Running at 1500RPMs: What oil pump is needed??

it won't hurt to run a high volume oil pump ,
or a standard pressure and volume BBC oil pump on a SBC,
especially in a car/truck, that rarely exceeds 4500 rpm,
other than it may cost you 1-2 peak hp.
yeah the newer oils have advantages but they also cost more and you still need oil/filter changes about every 15 k miles.
swapping to a 7-8 quart baffled oil pan is generally a good idea

I followed This advise.. My 383 sbc carried 50lbs oil pressure steady using the standard BBC pump.
Just make sure you use the correct pump shaft and measure and verify the end play . Adjust the pick up so it is 3/8" off the pan floor
as stated above.

If your .004 in the hole @TDC ....I would choose a Cometic .035 MLS head gasket for the correct quench.
 
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Once I get the corrected and checked and good to go reassembled short block back I plan on running a BBC oil pump and will mount the pickup as advised and have to machine shop weld it to the pump.

As my 383 in going in to a 93 Chevy Van I was advised that adding a oil cooler will add one to two QTs of oil and adding a dual external oil filters will also as a bout two QTs of more oil. So that is a easy 6 more QTs of oil and they are off the engine so adding cooling to the mix.

Question;
I followed This advise.. My 383 sbc carried 50lbs oil pressure steady using the standard BBC pump.
Just make sure you use the correct pump shaft and measure and verify the end play . Adjust the pick up so it is 3/8" off the pan floor
as stated above.

If your .004 in the hole @TDC ....I would choose a Cometic .035 MLS head gasket for the correct quench.
As I am running Rhoads lifters, they are stated to allow bleed off and thus lower lift and duration until 3500, in a standard SBC at which point the are running the full cams profile.

I am told they are controlled by the pressure, but I think by volume as well as they lose the time to leak down at higher RPMs.

Sadly I cannot find articles detailing the oil pressure VS lifter pump up rates. One articles of a dyno test does show the lifters tamed a will cam with a high volume pump making 65PSI hot, but again no RPMs were stated as to when that 65PSI was produced.

So I ask what was/is your oil pressure at start up, then warmed up, at idle and at say 1500, 2000, 2500 and 3000??

Rich
 
Well... The engine we built is full race... It uses Rhodes lifters also. On first start up the pressure is 60 psi.
Now. I am also using VR1-20-50 oil, so it is a bit thicker. But at full temp, the pressures maintain 50psi
at idle and raise about 5 psi at higher RPM'S.
 
YES. I like them

That is very good news. Rhoads said they are controlled by pressure, and if I want them to pump up sooner, from 3500 to 3000 I should run thicker oil. As you engine has both high pressure from idle and thick oil, I can figure it is more a function of response time than oil pressure and viscosity.

Thanks again.

Rich
 
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