3/8" rear oil galley plug
Thread Starter
Registered User
Joined: Apr 2012
Posts: 90
From: Davison Mi.
3/8" rear oil galley plug
My names Charlie and this is my 1st post and I have a question.
I have a 1970 442 with a 455ci ols engine which I am currently rebuilding.
I notice in my shop manual there is supposed to be a 3/8" pipe plug behind the 29/32 freeze plug on the left rear of the block near the cam plug.
PP-40 Oil Galley Pipe Plug
A 3/8" pipe plug with a .040 oil hole in it to replace the stock left rear oil galley plug. If your oil galley plug does not have a .040 hole in it, you may experience excessive distributor gear and camshaft distributor gear wear. This plug is located behind the 29/32" freeze plug on the left rear side of the camshaft plug in the bell housing area. If left out, you could experience
a serious drop in oil pressure.
Mine does not have this or any way to install it, when you look at my block inside I can see the inside of the freeze plug thats it?
I have a 1970 442 with a 455ci ols engine which I am currently rebuilding.
I notice in my shop manual there is supposed to be a 3/8" pipe plug behind the 29/32 freeze plug on the left rear of the block near the cam plug.
PP-40 Oil Galley Pipe Plug
A 3/8" pipe plug with a .040 oil hole in it to replace the stock left rear oil galley plug. If your oil galley plug does not have a .040 hole in it, you may experience excessive distributor gear and camshaft distributor gear wear. This plug is located behind the 29/32" freeze plug on the left rear side of the camshaft plug in the bell housing area. If left out, you could experience
a serious drop in oil pressure.
Mine does not have this or any way to install it, when you look at my block inside I can see the inside of the freeze plug thats it?
Just the facts...
Joined: May 2008
Posts: 1,259
From: THE GREAT WIDE-OPEN
you will have to remove that "freeze plug" to view the pipe plug in question. you may need to squirt some cleaner in there, as the .040" hole in the plug is usually plugged with engine smegma after a bunch of miles. it can be either an inside hex(allen) or inside square drive plug. if it's square, it should be 5/16".
bill
bill
Connoisseur d'Junque
Joined: Sep 2010
Posts: 21,183
From: The Hudson Valley
Is the engine apart?
If so, then run a bottle brush (or a dowel, or anything) through the LH gallery, from the front pipe-thread plug behind the timing cover, to the back.
Look into the distributor hole.
If the brush comes out and you can see it, then you're right, there's no plug.
- Eric
If so, then run a bottle brush (or a dowel, or anything) through the LH gallery, from the front pipe-thread plug behind the timing cover, to the back.
Look into the distributor hole.
If the brush comes out and you can see it, then you're right, there's no plug.
- Eric
Thread Starter
Registered User
Joined: Apr 2012
Posts: 90
From: Davison Mi.
Is the engine apart?
If so, then run a bottle brush (or a dowel, or anything) through the LH gallery, from the front pipe-thread plug behind the timing cover, to the back.
Look into the distributor hole.
If the brush comes out and you can see it, then you're right, there's no plug.
- Eric
If so, then run a bottle brush (or a dowel, or anything) through the LH gallery, from the front pipe-thread plug behind the timing cover, to the back.
Look into the distributor hole.
If the brush comes out and you can see it, then you're right, there's no plug.
- Eric
Thread Starter
Registered User
Joined: Apr 2012
Posts: 90
From: Davison Mi.
you will have to remove that "freeze plug" to view the pipe plug in question. you may need to squirt some cleaner in there, as the .040" hole in the plug is usually plugged with engine smegma after a bunch of miles. it can be either an inside hex(allen) or inside square drive plug. if it's square, it should be 5/16".
bill
bill
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