I have a 396 in my nova thats pretty healthy and im pretty happy with it. My dad wants to buy it and put in his nova. If I go ahead and do this I was thinking about a 454 to put back in my nova. My nova has a Th400 trans 3500 stall and 373 gears, so I would like to built a 454 that compliment the stuff I allready have.What years of 454 engines should I be looking at? do 454s make good power with say 9.5 compression? I know my 396 has 11.5 pistons in it with a 533 lift cam and its a damn good runner. I dont want to build a slug! Any ideals? 450 hp would be great if If I can do it without spending a fortune.