High oil pressure reading

[C1ph3r]

hey guys. Finally brought my 70 C10 home yesterday from my dads.

So among the many small issues I need to address is the high oil pressure reading.

Stats: Original 350 small block. Was rebuilt about 9000 miles ago. But that was in the mid 90s. My grandfather didnt drive it much after the engine was rebuilt. My dad has been driving it off and on for the past year.
Mechanical pressure gauge.

So at idle the gauge is just at the half way mark. Once I start driving, it goes up almost all the way. Stops just before the 'H' line.

thanks for any help you can give.

[57taskforce]

Do you know if a new pump was put in it when rebuilt? If so stock, high volume,etc. also what weight of oil is in it?

[C1ph3r]

Originally Posted by 57taskforce

Do you know if a new pump was put in it when rebuilt? If so stock, high volume,etc. also what weight of oil is in it?

No idea. And I think the only one of those questions I can easily answer will be the oil. I'll have to call my dad and see what weight oil he had put in it. My grandfather passed away a little over a year ago and the only notes about the engine are what he wrote on the owners manual about the mileage the truck had when it was done and the year.

Sorry I know this doesn't help much. With out that info we are pretty much speculating I guess.

[Redline novdog]

Sounds like normal operating oil pressure to me.

[aboesec10]

as long as its not on the opposite end i think your fine.. My 400 would fluctuate like that. It would always get higher under higher rpms. Remember the oil pump is driven from the distributor, which is driven by the cam, which is tied to the crank. Higher rpms effect it all

[C1ph3r]

Originally Posted by Redline novdog

Sounds like normal operating oil pressure to me.

Originally Posted by aboesec10

as long as its not on the opposite end i think your fine.. My 400 would fluctuate like that. It would always get higher under higher rpms. Remember the oil pump is driven from the distributor, which is driven by the cam, which is tied to the crank. Higher rpms effect it all

ok. thanks yall. dad just said it read high, and i have never had a mechanical gauge so i was worried. i new it would fluctuate with the rpm of the truck but wasnt sure if it being so high was normal or not. i'll leave it be and move on to my many other issues.

thanks again.