superjim 427, I see you have 427 in this car and was wondering if you have had a 454 in this same car with something to compare to?And if so was there a noteable power differance?I have a 454 stock in my 72 chevelle with a 400th 373 gears and I really am seriously thinking about building me a 427.The 454 is a good motor to build but I'm curious about a 427.