[cam.man67]

Originally Posted by Corts60

First of all, you should probably ditch that high mileage garbage and run some 10w40 and add lucas oil stabilizer. The high mileage oils don't do anything helpful for flat tappet engines.

Also, the Olds manual considers 8 psi at idle, at operating temp OK. I think that is a little low but my Olds runs around 10 psi when it is hot at idle. Been that way for the last several years with no issues.

Ok, thanks for that. I generally use 10w30 because that what all the vehicle on the farm use, but the Lucas is a good idea. Thanks.

Originally Posted by SourTooth307

I'm curious what Olds 350 you have in your C-10. I'm really interested in swapping out an Olds 307 for one of those in my Cadillac and I wanted to know more about them.....

I'm not sure, to be honest. It was put in Lester long before I owned it, I assume because it was easier to swap the 5.7 diesel out for Olds power than Chevy power. It's gota a Q-Jet, but beyond that I don;t know anything about it. I really like the motor, though; after it warms up, it's a really sweet, torquey engine.