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| | | | Joined: Nov 2007 Posts: 19 New Guy | | New Guy Joined: Nov 2007 Posts: 19 | i have a 63 C-10 with a 79 350 V8. i have had an oil pressure problem. when the truck is cold and i crank it up the oil pressure guage will max out 80psi is the highest it will go but it will pass 80 and hit on the stop at 0 (probably right around 100psi when it hits). after the truck runs for a 3-5 minutes and warms up the guage will go down and run around 50-70 psi at idle. what is causing such high oil pressure? another thing if i would give it any gas after i first cranked it up it would blow the oil filter seal out the side and start leaking oil. i am pretty sure the guage is accurate.
Thanks YC | | | | | Joined: Jan 2009 Posts: 1,644 Shop Shark | | Shop Shark Joined: Jan 2009 Posts: 1,644 | In the oil pump there is a spring and a seat the spring tension give You the PSI ,could be the spring is stuck , I would think the best thing to do is replace the oil pump .
Pete | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Pete is right. The pressure release valve is stuck.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Sep 2008 Posts: 137 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2008 Posts: 137 | They sell oil pump rebuild kits, too, that have those springs and needles. | | | | | Joined: Aug 2007 Posts: 1,859 Grumpy old guy playing with trucks, cars, and boats | | Grumpy old guy playing with trucks, cars, and boats Joined: Aug 2007 Posts: 1,859 | if the engine and oil pump are stock, then either the spring is stuck or there is gear lube in the engine sump.
If the engine has been built for racing, then there is most likely a high pressure / high flow pump installed.
I used to run 100+ psi when cold and 80+ warm in my built Buick V6. That was needed to keep the mains and rods oiled at 8000 RPM as that engine oiled the cam first, then the crank.
The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me
| | | | | Joined: Nov 2007 Posts: 19 New Guy | | New Guy Joined: Nov 2007 Posts: 19 | i think the oil pump is stock. we have known the guy we got it from and he didnt say anything about it being built for racing. | | |
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