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...
It's around 625 wheel. The calculator I use says 586 awd hp. I was being careful how hard I ran it bc Zach and I drove it up there. Soo, it was heat soaked like a mofo, I believe IAT's were 135 once I got out of staging lanes and lined up and up to 165 to 170 at the end of the 1/4. I need to take it out on a trailer and see what it will do with a normal IAT of 80 or 85. The heat kills the power.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.
I can tell you on a diesel, you will trap slower if you just flat foot launch off idle with no boost, but if you leave with too much boost and spin, you will typically trap higher. I have no idea how a positive displacement supercharger on a gas engine reacts differently compared to a turbo diesel in that test though.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.
LOL. Been there done thatMy 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.