1972 350 rocket

[1972madison]

My motor which was rebuilt about 4 years i think and i bought the car about 2 months ago and now the shop where my car is at says the top half of my motor is not getting any oil so they say i need to spend about 2 grand to fix it, does anyone know what this could be, the top half of my motor is dry, they say no oil getting into valve train, replace the cam shaft bearings or something.
Any Help anyone ?

[joe_padavano]

Originally Posted by 1972madison

My motor which was rebuilt about 4 years i think and i bought the car about 2 months ago and now the shop where my car is at says the top half of my motor is not getting any oil so they say i need to spend about 2 grand to fix it, does anyone know what this could be, the top half of my motor is dry, they say no oil getting into valve train, replace the cam shaft bearings or something.
Any Help anyone ?

The valvetrain is oiled through the pushrods. There is a major oil gallery alongside each of the two lifter banks. The oil flows into the lifters (which use the oil pressure to operate) then up through the hollow pushrods to the valvetrain. It's unlikely the main galleries are blocked, since the motor would be making major noise. Likely problems are plugged pushrods (if the old ones were reused without proper cleaning, for example), bad lifters, or use of incorrect Chevy lifters instead of Olds specific lifters.

[1972madison]

So what should i tell the guy at the shop ? Check the pushrods or what ?

[joe_padavano]

Originally Posted by 1972madison

So what should i tell the guy at the shop ? Check the pushrods or what ?

Well, how about this:

Originally Posted by joe_padavano

Likely problems are plugged pushrods (if the old ones were reused without proper cleaning, for example), bad lifters, or use of incorrect Chevy lifters instead of Olds specific lifters.

[texasred]

First and foremost, find an "Olds" man to look at it. My experience with Ch#y and F*ord guys is that they don't know how an Olds motor works and do things like throw in high volume oil pumps without bothering with the return or setting clearances way too tight.

That's just my (WAAAAAAAAAAAAAAAAAY much more than) $0.02 of experience.

C.J.