not 100% i know my dad said it was out of a 72 grand ville. im new to the car so i dont know much about it. he never drove it, he was always busy with work and stuff aroudn the farm. so this sat in a barn for many years. we would take it out once in a great while, wash it up and drive it but then put it right back in the barn. i will ask him what exactly is in it and get back to you. but i know she is pushing 550 hp from what he has told me. this is one fast car. i have drove it once so far (only because it has no insurance and no collector plates on it yet) i did take her for a spin down the road a few days ago, only went 80, not a very straight road.