high performance oil pump
01-07-2007, 09:27 PM
#3
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Don't go high volume. You don't need it and will only lose HP from trying to turn the larger gear. If you feel that you need more, then just put a high pressure spring into it. But with the roller cam and rockers you don't need but a little bit of oil to lube things properly. Windage slows the motor down and HP is robbed.
01-07-2007, 09:56 PM
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I went with the melling m55a it is a high pressure pump already has the spring in it. Its about $29 from cnc-motorsports and you can get the driver shaft for about $8 which is well worth it.
01-07-2007, 10:14 PM
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Originally Posted by 95FbFormula
I went with the melling m55a it is a high pressure pump already has the spring in it. Its about $29 from cnc-motorsports and you can get the driver shaft for about $8 which is well worth it.
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01-07-2007, 10:29 PM
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That doesn't explain anything. You can have higher pressure with the same amount of flow(volume), all you do is make the diameter (cross sectional area) smaller. Therefore, you don't lose any hp. Fluid dynamics.
01-07-2007, 10:33 PM
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Originally Posted by fergymoto
More drag...
01-07-2007, 10:40 PM
#12
Originally Posted by seawolf06
That doesn't explain anything. You can have higher pressure with the same amount of flow(volume), all you do is make the diameter (cross sectional area) smaller. Therefore, you don't lose any hp. Fluid dynamics.
01-07-2007, 10:47 PM
#14
Originally Posted by seawolf06
Trust me, if I had the money I would try every different bolt on for the LT1 individually and list all the hp variations I could. 
01-07-2007, 10:54 PM
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Both Thunder and Futral build motors with HV pumps all the time. Only reason I didn't go HV and chose HP instead is because I couldn't afford an aftermarket pan.
01-07-2007, 11:02 PM
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The high pressure pump will cause more windage due to more oil being sprayed all over the other engine parts. Windage will kill HP. Look at some of the motors being built for the engine masters challenge in Popular Hot Rodding. All of them are controling were the oil returns to the pan to minimize windage. I highly recommend staying with a stock oil pump, it is more than enough.
01-07-2007, 11:06 PM
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I just read that the M55A pump with the white spring acts exactly like a stock pump until about 55psi. Then it provides a higher pressure than stock. Don't stock LT1's have a windage tray?
01-07-2007, 11:14 PM
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Yes but it isn't that great. It helps, but it is nothing like a aftermarket oil pan for oil control and effectiveness. If you can go to Popular Hot Rodding's web site and read about some of the Engine Masters Challenge motors. They show you the extensive amount of work done to control were the oil returns to the oil pan and how they keep the oil from splashing up onto the rotating assembly. And that is with useing aftermarket oil pans.