I’m not understanding how completely flat footing off the line would give the same speed at the end of the 1/4 than a launch would...
NA 5.3 with mods would make 450HPish at the crank, 14psi of boost with the parasitic loss of the supercharger should around 300-350HP gain, then 20% powertrain loss should put you around 575-625 Wheel HP.
From back on the other pageStock cam?
I forgot about this thread. I built the top end with BTR stuff, added a stage 3 boost cam, no more AFM or DOD, got 105 ID injectors, pinned the crank pulley, did a few oiling upgrades and retuned it for 14lbs. Truck spun really bad on the rollers so I played with it at the track a little. No launch just flat footed it from a 700 rpm dig and it went 12.5 at 110 weight is over 5300. Tuner figures power is a tad over 800 crank with performance numbers and fuel trims. It's a blast to drive, I have put over 20k on it this year alone.
Flat foot, no boost launch will net you a higher mph and slower et. Boosted launch will net a slower speed but quicker et. Assuming no traction loss.
My 6l80 is upset, time for a new one or maybe a build. I'm not sure yet going to trans shop in the morning. She is still going just upset on the 2 to 3 shift under boost. It's still shifting but free revved on me this week for a split second before jumping into gear and blowing the tires off at 60 mph. That wasn't cool, need to fix it before it blows everything up.