[T Smith]

Originally Posted by Marv D

Ditto.
Your not going to get honest, reliable, pump gas friendly 500HP for less than $6500 - $8000 (depending on what you have to start with) Those that offer it, demand a dyno sheet of THAT motor (not some old sheet from one they built 'like it' and dyno'd on some hand controled POS dyno once upon a time), DEMAND a dyno sheet from a SuperFlo 901 computer controlled dyno (or comprable) on YOUR motor or you get the proverbial 'about' 500HP.

$1800 heads
$1100 valve train
$600-$800 for block prep (quality machine work isn't cheap)
$2000 for forged crank, decent 6" rods, SRP forged pistons w/ balancing
$800+ for intake and carb
$400-($1000 for custom ) 1-3/4 - 1-7/8" headers


ooops we already passed $6k and we haven't gotten to gaskets, fuel system, a good pan to keep windage away from the rotating assembly, dyno tunning, converter..... it adds up EXTREMELY fast if you want to do it 'right' .

There is a lot of unbalanced crap Eagle crank / Scat rod w/ unknown bolts/ KB piston packages out there. It will work, but for how long if you intend to 'USE' this 500HP. With mallory metal as high s it is right now balancing of some of these packages will get you another $300 invested.

Sorry, not trying to be negative here, just REALISTIC.

Truth, and some of these numbers are pretty darn low...