Before we were smart, the Hemi we raced would shoot ducks at 6500 in the 1/4 mile, we only ran 1/8 mile tracks, we re jetted, changed plugs, wires and cap. We were running ONE holly blue with the cross ram and Hollys, was a while before the light came on that we DIDNT have enough fuel in the first place. Check your carbs and fuel supply. How did I learn? I was wrenching on the buddy’s 69 Stang with a 588 cu in Shotgun Roush engine, twin dominators at over 830 hp, popping on the top end same way (8.90 @152) a pro stock guy clued us in, you guessed it, one holly blue. In 1983 no less.