dyno?
 

:?: does anyone know a of a site that calculates mods. as you change things. Example: 350 sbc stock, add headers what is the change, add cam what is the change etc. :?: :?: :?:

Not an easy thing to do, because most increases come from a combination of headers, intake, cam and carbs. A few yrs. ago Trick Flow was advertising 75 HP increase with their twisted valve heads, but in order to get this gain you had to have all the other add ons.

JMO

Zip.