Sbc oil pumps?

[oldgold]

We had a dart block Mod motor with a 9 quart champ pan the guy put a a high volume pump on and burned it up....He built drag motors not circle track, we turned it 8,500 she burnt up lol We always ran the non high volume stuff We dunno why he changed it but it didn't work for us.....

so didnt this motor have 80-90 lbs of oil pressure? would it have survived with just a std volumn pump and have enough oil pressure.? i guess i have always been worried about racing my pure stock motor at 6000 with 45 psi oil pressure and zero when pulling off the track after the race.we also run hydraulic lifters and they clatter when the oil pressure is zero to 10 psi after the race.

[dynoman14]

I guess I will go ahead and post as I feel CNC is getting attacked by the peanut gallery that wouldn't know if their line bore and cam tunnel bore was off or not and certainly not have a clue on how to measure it.
I am pretty sure CNC and I have dis-agreed on a couple things in the past but that is the only way to have and intelligent discourse and learn something. I have seen some of his work on an engine rebuild and the block work was accurate and meticulous.

That being said, I don't think a guy has a big head just cause he knows his work is perfect...I am pretty proud that I can build head machines that have consistent valve-job run-out in the .0001" range. Most folks don't know how and don't know where to find the stuff to measure run-out that minimal, so I think it is pretty significant. And yes I have folks out there to prove it as I have listed 10+ of the top Cylinder Head guys in the world that use my Cylinder Head tooling and machines.

As far as the oil pump question goes, I have been HV/HP Melling pumps in almost every wet-sump engine I have built in the last 20 years and have never pumped a pan dry. You don't use them right out of the box as there is a couple hours of cleaning up and blu-printing to do, but after that they are good to 7500 rpm and 650HP capable. I even had a couple mule SB-2 Practice engines I built as wet-sumps just cause folks said it couldn't be done...guess I am just to dumb to know why it would not work as the engines ran at Charlotte, Daytona, Talladega, Nashville & Atlanta with no problems.

I seem to remember back in the 60's they ran on 426 Hemi's, 409 Chevys, and Ford Semi-Hemis and Tunnel Ports.

[7uptruckracer]

Dart tells you to run the block we run with a standard pump. Because it has primary oiling, that's one thing I don't get why do people run the after markets over the GM stuff is it because of this or quality, or cost vs machining cost of a GM? And apparently it did have high OP I wasn't the driver of this one just the setup guy for it. I truly know nothing about motor just find the oiling topic interesting and always trying to learn more, and want to know what I have in the cars i race or work on to make sure the right pieces are there.