Quote Originally Posted by viking
This was assuming hyd lifters and open headers
The problem with some of the computer software is it does not give you the ability to input all the data unless you have the software that costs over $1,000 dollars.
In the 60's some of the factory 327's did 350 hp.
This was with a cam that was .447/.447 and duration at .050 was 222/222.
Also the intake manifolds have come a long way in 35+ years.
So he has a 383 which is 56 cubes larger than the 327 a larger cam with .480/.480 lift and a duration at .050 of 230/230 and better induction.
I.M.O. this would put him right at 400 hp.