Coonass350

iTrader: (19)

Was thinking of buying the TSP Ported LS6 oil pump but after reading various sources, it seems that a ported LS1 oil pump flows/pumps just as well as the aftermarket oil pumps. Is this true? In one of my LS books they ported the LS1 oil pump and used it without any problems.

Let me know what you guys think, and anyone who has ported their LS1 oil pump chime in and let me know how its worked out for you. I dont really think its so much a "port" job as it is more "blending" certain spots.

wildcamaro

iTrader: (15)

Porting oil pump/ buy high pressure volume pump is overrated in my opinion unless you're building a race motor turning a lot of rpm or a lot of g forces...typical street motor is fine with an ls6 or melling m295...

Coonass350

iTrader: (19)

what about stock ls1 pump?

Coonass350

iTrader: (19)

I just got done porting my LS1 oil pump, I guess I'll see how it works out. I didnt use a shim or anything though..

wildcamaro

iTrader: (15)

If ported free then I guess it's worth it since you already got it...and yea stock ls1 pp is fine if new

Fastdriver1992

iTrader: (1)

i have taken a stock ls1 oil pump and shimmed/ported it, 60psi cold idle 40psi hot idle on 10w-30 synthetic and 70lbs WOT 6800rpms

Coonass350

iTrader: (19)

Cool, sounds like it will be fine for what I need. thanks

chrisfrost

iTrader: (8)

The only thing that I can see being a disadvantage is a thread in this forum 6 months or so ago a guy showed a graph that showed factory GM pumps pressure dropping off drastically above 6500rpm's and the Melling pumps continuing to increase in pressure to 8000rpm's . I don't know how true but I imagine it is true .