I did a search but didn't find what I was looking for. the engine is gonna be carb'd. Where do I run the coolant crossover tube to on the front of the heads. As far as I can gather, It's gotta be conected to the radiator somehow? Enlighten me please. Thnks

 

I've seen somewhere that people are tapping a port into the top of the water pump. Can't confirm that this works....

 

That don't sound like fun....... Ha.

 

I've seen some cap it, others connect it to the cooling system. Tapping the water pump is common. Connecting to the radiator or cooling lines seem to work too. You can get a inline fitting for your cooling hose that already has a hole tapped in it too.

 

There is info on this in the "FAQ and Hall of Fame Sticky" at the top of the forum. Also search this forum for "Coolant Steam Vent" and you will find quite a bit of info. I drilled and tapped the top of my water pump and that worked fine. Others have found connectors from Corvettes or from jagsthatrun.com that will splice it into the radiator hose. In some cases GM has connected it to a heater hose. Lots of options

Pat

 

got some pics of the water pump method? If i go that route, wanna see how it's done.

 

There are pictures in the FAQ thread in the Sticky at the top of the forum. Start with post #40, then look for posts from shifty, he does quite a bit on it.

 

I welded a barb to the water neck

 

What kind of vehicle are you putting the Engine into? I used the stock LT1 Radiator and there is a fitting on the Radiator to run the Vent Tube too like on the LT1's.

 

It is a 1968 camaro. Haven't bought the radiator/fan setup yet.

 

Here are a few pics of the way I did my late model pump. I think the guys with the earlier LS1 pump tap the flat boss beside the upper hose part of the casting. It is not difficult to do. It may sound silly, but I rolled a piece of cardboard into a tube and pushed it into the upper hose tube. Then I used heavy grease on the drill and tap to keep any shavings from going into the pump. By drilling and tapping right through the cardboard tube, there's not much chance of getting anything in the pump. I would caution you to measure carefully to place the hole just past the point where the steel tube for the upper hose is pressed into the casting. Good luck! Ron