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1991 Ford Mustang LX
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Discussion Starter #1
Im helping a friend of mine put together a street/strip engine and Ive got a question about the oil pump.The engine is a 306,forged flat top pistons,crank has been turned and polished .10 under with 10 over bearings,stock rods,then the typical 350 hp bolt on trick flow package.This car will be mainly street duty with your every other weekend trip to the strip.Is a stock volume oil pump plenty for this engine or will there be any reason to install a high volume pump?Are there any downsides to installing a high volume pump on this package.Thanks for the help
 

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Stock volume is more than fine. Just inspect it when you get and make sure there are no little piece of metal inside, oil up and go.
 

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1991 Ford Mustang LX
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Discussion Starter #3
Is the following statement true or false.High volume pump installed on this motor will cause oil starvation to the main bearings?
 

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no, I have a 306 that I built and I have a HV oil pump and at operating temp I have 46 psi of oil pressure @ idle and like 60 psi @ WOT. I also have a 7 qt moroso oil pan too...
 

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a good rule of thumb is 10psi per 1000rpm.a stock pump will be more than enough.but a h.v. wont hurt eitheroldguy.gif
 

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1991 Ford Mustang LX
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Discussion Starter #6
Good.Il go ahead and put a hv pump in it then.Ive seen a few engine builders put oil restricters between the cam and main bearings before.Seemed like if one is using a hv pump without a 7 quart oil pan,the pickup might run low on oil during high rpms,but I guess there would be alot of blown motors,if that was the case
 

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the oil restrictors are for solid lifter cams.
 

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1991 Ford Mustang LX
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Discussion Starter #8
Thats too bad.Seemed like it would be a good ideal
 
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