Sbc oil pumps?

[jsf74]

What are people using for oil pumps now. I building 383 turning 7200 in a stock block. Would like to stay with a cast unit that does not cost a fortune.

[Ferg58]

Milodon 18750 5/8 sump inlet - 18770 3/4 sump inlet

[stockcar5]

melling 10552c

[usafracer]

m55 is all I have ever run and have had ZERO failures due to no oil!

[jsf74]

Why a Standard volume high pressure as opposed it hv lp? Or both high volume high pressure?

[usafracer]

High volume just uses horse power. You will have plenty of pressure with the standard pressure.

[Ferg58]

@usafracer, how much HP loss?

[DANNY]

High volume just uses horse power. You will have plenty of pressure with the standard pressure.

I second the above question. What kind of losses? Is this also with oil restrictors in place or not with a flat tappet application?

[DANNY]

hv is harder to turn costing you hp, also it moves more oil than needed so it builds excess heat in your oil pushing it around more. this is all common sense.

Wonder if that's the issue I had with a motor after I switched to synthetic the pressure would drop when oil got hot (running mix of xp3 and xp6) on the m55hv pump no restrictors. Figured it was bypassing in the pump.

[DANNY]

Lmao!!! Ya it was on that exactly, I had only put on roller rockers on the last couple races I ran that motor. Std it is, any issues running that with a 20w50 type of oil mixture?

[Ferg58]

This was going to be in a motor turning 7200. If you guys want to put a stock pump in yours go ahead. I wouldnt do that in a motor turning that many rpms. M55hv pumps were junk a few yrs ago. the ended up in the broken in the bottom of the pan. Opinions are like a$$holes, everyone has one.

[Dirtrunner35]

14 years using m55hv pumps, no problems 20_50 oil

[DANNY]

14 years using m55hv pumps, no problems 20_50 oil

I have used the same that's why I'm so like Wtf lol...?!?!?

Guess I'll ask the builders around what they use here as we get a little warmer in the summers then most of the Midwest, heat races at 110* suck.
I know most use 5w50 to 20w50 for oil. Called me crazy when I put 10w30 in lol.

I do understand as clearances get tighter and oil gets better that there is no need for gallons of oil to flow as before, just clairify one vs the other.

Any builders on here wanna chime in would be appreciated, basically I'm running an equivalent to a 365 A mod motor turning 7000-7500.

[rsawyers9]

We run a 355 to 8200 every night with a regular m55 pump pushing Brad Penn. No oil pressure problems whatsoever. Our builder doesn't build anything with a hv pump.

[CNC BLOCKS]

Biggest pump I use is a 10552 and the smallest pump is a DRLV Drag race Low volume pump with great results.

Under race conditions if I have 60 to 70 pounds I have more then enough volume, HV pumps do raise oil temps over a std. volume pump, When the oil is being bypassed it just goes around and around in the pump till it can be used its creating heat and it does whipped the oil up as well.

HV pumps do cost HP.