600 HP on pump gas is not hard with a 505 stroker, Eddy RPM CNC and a good inatke and a 1050 domintor or a 4150 1000 HP carb will get you there easily, maybe a little more My bracket 505 made 687 on a Studka dyno at 2500 ft above sea level using race gas though, 12.5 to 1 comp. ratio. drop the compression to 10.5 or so with the same combination on pump gas will make 625 to 650 HP pretty easily See my post on my 518 dyno test this week PM me if you want
Last edited by Cab_Burge; 02/10/1202:05 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
My bracket 505 made 687 on a Studka dyno at 2500 ft above sea level using race gas though, 12.5 to 1 comp. ratio. drop the compression to 10.5 or so with the same combination on pump gas will make 625 to 650 HP pretty easily
See my post on my 518 dyno test this week 
PM me if you want 
