WTB: GMPP TBI / Vortec Intake Manifold

[devind]

That is correct Dave,

I need a intake for the 1996 and up Vortec heads.

What I like about the GMPP intake is it allows the water to flow from all 4 corners of the heads allowing the the water from the back of the heads to flow through the intake towards the thermostat. There are some issues with running Vortec heads with the way the water flows through them. GM eliminated the block bypass when the came out with the Vortec heads and that is why the water pumps have 2 bypass ports one for a constant bypass and one for the heater.

I assume the fact that this intake has the the water passages and egr gas passage cast into it the way that it does is what makes it so expensive. I would imagine the process to cast it is a lot more involved.

Look at the pic I added you can see all the passages on the underside.