Hey guys.
Please help or recommend something.
Car - 2011 Camaro SS LS3. 3000miles. Right after break-in.
We installed Whipple 2.9 blower, Kooks headers, catback and Derale Atomic engine oil cooler with LPE oil cooler adapter (which bolts to oil pan). All tubes are thick AN-8 and AN-10. No measurable restriction as for oil cooler.
Problem - low oil pressure, especially 5000+rpm.
The oil pressure peaked @ 4700 with 53psi and then started to fall to 45psi at 6500rpm. Oil temp 210F.
First we thought its a restrictive oil cooler. Tried a OEM C6Z06 one - same thing. Then we thought its a defective factory oil pump.
Just installed a #10296 Melling Hi-volume +18% oil pump with hi pressure red spring inside.
... almost same thing. idle oil pressure is increased however same tapering at high rpm and about 2psi more pressure everywhere 3000+rpm.
Its a complete BS and oem sensor is not lying. Mechanical gauge shows the same.
What can it be?
Thanks in advance!
