Drag Truck Part 2 "blackmark redemption"

yellow rose said
I agree. If you use the ET number instead of the MPH number, you won’t know which number is off.

For example let’s say you are running 12.00 at 130 MPH. You will KNOW that is a hook issue. If you are running a 12.00 at 99 MPH would tell me the car is hooking like it’s on cogs, but the engine is down on power.

It much easier if you have dyno numbers so you know what power you have. Using the ET to determine what the car should run doesn’t work, because you can run a 12 flat at 130 and a 10.25 at 130 did the engine power change? No, but the ET did. You can have wildly different ET’s for the same MPH.

That’s why I always use MPH to determine what the ET should be. Even with a bunch of tire spin the MPH won’t change much.
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My math is 1320 divided by MPH. Tells me what ballpark the car should be running. My car runs 13.3's at 99 mph. Divide 1320 by 99 and BINGO - 13.3. Very hard to get a street car (especially with a open rear end) to run the ET per MPH. Usually true street cars don't have enough gear/converter/traction to make it work.