At the end of a run, when I let off, I lose oil pressure breifly and it then comes back. I have tried the stock LS pan, and two different pans with all kinds of baffles and trap doors. Pickup height is correct. Adding oil does not seem to help. I have run as little as 4qts and as much as 6 qts. It has great oil pressure thoughtout the run and any other time. Has anyone run into this before? Has anyone restricted the pickup tube to control the oil flow?
A lot of super stock sbcs see the same thing. One friend tells me with the water-weight synthetic oil that is not so pronounced with his car. Faster drain-back maybe? I'm suprised more oil doesn't help.
__________________ 9.91, 136.51, 1.38 60' (Spinning, usually 1.31), 1329' DA, foot braking it, NA 383" LT1, 4L60E, 3280 lbs, LT4 heads & intake, street legal.
Now 350" NHRA/IHRA SS/JA. Well, maybe it's not the SLOWEST on the planet: 9.88 @ 134.10, 1.260 60' (11.00 NHRA Index) But still not fast enough.
Ive had alot of oil pressure problems with the stock pans.This year i went to a moroso and all my probems went away.The moroso has a rear sump that is included with the pan and it also holds 8qts not 6qts like they advertise.
__________________ 432 NITROUS POWERED LSX FIRST EVER NOS POWERED SS IN THE 7"S
BEST 60FT 1.16
7.91 @ 172.00
I had a simular issue that went away after going to a thinner oil. I know it isn't anything you haven't thought of, but I just thought I'd mention it again. Also I know Harland was having som problems with oil moving up the back of the block on one of there cars that was launching with a Trans Brake so you might just contact him also. Y2Khawk is his name on here if you don't know him. Good luck.