coolent lines

doing a 5.3 swap into my 97 k1500 and i cnat figure out what to do with the coolant line coming off the trottle body can i just plug it or do i need to hook it up thanks

Just plug it up. All it's used for is to keep the throttle body from freezing up in extreme temps, and the coolant running through there just makes you have higher IAT's, and that hurts performance.

what? Ducky, you plugged your steam port line? You don't like your new V8?

The water line going through the throttle body, one side comes from the steam crossover line on top of the head, the other end went into a water line fitting on the radiator. You can bypass the throttle body with a piece of hose going directly from the steam line coming off of the head and going straight to the radiator or a fitting in the coolant stream somewhere other than an overflow bottle.

haha I love my throttle body. I just thought he asked what he is supposed to do with his coolant line coming off of the throttle body. I guess I should have been more specific and just said to run the hose directly from the radiator to the steel cross over tubing. haha it took me so long to figure out what those things were and where they went

do you have pics of where i could put it?

I drilled and tapped a 1/8" tapered pipe thread hole by the heater hose fittings on the water pump.

http://i47.photobucket.com/albums/f1...headers022.jpg

I'll never pass up the opportunity to show off the OBS long tubes. :laugh:

I plugged mine, they're a waste. Those lines are only there to heat the throttle body, nothing else. That's why the rear lines got plugged with the LS6 intake. You can purchase a set of rear block off's and install them on the front and it looks really neat. If there was an issue blocking them the rear LS6 holes would have temperature issues and they don't. :cool:

If you do that, when you fill the radiator leave the plugs off or loose until water pours freely from the vents. You have to get the air out of the top of the heads or it will overheat.

I won't argue that, I leave the front 2 loose when I fill the radiator and bleed the air out.