Just installed a ele/water pump on my 95 lt1.
How can I block off the hole where the stock pump use to connect to the timing cover ?

 

50 cent piece (half dollar coin) and some JB weld.

 

There should have been a freeze type plug that came with the electric water pump.

If not, you can get one at an auto parts store, put aviation gasket sealer on it and drive it in with a dowel and a hammer.

 

What size Freeze plug ?

 

I you can't measure it with calipers, then I would take it with you to the auto parts store and get the one that fits the best.

That's probably better than measuring it anyways.

 

The freeze plug that comes with the ewp is to plug the back of the water pump.

Like stated earlier, you can plug the hole in the timing cover with a coin (some guys use 50 cent pieces; I couldn't find one so I used a quarter) and JB Weld.

Of course you could always weld it too.

 

And if you use a freeze plug it will probably stick out too far and now the opti won't fit.
The Kennedy 1/2 Dollar is a perfect fit. Made in the USA too.

Karl

 

I think Chad Golen put me on to this and it works great and looks good. You tap the hole with an NPT tap (can't remember the size) and then pug it with one of the anodized (colored) performance parts type allen socket pipe plugs. Put some thread sealer on it before installing.

WD