SB Cam Thrust Plate questions

[djwhog]

OK on a small block, I have seen them setup several ways with and without the oiler bolt. (this special bolt is thru-drilled for oil passage; its one of the four bolts that mount the thrust plate to the block; the other three bolts are standard bolts) I have also seen them with a angle tab steel plate in the hole too.


1st ?
Is the oiler bolt the one that goes in the left top passenger side corner?

2nd ?
Also my next question, on a 340 block there are 2 little hole below the larger drain holes in the galley of the block. These are on the side of the camshaft. Do these get the mini plugs put in them?


I know I have seen on racing engines there is also a kit to drill and sleve the lifter galleys with a tube etc..

3rd and last ?
Do I need that steel part or is the oil drilled bolet enough? Sen these on some without the oiler bolt mounted in the lower right.

thanks!

 

[djwhog]

Ok I took apart my old 273 laying around. it has all 4 solid bolts holding the plate and it is the old style that is machined flat against the block and does NOT have the plugs in the block I asked about in the question above.

The new style plate is machine in a design that looks like some oil will seep out since it is machine with cut outs. Take a look at the pics below.

So should I just use the new style plate and the 4 solid bolts on the 70 340?
I have seen these setup some many ways in 318's 360's etc. over the years, oil bolts, solid bolts with tabs, no tabs, even a bolt left out.

And lastly just do not put the plugs in the oil holes in the block?

thanks guys!

 

[pagilman]

Your top pic is correctly assembled, you shouldn't have a bolt with a hole with the setup you have. The one with the hole goes in the top passenger hole with the setup without the drip plate.

 

[djwhog]

thanks a million!

In the old 273 they never had a drip plate or a bolt with a hole and it lived 100k+. This is a factory motor doen by Dodge in 64. But I know most have a hole in them at least the ones I have seen.

I guess these new drip style plates are designed so that the oil will come out the lifter galley drip down the plate and onto to the cam. So the oiler bolt would just be over kill. I know i have read a lot of post from guys leaving the bolt out. But I do not thisnk that is the best solution, even though there are some models with 3 olts. i feel better at the top of the plate with 4 bolts.

:glasses8: