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03-20-2002, 07:47 PM
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#1 |
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Registered Member
Join Date: Apr 1999
Location: seffner, Florida, usa
Posts: 95
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oil pressure
I have a Coast High 347 stroker with clevite bearings, childs and Albert rings, probe forged pistons, a steel crank, and a main girdle. I have about 30K miles on the motor and had ntrous for about 15k and a Vortech T trim 10# boost for about 5K. I use 10/30 oil and teflon additve and change every 3K. Lately my oil pressure drops below half after the engine is fully warmed up and never returns to it's previous 3/4 postion.
I was wondering if the oil pump may be going bad or what else could be causing the pressure drop? Please toss out any ideas that will give me peace of mind. I don't really push the motor but would like to once in a while dust of a Vette or two. Thanks ya'll
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88 GT mass air conversion from 90lx, Cobra Intake(ported/polished lower),Edlebrock Aluminum Heads(ported/polished),38# injectors 70 mm BBK TB, 77mm Pro M, Coast High 347 SB, Wolverine custom cam, Vortech T Trim w power pipe(13lbs), fmu & boost retard, 255lb fuel pump (BBK off road H pipe, Dynomax cat back, alum driveshaft w safety loop, Konis,Southside Bars w chromemoly torque boxes,AOD w lentech valve body, B&M MegaShifter, 4.10 with True Track locker, SVO springs, subs, cross drilled rotors, Nitto Drag Radials,MSD A6, black magic fan etc. |
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03-21-2002, 07:57 PM
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#2 |
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Junior Member
Join Date: Mar 1999
Location: Ventura, California
Posts: 8,981
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What are the numbers?
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Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local
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03-22-2002, 12:11 AM
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#3 |
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Registered Member
Join Date: Dec 1998
Location: Hatteras,NC,USA
Posts: 108
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did you use the old sending unit from the old motor? These fail and the time and give low readings, just replaced mine on a 92 convertible, it was doing the same thing, go to pep boys and get one, while you are replacing it ,screw a manual guage in first to get an accurate reading, I have heard of many early 347 kits in need of a rebuild before 50k........
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86 GT, March Pulleys, Off Road H-Pipe, Ultraflow/Mac Tailpipes, 3.73 gears/ AOD to T-5 Conversion/ Motorsport Wires/ Trick Flow Heads BBK headers/ F Cam/ Forged TRWS/ Cobra Intake Mass Air conversion, Bored .40 /1.6 Motorsport rockers |
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