Plus the older 283 comes with a forged crank. I have 2-283's that came out of the 63 Impala with the forged crank.
You can make the 350 rev like the 327, you just need to lighten up the rotating mass. That's why the 327 revs better, it just gets to the power ban quicker.
I want the LSX motor, you can make a 454 CID small block

NOW THAT'S A MOTOR!!!!! you get the cubic inch displacement but in a lighter faster revving motor.