I've done searches on this topic and some of the answers seem contradictory. I've decided that I'll be going with some type of larger aftermarket pan probably the 7 qt variety. Question is do I go with a High Volume pump or not. It looks like many guys are running a blueprinted pump but after research it looks like these are all of the high volume variety, and some folks seem to think that HV pumps are not a good idea.

 

High volume pumps are not recomended if you have a stock pan, with aftermarket higher capacity pans there are a bunch of guys running h.v. pumps

 

From Fred when i asked the same question "The stock pump provides adequate flow for a stroked LT1 turning some decent RPM. I use the stock pump, blueprinted, pickup tack welded, and an 80psi pressure relief spring (aka "the white spring"). I use the stock pan and a windage tray. Some very minor tapping of the pan to clear the crank - you can't notice it, its so subtle. Engine has a 7,200rpm redline, spraying a 300-shot of nitrous. No problems with the oil system. Same system also worked fine on a 383 running 20+# of boost, and making 1,125HP at the crank. No problems with the oil system, even with 1.3x 60-ft times and 3 foot wheelstands. Well.... actually, the pan did see some damage after a heavy drop from one of those wheelstands, and required a little straightening...." and the part numbers you need:
oil pump 3/4" inlet 93442037 $64.03

oil pump screen 3/4" tube 12550042 $8.44

white oil pump spring 3848911 $2.14

hope that helps.

 

Very helpful.

Thank you.

 

This post in case some were misled or believe an increase in cubic inches requires an increase in the capacity of the oiling system. The increase in bore/stroke has no bearing on the requirements of the oiling system, nor does it increase the requirement for oil, the oil pump must deliver.

 

Thanks, I understand that, but frankly don't want to modify my stock pan, I'd rather spend the money and get an after market pan. Increasing the capacity of the oiling system, done properly, can't hurt can it?

 

In all honesty, I've seen more people have problems with the Canton pan than with the stock pan. How big is the stroker.... what crank? With a 3.75 you often don't have too modify the stock pan, unless you consider some very minor taps with a hammer to be a modification.

 

If referring to oil pan itself, no. If referring to capacity to pump more oil through the oil passages, yes!

 

I'm not planning on using the Canton pan. I've been looking at a Milodon stroker pan, but I am planning on using a HV pump.

 

Just to be clear: DO NOT use a HV pump and a stock pan. There is also no need for a HV pump in a properly setup motor with a larger pan, but at least it won't do any harm.

Rich

 

The short version. I'm confident some misunderstood me.
The long version follows....

"Increasing the capacity of the oiling system, done properly, can't hurt can it?"
If referring to increasing capacity of the oil pan itself, no, it can not hurt.

"Increasing the capacity of the oiling system, done properly, can't hurt can it?"
If referring to (increasing the) capacity to pump more oil through the oil passages, IOW, increasing the pump's capacity to pump more oil, as would be the case with a HV pump, yes, it can hurt.

 

So you're recommending a stock volume pump even with a 7qt capacity oil pan. I'm not trying to be argumentitave, I'd just like to learn. Every small block build up that I've read about include the addition of a HV pump.

More questions. A HV pump doesn't increase pressure correct, just has a capacity to pump more oil during a given period. Why is it O.K. to put a "white spring" in the system, which increases oil pressure. This also seems counter-intuitive to me as blueprinted motors invariably have smaller bearing clearances, as will this motor. I haven't seen the build sheet but my machinist was shooting for .0020 - .0025 clearances on the mains.

???

 

HP spring allows the pressure to keep increasing with increasing rpm.

Rich

 

oil pump 3/4" inlet 93442037 $64.03

oil pump screen 3/4" tube 12550042 $8.44

white oil pump spring 3848911 $2.14

what is the difference in springs on the stock system vs. the "white" spring?

 

Get a Canton pan and one of their blueprinted HV oil pumps with the pickup already installed.

The bearing clearances determine what pump ya should run. A HV pump will do nothing but help and it will keep it from ever starving for oil.
Call Canton and they will recommend a pump but ya need to know your brg clearances.


Get the one with the 3/4" pickup.