Hey guys! New to this site and the Firebird world! I just bought an all original #'s matching '68 Firebird coupe with 79k that's been sitting in a garage unmoved since '82. Motor is seized. Just wondering if any of you can give me some ideas to try to get the motor possibly freed up before I pull it and have it rebuilt. i've heard you can try putting penetrating oils down the spark plug holes and let it sit for a few days, then try turning the crank bolt to see if it'll break free? Comments, suggestions, and idea welcome and appreciated!
Also, I have all the original owner's manuals, the little tag from the original dealer, and just found the build sheet under the back seat, plus have sent away for the PHS documents. From what I know of the history and running all the numbers and decides on my end...it appears completely original drivetrain. It only has the 350 motor in it which wasn't a very powerful engine. My question is this: when I have the motor rebuilt, if needed, does it hurt the value of the car putting superior internals in the motor for hp and torque gains as long as I keep the block a matching # block? Not looking to build a 600+ hp motor, but more than the original 260 hp or whatever the 350's were would be nice. Maybe 330-400ho range. Input?
