camaro z28 help

hello, i recently joined this site in search for help. i have a 1997 camaro z28 and when i was checking it the oil and the water were mixed, and the car is not working properly, it is real shaky when u first turn it on and when i have it running and im waiting for a light, it starts to shake a bit and then stops and then again :disappoin. i think it might have to do with the engine cylinder heads. if anyone has been tru this can u help me out. i want to noe if it is the heads. and if it is how much would it b to repair it. and if they noe of any sites that sells the parts online for a good price. thank you in advance for any help. :smile:

probably blew a head gasket. that would cause the oil and water to mix. do not drive it like this under any circumstances or else you will be in for a lot more damage. coolant mixed in oil will destroy bearings. you can get everything you need to fix it from summitracing.com.