My stock-bottom-end 5.9 Magnum with heavily ported Edelbrock heads, port-matched RPM intake, custom-grind Racer Brown hyd roller cam (.525" lift, 222* at .050" intake), 750 cfm Street Demon and Hedman shorty headers made 283 HP uncorrected at the wheels through a 904 trans at 5000' above sea level on a Dynojet (I think?) chassis dyno. I think even at sea level it'll be a tough call to say your 318 will make 300 at the wheels based on the size of the cam and the fact you're running through a 727 (huge power absorber). Not impossible but, not very likely IMO. Unless you are a wizard at porting iron heads lol.
