202 heads,350 horse cam,bored.40 over, Edlebrock torker2 intake.

Future mods performer rpm air gap intake (polished) and 600 edlebrock carb, comp roller cam, and way better headsa 400 defintely in the works!

 

I recently saw a tech/question article in one of the Vette mags about the same thing.

According to the article, Vettes, even with their 5 quart oil pan, comes from the factory with a HV oil pump. The article further stated that oil pressure should be 25 psi at idle, hot, synthetic oil (although the oil weight wasn't listed).

Further that some guys have made the mistake of using the passenger car pump which only puts out 15 psi at idle.

I'm running a HV/HP pump in my 415 and just bought a Melling HV/HP for the 355 I'm selling to a guy.

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1986 Corvette Coupe, 415 CID, Edelbrock 6073s, ZZ9

 

This is a question for Jake. I was wondering if you used the stock diameter small block pickup tube with your HV/HP pump, or if you used the 3/4" big block tube? I've seen pumps that recommend the 3/4 tube, and others that say just to use the regular size tube.

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89RS w/350 TPI; 69RS/SS w/450 HP 350/Muncie 4-Speed "Too weird to live, too rare to die."