Manifold Heat control Valve

[trapster]

Mine appears to be pretty well stuck in one position, and I fear that is the closed position.

Short of disassembling the entire manifold and sawing this thing out, how do I fix this?

I have tried vise grips, hammering, liquid wrench. It will not budge.

I fear that this is affecting my gas mileage and performance, be that as it may.

 

['64 Cuda]

Have you tried PB Blaster? It's a penetrating lubricant.

 

[player1up]

Have you tired while the manifold is hot? Like an O2 sensor, might be easier to move when it's at temp. Might try a torch and some wax if the PB blaster doesn't work, but I'd be surprised if it didn't, it may take a couple of applications but it should do the trick.
The little round puck should turn counter clockwise ( top of the puck toward the head and bottom away from the head ) to open

Correct me if I'm wrong guys but if it's stuck in the closed position the motor will have no top end right?