i recently bought a new oil pump for my 84 Z HO 305. How do i get the screen off the old one and on to the new one?

 

The easiest way is to pay the $5 for a new screen. Part # 55-S

While you're at it, get a Mr Gasket pressure regulator spring for it, part # 26; that will take the pressure to 30-35 idling and 55-60 cruising. And, get an intermediate drive shaft for it that has a steel collar instead of that stupid plastic BS; part # IS-55-E.

 

the pump i got is a high volume one, but is there anyway to take the screen off the old one?

 

I would recommend taking it back and getting a regular one. Just a plain, common, $12 M55. A high volume one won't do you any good, maybe even more harm than good. With the difference in price you can easily afford the other parts. And, you'll have a nice clean screen.

I never re-use the screen. I've re-used pumps and put new screens on them; I put the pump body in a vise and use a blunt chisel to knock them off.

 

ok, i got the new oil screen from the store, but not, how do i get it in the new pump? Its like press-fit but hard as hell to barely get in. thanks for all your help.

 

I put the screen/pickup in the freezer for a few hours, then remove the pump's lower cover and bake it in the oven at 350degF for 15 minutes. The screen/pickup with then slide right into the pump's lower cover with minimal effort.

You'll need to reassemble the pump and set the pickup position to put it 3/8" off the oil pan's floor.

When it's set right, take it to a shop and have then spot-weld the pickup to the pump housing...after removing the lower cover (again) and removing the pressure relief spring and piston.

Yes, it's a lot of work, but absolutely worth it. The pickup won't come off, and it will be in the right position.

 

lot of people weld the pick up to the pump cover but i wouldn't. i weld a brace on the pick up tube and bolt it to the pump, using one of the pump cover screws.