I was messing around with dyno2000, and came up with these numbers on a 350:

350 Horsepower @5000 RPM
391 ft.lbs @4000 RPM

Thats with World Products SR Torquers (67cc)
9.5 compression
660 cfm carb
dual plane intake
small tube headers with mufflers
and a Powermax 2050 cam

do those numbers seem right?

 

i've never trusted dd200. i'd say it's somewhat close but not accurate.

 

Did you put in actual head flow numbers in the "custom port flow"?

Take off the small tube headers and add "HP manifolds" They are way to giving for headers in that program.

I dont know what kind of cam you have but dont use "roller" stick to hydraulic for mild cams no matter what platform. DD2000 is a good guestamate, and is fun to mess around with when there is nothing to do.

 

Those numbers sound about right.

 

DD2000 says 500hp for my 383. 1/4 mile results show closer to 465hp.

 

That's interesting.

Using the flow numbers from AFR for the 195 Competition heads and all other info you gave, the most HP I got was 479 @ 5500 RPM. That was using the Roller Cam option.

Using the hyd cam option (which is recommended on "mild street" roller cams), I got 468 @ 5500 RPM.

How did you get 500HP?

 

I downloaded some head and cam files and put them in the custom flow and custom cam section