NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post

97Formula · 08-29-2014, 06:37 AM

I've seen a few threads on other message boards where the oil pressure actually drops for a little bit then comes back (drops around 4000-4500rpm, and at 5500 comes back up). Some even say it's just a typical thing for the LT1, while others say it's not normal.

I just recently noticed mine doing this (never really looked at the oil gauge before so I don't know how long it's been doing this). But at times, it can drop as low as 35 at WOT around 4500rpm, then go back to 50-55 at around 5000-5500rpm (when accelerating from almost a dead stop). WOT on the highway (passing 45 - 70mph) the oil pressure only drops a little bit at the same RPM's.

If I drive normally (up to 3/4 throttle), the oil pressure maintains 40-45 psi the entire time, then drops to 18-20 psi at idle (already confirmed that is normal when warm/hot).

Any thoughts? Do I need to take it to a repair shop yesterday? If so, any good shops in Central NJ (Trenton area) that would be able to fix? Thanks!

Car has 34300 miles, Mobil1 5w30 and K&N HP2002 filter (changed about 100 miles ago)

08-29-2014, 06:37 AM	#1
97Formula Join Date: Jun 2006 Posts: 182 iTrader: (0)	Oil pressure drops at WOT I've seen a few threads on other message boards where the oil pressure actually drops for a little bit then comes back (drops around 4000-4500rpm, and at 5500 comes back up). Some even say it's just a typical thing for the LT1, while others say it's not normal. I just recently noticed mine doing this (never really looked at the oil gauge before so I don't know how long it's been doing this). But at times, it can drop as low as 35 at WOT around 4500rpm, then go back to 50-55 at around 5000-5500rpm (when accelerating from almost a dead stop). WOT on the highway (passing 45 - 70mph) the oil pressure only drops a little bit at the same RPM's. If I drive normally (up to 3/4 throttle), the oil pressure maintains 40-45 psi the entire time, then drops to 18-20 psi at idle (already confirmed that is normal when warm/hot). Any thoughts? Do I need to take it to a repair shop yesterday? If so, any good shops in Central NJ (Trenton area) that would be able to fix? Thanks! Car has 34300 miles, Mobil1 5w30 and K&N HP2002 filter (changed about 100 miles ago) __________________ Click here for my vBGarage! Moroso CAI, Hypertech air charger, HPP+ w/160* powerstat, 1LE elbow, Relocated IAT sensor, Spintech muffler, Hotchkis chrome strut tower brace Last edited by 97Formula; 08-29-2014 at 06:38 AM.