454 cam bearing question

[cajunpapa69]

while lubing the cam bearings to start assy of my 454,i noticed on the 5th bearing the oil hole is facing the top of the block(toward the intake man.) instead of toward the bottom(facing the crank) where the rest of the holes are .i'm thanking this cant be correct and the machine shop messed up and installed one wrong. am i missing something or am i right.

 

[darrell]

i have never worked on a big block but i assume as long as there is an oil passage that lines up with the oiling hole it should be o.k, but i'm sure you will get more experienced answers soon

 

[Anonymous]

The #5 cam journal on a BBC is grooved like a SBC....In reality it can be clocked ANYWHERE. I clock them at 4-5 O'Clock to create an oil wedge like I do on SBCs, but you're fine and good to go.

Felber

 

[cajunpapa69]

thanks felber632,thats the best news i heard in at least a year,been waiting a long time for parts to come in and machine work to be done and when i saw that i was some kind of disgusted.i will be building the short block tomorrow after work,once again thanks a bunch, cajunpapa69( david)

 

[Cadillac Performance Pts.]

It does need to be 1/4 turn before the bottom to give a shield or "wedge" as said, but it will run like it is, especially since the pump is toward the rear and #5 is the culprit. If it's a higher rpm engine, I'd have them fix it for sure. 4000 and lower, it'll probably be fine.

 

[Anonymous]

It does need to be 1/4 turn before the bottom to give a shield or "wedge" as said, but it will run like it is, especially since the pump is toward the rear and #5 is the culprit. If it's a higher rpm engine, I'd have them fix it for sure. 4000 and lower, it'll probably be fine.

Well I agree theoretically....But what about the 4 in front at 6 O'Clock that are completely "closed off" by valvespring load with an absolute disadvantage of a hydrodynamic wedge? Now when you use my logic....He's more than fine even at 8000 RPM...But then again I don't know much about BBCs LOL

Felber

 

[COLD]

Any problem using lifter galley oil restrictors? :?

 

[Anonymous]

Only when using hydraulic lifers and/or ball style rockers. The only reason really for restrictors is to reduce oil consumption and in some cases increase oil pressure when the pump doesn't keep up. In a perfect world, you will use an adequate oilpan and pump to supply oil to the top-end as intended....So, in a drag application...Use em....On an airboat....Use a big pan with plenty of capacity and don't use em....JMO

Felber

 

[COLD]

So Melling M-77HV with Hamburgers 8 Qt, pan, adequate? Solid flat tappet and roller rockers. Just thought keeping more oil available for the mains wouldn't be a bad thing.
Thanks 8)

 

[Cadillac Performance Pts.]

We bush our lifter bores on solid lift flat tappets and reduce the hole size to .080"in HP Cadillacs for that reason (more oil to crank) and if you spit a lifter from a bent pushrod or broken rocker, our mains oil off of the lifter galley like a 440 Chrysler and a spit out lifter will wipe a crank out before you let off the throttle. A hydraulic cam needs more than .080 IMO, so we don't usually bush them.