ls-won-84c10

whats is the oil pump of choice for the ls3 engine? i would.'t mind getting a high volume melling pump, but ive been told by a few people that the melling pumps dont fit very well behind the timing cover and might require some clearancing of the pump or cover and id rather not have to go throught that.

CAMSTER

iTrader: (10)

High volume, high pressure..I believe they now have corrected that problem, but is no big deal, it just require some simple grinding, so as to clear the timing chain in one corner, bottom right.

davidws6

iTrader: (36)

I've read that the stock LS3 pump flows more oil ( due to the DOD ) and is cheap from GM. No clearancing required. You could even shim up the press relief just a bit for more press.

Ooop's I did not specify LS3 > L99 .... my bad

02blackbeauty19

iTrader: (22)

I am using the LS4 oil pump. It's a high pressure pump OEM pump from GM. I know guys that use this pump it 1,000+rwhp cars. Hopefully, I can be another to add to the list.

davidws6

iTrader: (36)

What pressure does it average above idle with engine hot ?

ls-won-84c10

thanks for all the info fellas..

DietCoke

iTrader: (18)

Got a blueprinted/ported ls3 pump in mine. Took some clearancing to work with the double roller chain, but all is well now

litle88

iTrader: (20)

I believe you are wrong and the L99's oil pumps are the ones that have higher volume and pressure pumps.

briancb1

The DOD pumps are the high volume units.

Call and talk with the guys at scoggin dickey, they have done their homework and then some with all the OE GM pumps.