High volume vs. High pressure oil pump
#1
High volume vs. High pressure oil pump
Im trying to decide which to get. Im building a lt1 383 supercharged. And i have a canton pan. Which Oil pump should i buy. Its probably gonna be a melling so if you can suggest one of there oil pumps. Thanks
#7
Having a high volume pump only is bad with a stock pan as it will suck it dry. I have a mellings 10552 which is 10 % higher volume, and it as been working fine with a canton pan. They did not have a 10554 in stock when I bought it, and I needed it same day. The volume it provides is pretty nice, it will start building pressure in the car as it cranks so oil is going through the motor before it starts.
#9
Gee... I didn't know that. I guess I better have them pull the 80psi spring out of the stock/blueprinted pump in my 800HP/800lb-ft 381 LT1..... its only been 10 years since it was built, and I'd hate to have "failures" now.
#10
Having a high volume pump only is bad with a stock pan as it will suck it dry. I have a mellings 10552 which is 10 % higher volume, and it as been working fine with a canton pan. They did not have a 10554 in stock when I bought it, and I needed it same day. The volume it provides is pretty nice, it will start building pressure in the car as it cranks so oil is going through the motor before it starts.
I have HV for 20k now, and many 120+ pulls no issues... When I asked my machine shop about this suck the pan dry idea they looked at me like I was crazy...
#12
All it takes is a momentary loss of pressure at high RPMs to ruin your day.
#14
call me old school, but if i recall correctly, the only gm motor that had an oiling system that could be "sucked dry" by a high volume oil pump was an oldsmobile motor.years ago i built a 403 in a 78 trans am and added rocket heads to it, ran it with a super t-10 i added. at the time when i built it, i called joe mondello (rip) and he said no hv pumps for olds motors. i have had hv pumps in all my sbc chevys-no problems