Pontiacs with Vintage Air, heater nipple on head or intake?

[Josh69]

Are you guys using the standard head location for your heater hose, or going to the intake (water crossover) next to the thermostat housing?



I got my Kauffman heads this week and the heater outlet on each head is threaded to accept either a pipe plug or a 5/8" heater nipple.

I have a fitting on my intake next to the thermostat that is unused, should I use that, or the back of the head? Is one more efficient than the other (hotter/colder)?

I know it's a seemingly simple question, but they make such a big deal about the sensitivity of the Gen IV that I want it to be right due to the heater bypass valve being right there. The Camaro's are on the intake and that is what the inx are for.

[astroracer]

Use the fitting at the back of the head for your heater line and the one in the manifold for your temp sender. I don't think you want heater hose running all over the top of the motor, right?
Mark

[Josh69]

No, but it would easily run next to the other one from the water pump to the pass side inner fender.

I should clarify, my Hurricane intake manifold has two pipe fittings in the crossover, one on the right (occupied by temp sensor), one on the left of the thermostat, filled with a pipe plug. I can use the one on the left, ala Chevy, or the one in the back of the head.

I'll just use the normal location unless I hear a compelling reason not to.