Actually booradley, a lot of the articles I read claim that for instance a stock nissan sentra bottom end can support up to 400 hundred hp, through nitrous, turbo, whatever. That's from 140 hp. For a 5.7 v8 to match the efficiency of a sentra 1.8, it would have to make about 440 hp. If you figure that the 5.7 has 3.2 times the displacement, it would have to put out approximately 1200 hp to match the strength of a nissan sentra engine. I have never heard of any v8 going to that level without new pistons, con rods, rings, crankshaft, valvetrain, arp studs, and numerous other items. in the end, you keep the block and buy all new pieces to mount on it.
Yes, you can argue all day about no replacement for displacement, but for sheer efficiency and strength of design, the sentra wins hands down.
as far as camaros and such, the new 350z costs less than $28,000 and matches the performance of the old 300z without twin turbos. 3.5 liter with 287 hp. try a $500 dollar nitrous kit on that.
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