Valve cover question???

[BISCAYNE61]

I have chevy 350 and I want to run the early corvette style finned covers . The set I have has no breathers. I have oil fill tube with breather cap so will I be ok to run these covers? I have always had covers with breathers so this is new to me. Thanks for any advice its always appreciated.

 

[1958 delivery]

Only if you have the 1967 350 otherwise you'll need to provide more crankcase ventilation. Plan on running breathers and PCV.

 

[models916]

should be ok

Square inches of the Oil fill tube is greater than two 7/8 push in breathers. Just make sure you have a large flow breather cap on top. If you don't have enough you will find your dipstick popped out after a hard run.

 

[dq409]

Didn`t they change the bolt pattern on the later 350s valve covers?

I think it would depend on what year 350 you have,,

 

[DonSSDD]

The old stuff with the oil fill tube and breather cap used either a PCV off the carb or a road draft tube, both were from the intake at the back- what intake are you using?

Don

 

[gabriel-cestaro]

drill holes

hi i put a set of ford valve covers on 327 i drill the holes in cover installed groumt works great
gabe

 

[DonSSDD]

Somebody makes those with a big Ford logo on them- for the Ford hot rods with good engines. Wonder if somebody would ever do that to a 409?

Don

 

[gabriel-cestaro]

must be different

i have been known to be different

 

[mikehd56]

Can anyone spell "Orfice"

1961 they did not know what a PCV was. They had an "Orfice". And they had a "Vent". Later when GMC came out with 350 cid small blocks the had a PCV valve ( a check valve) which took the place of the "Orfice", and the vent moved to the air filter. What our "W" friends are not telling you is that. What goes in - Has to come out. An engine under duress will have to excreat something either oil or crank case gas. So if you use older Valve covers on a newer engine. You will need to make a provision for it to breath. Older blocks had a port in the back of the block. Newer did not. Thus the need of ports in the valve covers.

 

[broglie]

Hi for the question on the word is orifice.
glad to assist.
My quest now is I have 6 cyl with one bad piston. What is less work, and money, fix this piston, or replace engine with a 283. I would like to have the 283 but what do I have to change. My trans is automatic, maybe powerglide
Thanks broglie