How much boost? The last blown(14.71 with two blower 1150 Dominator carbs) iron block aluminum headed 426 Hemi I dyno tested liked 33 degrees total timing with 7.0 lbs of boost on CA pump gas, it didn't like 25 degrees to start with with 12 lbs of boost with C16 race gas We went from 12% under drive with the 7 lbs at 7300 RPM, I reversed the pulleys which gave us 13% overdrive and ended up reaching peak HP at 6500 RPM on the race gas. I tried advancing the timing to 27 degrees which was the wrong way to go I should have probally started at 20 or 22 degrees with the O.D. tune up and went up, OH WELL, thats called getting hands on experiece
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
The last blown(14.71 with two blower 1150 Dominator carbs) iron block aluminum headed 426 Hemi I dyno tested liked 33 degrees total timing with 7.0 lbs of boost on CA pump gas, it didn't like 25 degrees to start with with 12 lbs of boost with C16 race gas 
We went from 12% under drive with the 7 lbs at 7300 RPM, I reversed the pulleys which gave us 13% overdrive and ended up reaching peak HP at 6500 RPM on the race gas. I tried advancing the timing to 27 degrees which was the wrong way to go 
