I have just started automotive classes in my local tech school and our first project is to dismantle a motor. well my buddies and I picked out the only V-8 in the motor room, but we cant figure out what kind of motor it is. It seems to be pretty old due to the massive amounts of crud still on it. we managed to find 5L cast into it the side of the block, it had a 2 barral carb, there is whats left of an egr system, so were are thinking 80ish?? The firing order was cast into the intake, which I do not have. Are there any other markings that I can look for to tell what what kind of motor this is and where might chevy have cast gm or any other markings into the block.