I've never heard of any specific year having head warp problems.
This can happen to almost any vehicle when it has been badly
overheated. Warp = Mucho Heat = A bad thing.
FriPilot
This is a pretty major job. I suggest picking up a Haynes or Chilton manual for your car and following the procedures they recommend. FriPilot
The torque specifications for the cylinder heads on a 2005 Pontiac Grand Am with a 3.4L engine are typically 37 ft-lbs (50 Nm) for the initial torque, followed by a 90-degree turn on each bolt. It's essential to follow the correct tightening sequence and procedure to ensure proper sealing and avoid warping. Always refer to a service manual for the most accurate and specific guidelines.
no
This question needs to be clarified. What block and heads do you want to install? Chevy, Pontiac, Olds....which one?
The primary difference between 455 Pontiac heads and 400 Pontiac heads lies in their design and specifications, which affect performance and compatibility. The 455 heads typically have larger combustion chambers, allowing for higher displacement and more airflow, which can enhance power output. In contrast, 400 heads generally have smaller chambers and different port configurations, which can influence compression ratios and torque characteristics. Additionally, the valve sizes and flow capabilities may vary, making them suitable for different performance builds.
No.
NO not even close.
Take heads off and replace the gaskets. Make sure to check the heads for warping. Get a Haynes Manuel for step by step info.
I put an Edelbrock Torquer manifold on my 302 in a 1977 Cobra II Mustang , it didn't have a back water jacket and later my stock heads warped ( I SUSPECT that was the cause of the heads warping )
No, they are completely different.
Summit!! see link
115in-ibs