Low oil pressure in ZL-1

**69SSZL1** · #1 03-11-2009, 06:18 AM

Remove your oil filter and look at the block. There are 2 large (3/4"?) holes. 1 large hole should have a check valve in it or you will bleed pressure like crazy. The valve is availible thru Chevy Performance Parts-Scoggin Dickey knows what it is if you tell them its for ZL-1 block.

**Alss** · #2 03-11-2009, 06:21 AM

thats got to be it!!..never put one in!!!

**69SSZL1** · #3 03-11-2009, 06:33 AM

Check it, and if you don't have one in the block let us know.

**Alss** · #4 03-11-2009, 06:50 AM

I know I did not put one in..Ill verify it in the AM and order that piece..many thanks!!

ALbert

**njsteve** · #5 03-11-2009, 07:33 AM

Wow, this is better than any soap opera or game show. It actually has a happy ending (crossing my fingers at the moment). Alss, update us as soon as you know.

Joe69Camaro · #6 03-11-2009, 08:24 AM

Sounds Like sound advise to me from 69ss ZL1... Lets check it out tomorrow.. Sounds like what is going on!!!! All the problems indicate the facts at hand... And lets go from there....

**Bill Rose** · #7 03-11-2009, 08:32 AM

[ QUOTE ]
Sounds Like sound advise to me from 69ss ZL1... Lets check it out tomorrow.. Sounds like what is going on!!!! All the problems indicate the facts at hand... And lets go from there....

[/ QUOTE ]

Man! I guess they'll let anyone join this site

Just kiddin Joe. Welcome to SYC..

Joe was nice enough to stop in a few weeks ago and help out with the firing of my ElCamino..... and it's a good thing Joe was there. It needed some more valve adjusting, before it lit

**TXSS** · #8 03-11-2009, 08:26 AM

69SSZL1 is correct. If this is an 053 block. The relief valve and the filter nipple have to be purchased separately and installed by the user. For some reason they don't come with the block. I left it out of the first ZL-1 I built and had about the same numbers as you're seeing. Easy Fix

Relief Valve

**SS427** · #9 03-11-2009, 07:13 PM

[ QUOTE ]
Check it, and if you don't have one in the block let us know.

[/ QUOTE ]

Thats what we love about this site. It's people like this who come forward with a little help and knowledge and potentially save someone a little money and LOTS of time!!

**Alss** · #10 03-11-2009, 07:27 PM

Just verified the pressure reg is NOT in the block....its ordered and on its way..glad I didnt get the motor ALL the way out. Thanks SYC

The Following User Says Thank You to Alss For This Useful Post:
DW31S (08-09-2019)

Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars.