Santtu

Hi,

I have a question about cooling hoses and how they should be installed / route. Car is -67 Firebird with LS1/LS6 in it. The hose below radiator cap goes directly to throttle body, is this correct? I think that this hose should go to coolant reservoir or just let the coolant drop to ground. I've seen couple of photos, where there is 2 hoses below radiator cap, one for reservoir / ground and one to TB. See attached pcture for more clarification. This was already done, when I purchased this, but I'm not sure if this should be like this.

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Hose from radiator cap should go to a over flow bottle.

Santtu

But what should I do with hoses in TB then? Is there some kind of TB bypass for this problem or is the radiator wrong type for LS-based engines...?

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bypassing the tb or not the steam hose has to be run to the top part of the coolant system. If you do a search you will find many ways people have done this.