Your thoughts on Ported vs regular LS6 oil pump
Originally Posted by cyphur_traq
i bought a stock ls6 pump from a member on this board, and ported THE HELL out of it. not just the openings, but ported some of the material out of the entire casting on the inside. i am in the process of cleaning it up right now, but i REALLY opened up the two intlets/outlets. only paid $45 for mine.
you know, its important that the sides are close to the rotating rings... you didnt enlarge any of that area did ya? have any pics?
Originally Posted by zamboxl
so if you got low oil pressure putting in a ported pump won't increase the oil pressure/ oil flow. also anyone out there got any exp with the slp ported ls6 oil pumps.
The volume flow rate will not/cannot change. About the only thing you accomplish is the parasitic load of the pump goes down a little. This is also why a lower viscosity oil reduces oil pressure, the oil moves through the engine more easily and the back pressure doesn't climb as high since the pump works less hard.
For anyone who is interested the oil in a journal bearing is actually at 1000's of psi in the loaded portion of the oil film between the bearing and the crankshaft. If the oil inlet hole were placed there the oil would be pushed back into the pump overcoming the 50-60 psi relief spring and your engine would die in seconds. The oil is actually introduced in the unloaded portion of the bearing (stare at the hole locations for a while and you will see). The pumps only job is to provide fresh oil to replace the oil sluffed out the sides of the bearing from the previous revolution. Therefore pressure doesn't really matter, the pressure is just the easiest indirect way of measuring oil flow through the engine.
If I was going to have an all out race car, $500.00 for the oil pump might be piece of mind. For the normal street car with common modifications, Which most of the cars on here are, the ported LS6 manifold should apply ample oil pressure. I did see an increase of maybe 10 pounds of oil pressure with the ported LS6 over the stock Y2K ls1 pump. 
I just replaced my pump with a stock LS6 pump when I did my first cam swap. I think it was like 65 bux or so. Idles at about 45 psi. Driving around town is usually about 60 psi. WOT is about 75 psi. I really didn't see the need to spend the extra cash for the ported one.
Stocker will work fine in most applications. It's not uncommon at all for people to just leave a stock pump in place for a cam swap. If you have a 97-00 pump then yeah it's worth upgrading. Is it worth going to a aftermarket ported pump, that's your decision. As others said it does increase the volume of the pump, which may help some in a motor that is gonna run alittle more in the upper rpms. It's your call. I just put a stock LS6 pump back in. I got a pretty good deal on a new LS6 pump and just left it at that.
Yea, well, since my car is a 00, but made in late 99, I know I have a old style LS1 pump, so I went with the Katech ported LS6 pump...
The shimming may work, but for my needs, the ported LS6 will do just fine.
The shimming may work, but for my needs, the ported LS6 will do just fine.
Originally Posted by kossuth
Stocker will work fine in most applications. It's not uncommon at all for people to just leave a stock pump in place for a cam swap. If you have a 97-00 pump then yeah it's worth upgrading. Is it worth going to a aftermarket ported pump, that's your decision. As others said it does increase the volume of the pump, which may help some in a motor that is gonna run alittle more in the upper rpms. It's your call. I just put a stock LS6 pump back in. I got a pretty good deal on a new LS6 pump and just left it at that.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
I don't see what's wrong with the stock LS1 pumps. I get 45psi at hot idle, 60 cruise, and 70 WOT with 79k. Any more volumne then that, I'd get a bigger oil pan as LS1's can have problems with oil draining back to the pan fast enough under prolonged G's. People use stock oil pumps all the time on LT1's and GEN 1 small blocks and are just fine, and those engines get lower pressure across the board then we do with the stock spring. Lingenfelter himself swore by the stock LT1 pump. Unless you have sludge buildup in the pan and you have a faulty 98 pump, I think $500 is a waste of money for a cam/heads LS1.
Jason
Jason
I have a 2000 LQ4 pump that I hand ported, and I'm having NDT'd to ensure there are no cracks in the housing. Any reason not to use it? What is the deal with the pre-2001 pumps? I have heard they suck, but never with any explanation.
