454 365

[Jim Hanig]

Originally Posted by HP HUNTER

Example: 71 454 365 HP Impala, 4003 pounds, F/SA 11.85 index, 1320 divided by 121 mph =
10.90, 121 MPH @ 4003 pounds=553 crankshaft HP, so your looking @ 560-580 corrected STP crankshaft HP should be close. Another example: 402 350 HP, we know these make around 510 corrected STP HP with conservative heads, 510 divided by 412 = 1.23, 1.23 X 470 = 581 HP, not so sure this is a great example, but something else to consider. Another example: 260 CFM @ 28 inches X 2.2 = 572 realistic HP potential.

l think your a bit high the 375 396 engines ,very good ones make 600 range.This engine has has stock heads,not the enhanced ones flow in the 245 range.But thanks for your input.