which oil pump for sbc
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Is the 10555C OK for a street car?
Increase in volume of 25% over stock volume pump.
Features the addition of anticavitation grooves machined in the body and cover. The grooves reduce cavitation effects in high RPM applications. Pressure will be reduced at idle. The 10555C uses the high pressure spring only. Must use new 12550 drive shaft. For racing applications only.
Increase in volume of 25% over stock volume pump.
Features the addition of anticavitation grooves machined in the body and cover. The grooves reduce cavitation effects in high RPM applications. Pressure will be reduced at idle. The 10555C uses the high pressure spring only. Must use new 12550 drive shaft. For racing applications only.
- Wolfplace
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Probably because the grooves lower low RPM & idle pressure which gets some people all excited
Personally I could care less about idle pressure as long as there is some & it doesn't change for no apparent reason.
All the gauge tells you is you have a resistance to delivery pressure, bypass setpoint & possibly if you have an airation, return or delivery issue if you see goofy crap going on at higher RPM's
Personally I could care less about idle pressure as long as there is some & it doesn't change for no apparent reason.
All the gauge tells you is you have a resistance to delivery pressure, bypass setpoint & possibly if you have an airation, return or delivery issue if you see goofy crap going on at higher RPM's
Mike
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I tell people that almost word-for-word and they look at me like I just ran over their cat.Wolfplace wrote:........
Personally I could care less about idle pressure as long as there is some & it doesn't change for no apparent reason.
..........
I gotta work on being a little more diplomatic........
tom
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- BrazilianZ28Camaro
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somebody have a good/bad experience with melling M99HVS SBC oilpump?
What kind of problems it have?
What kind of problems it have?
'71 Z28 street strip car
Pump gas All motor SBC 427
3308 lbs-29x10.5 Hoosiers
NEW BEST ET
1.38 60' / 4.05 330' / 6.32@111.25mph
https://www.youtube.com/watch?v=99p13UK ... ture=share
Pump gas All motor SBC 427
3308 lbs-29x10.5 Hoosiers
NEW BEST ET
1.38 60' / 4.05 330' / 6.32@111.25mph
https://www.youtube.com/watch?v=99p13UK ... ture=share
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If it is a street car, why not just use the 10555 or 10552 select pump?Vette91 wrote:Is the 10555C OK for a street car?
Increase in volume of 25% over stock volume pump.
Features the addition of anticavitation grooves machined in the body and cover. The grooves reduce cavitation effects in high RPM applications. Pressure will be reduced at idle. The 10555C uses the high pressure spring only. Must use new 12550 drive shaft. For racing applications only.
mike
1973 RS Z28: 401ci Dart Little M, Littlefield 8-71 supercharger @14lbs boost, Callies Magnum crank, Lunati rods, JE pistons, 7.8:1, AFR 227 Comp heads, T&D 1.6 shaft rockers. Reed solid FT cam (240/250@.050-.523/.542 lift-112 LSA), QFT 750 carbs
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I thought the Melling Select pumps had billet gears.. this is from the Competition Products website;brket racer wrote:None of the Melling select pumps have Billet gears in them anymore
"Melling "M Select" Performance Oil Pump w/Extended Shafts
The drive and idler shafts have been extended to allow for additional support into the cover. This eliminates dynamic shaft deflection at increased rpm levels. The cover is doweled to the pump housing to assure alignment of shaft bores. The housing and cover are CNC machined and manganese phosphate coated for wear and rust protection. The gears are billet steel. The relief valve features a screw-in plug for easy spring change. Includes intermediate pump shaft."
Is this old and no longer true? When did they change the gear material in the select pumps? I just bought a new 10552 select pump from Stefs.. they said they had an old one on the shelf..new in a box dated April 07.
mike
1973 RS Z28: 401ci Dart Little M, Littlefield 8-71 supercharger @14lbs boost, Callies Magnum crank, Lunati rods, JE pistons, 7.8:1, AFR 227 Comp heads, T&D 1.6 shaft rockers. Reed solid FT cam (240/250@.050-.523/.542 lift-112 LSA), QFT 750 carbs
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A HotRod wrote:Are there any new options available now ?????
http://www.competitionproducts.com/prod ... CVROP65582
Mark Whitener
www.racingfuelsystems.com
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Good work isn't cheap and cheap work can't be good.
jmarkaudio wrote:A HotRod wrote:Are there any new options available now ?????
http://www.competitionproducts.com/prod ... CVROP65582
Thank You Mark !
Glenn
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did you note that they are "out of stock"jmarkaudio wrote:A HotRod wrote:Are there any new options available now ?????
http://www.competitionproducts.com/prod ... CVROP65582
1973 RS Z28: 401ci Dart Little M, Littlefield 8-71 supercharger @14lbs boost, Callies Magnum crank, Lunati rods, JE pistons, 7.8:1, AFR 227 Comp heads, T&D 1.6 shaft rockers. Reed solid FT cam (240/250@.050-.523/.542 lift-112 LSA), QFT 750 carbs
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Take black marker and swipe the gears on the end and if it fades away it a PM gear!!!!!!!!!!!!!!Tokyo Torquer wrote:did you note that they are "out of stock"jmarkaudio wrote:A HotRod wrote:Are there any new options available now ?????
http://www.competitionproducts.com/prod ... CVROP65582
Website is up and running
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55MM babbit cam bearings with 1 hole
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55MM babbit cam bearings with 1 hole
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