Thread: oil pump pickup??? help

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I run high volume pumps on every SBC I build and never had a problem. Good pressure at 7000 rpm on the wilder ones. Just clean up the drain back holes in the block and heads. Painting the valley helps too, maybe, never done it but heard lots of guys swear by it.
Chevys have a little bitty pump stock, anything is an improvement. The hi-vo pumps don't flow any more than a stocker once the relief valve opens, the main benefit is at lower revs before it opens.

Originally Posted by R Pope

I run high volume pumps on every SBC I build and never had a problem. Good pressure at 7000 rpm on the wilder ones. Just clean up the drain back holes in the block and heads. Painting the valley helps too, maybe, never done it but heard lots of guys swear by it.
Chevys have a little bitty pump stock, anything is an improvement. The hi-vo pumps don't flow any more than a stocker once the relief valve opens, the main benefit is at lower revs before it opens.

Again I would never run a stock pan with a hi-volume pump.
Even a 7.50 bracket car with a good suspension will tend to un-cover the oil pump pick-up when the car leaves.
I will take a stock pump and shim the spring and de-burr the rotors and make sure I have the right amount of end play.
If I had a 7qt. fully baffeled pan then of course I would run a hi-volume pump.
The old paint the lifter valley trick is very risky.
I would rather spend the time to open up all the return holes and do some polishing.

Originally Posted by R Pope

I run high volume pumps on every SBC I build and never had a problem. Good pressure at 7000 rpm on the wilder ones. Just clean up the drain back holes in the block and heads. Painting the valley helps too, maybe, never done it but heard lots of guys swear by it.
Chevys have a little bitty pump stock, anything is an improvement. The hi-vo pumps don't flow any more than a stocker once the relief valve opens, the main benefit is at lower revs before it opens.

I've done clean up on the drain back holes and painted the valley before.I used a glyptal paint that is used on electric motors,it can withstand the heat and it dries to an epoxy like finish. I tore one of the engines down for a rebuild last year and not a speck of paint had come off, and this engine had been ran really hard.

On the other hand I really like the looks of the block that Pat posted,I'm going to start doing that from now on. I've never had a problem with the paint, but I've always worried about it flaking off if the metal underneath wasn't perfectly clean.