I feel like there might be something wrong

You didn't describe the engine, the equipment, the gasoline you use, the current timing setting, the static compression ratio, the condition of the spark plugs, the change in fuel economy, the cranking compression numbers, the loss of coolant, the leaks or noises...
See where I am going?
To get help, you need to provide information. Why should anyone have to ask you all these questions to give you help? Why would you make it hard for people to help you? These forums are full of nice and helpful people but you gave almost nothing for people to help you. You made it harder than it has to be. It is also like trying to get directions from a guy that cannot speak.
Allright I'm sorry I didn't provide any info at all just sort of sharing it :P But here we go :D
Engine is a 78 block 360 with stock internals (I think) with the original for this car 73 340 heads (same as 360) surface planed to oblivion. Engine has new edelbrock performer rpm intake and a 600 cfm volley street warrior. Stock compression I'm guessing. New spark plugs, old once were coal black. I'm running the engine on European 95 octane which is 91/92 in the US I think? The car has some shitty headers that are mangled bad to make them fit and hits the idler arm. They leak in a few places including the gasket on the left side. Stock electronic ignition. Msd wires. Engine does loose coolant but there is a small leak at the radiator so cant know if its leaking anywhere else. When the engine is initially started and is on the choke witch is electric it smokes black. If there is anything I missed I'm sorry and would be happy to provide it.
Thank you :)