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Thread: 460 oil pressure issue starting at 4600 RPMs
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05-14-2008, 01:12 AM   #3 (permalink)
bprigge
 
Join Date: Feb 2002
Posts: 434
Re: 460 oil pressure issue starting at 4600 RPMs
My 347 did that with an HV pump. I don't really know why but my theory is that the pump was over running the bleed off valve and cavitating. The HV pump was making over 100 psi right off idle. I wrecked 3 gauges before I took the HV pump out. I now run a custom built standard pump, meaning no HV or HP and have steady pressure up to any RPM. Guys (and gals?) do run HVs and HPs successfully though. Maybe they got more bearing clearance?? Bruce
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\'83 Mustang Hatch, 347, Edel 6025 heads, 2.02 in, 1.60 ex, CC280HR cam
Edel RPM intake, 650 CFM Holly DP Carb, 4.10 Locker rear end, new C4(untested), 12.4 @ 115 in October of 06 with T5
Last edited by bprigge : 05-14-2008 at 01:15 AM.
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