Oil Passage Question

[vristang]

I noticed this difference between the block I am running and the '74 block I will be using with the rebuild. I guess the capped plug would keep oil pressure high for the lifters. Why would one want to vent that passage?

If you guys have seen either of these in a motor I would be interested in knowing the application.

Does anyone have a preference?

 

[vristang]

Just to clarify the '74 block has the drilled plug. The other 351W block (solid cap, and all the paper towels), is early '80s? Don't remember

 

[vristang]

Can people atleast see the difference between the two pics?

Are they bad pics?

Has this been covered too many times for anyone to want to talk about it again?

 

[vristang]

Feel free to post anything.



I hate taking stabs in the dark.

 

[vristang]

Was it something I said?

 

[vristang]

Have I been banned, and someone forgot to tell me?

40 views and not even a "I have no idea what you're talking about."

 

[srothfuss]

I can't help you, because this winter will be my first Ford build-up. But maybe I can get your thread started for some of the people that have been inside their motors "on occasion"

 

[vristang]

Thank you srothfuss. I was starting to doubt my own existence.

Well, if no one can help, I think I will change my objective to getting the highest view to reply ratio in Stangnet history.

Wonder what the record is? I am currently at 63:1.

My thought on the plugs is that the capped plug is for hydraulic lifters and that the drilled plug is for solid lifters.
Anyone?

 

[rd]

I just looked at the 302 and 351 blocks in the garage and both have the cup plug in that hole. It looks like someone drilled it to get a tool in it to pull it out. As far as I know, it has to be plugged.

 

[gearheadfred5.0]

There is supposed to be a steel plug (kinda like a freeze plug) on top of the oil gallies. Oil would pour out of those passages and you would not have very much if any oil pressure! The plug comes in a freeze plug kit, and you NEED it. Hope this helps.

Fred.

 

[vristang]

There is supposed to be a steel plug (kinda like a freeze plug) on top of the oil gallies. Oil would pour out of those passages and you would not have very much if any oil pressure! The plug comes in a freeze plug kit, and you NEED it. Hope this helps.

Fred.

Interesting. The block with the two holes is the as machined version, before installation of the plug. This block was supposed to be ready to assemble! Maybe I need to have a talk with the machine shop.

Thanks for the responses.
Thanks for all the views
Ratio is 78:3 = 26:1
Sweet!