DanielRicany

Oh Jesus. This sounds like it's going to be a nightmare. Running hot and misfire.... head gasket leak? Again? Lol.

Did the car actually overheat when the gasket was leaking before? Did they shave the head down?

I would start with a leak down test to make sure they did the gasket correctly.

A leak down test will tell you if that gasket is sealing properly and if the valves were adjusted properly.

Vic'89

That is why I don't want anyone to touch my car but me.

They replaced head gaskets, right ? so they took off everything from the front of the motor, plus the intake, heads and headers. anything could be messed up.

Vic

desertmike1

I did My LT Heads several years ago, shortly there after my "Cabin Heat" started blowing Luke warm air, turned out to be crap had accumulated inside of the Heater core do to the Top end job, and all of the gasket scraping, thread cleaning etc.

To fix this you need to gently Back Flush the heater core by disconnecting the heater hose's, and running water from a garden hose through the core.