Here is my chevy would make more power.There is just so much more available parts for the chevy.Now lets make a better comparison.396 chevelle vs a 383 r.r.close to the same advertised h.p..car weight is close.What you think??You want to compare the ls6,A closer rival would be a max wedge.Even A better comparison that I would like to see is an apple- apple test.take a 440 and a 454,build them the same.Comp. ratio,cam size,intake,carb, etc.basicly same modification to both engines,I think the mopar would come out on top.Anyone board with some engines laying around