Originally posted by RTStabler51: I believe Greg, because he's a blunt straight forward guy, BUT, with that said, I am just baffled at the .5 reduction in ET, but no improvement in MPH. I know Greg will prove my nay saying....
Best run to best run I actually improved nearly 1 mph from last spring.
Also the bulk of my time was made by half track. From half track on I was only a tenth or so quicker.
I was 75lbs lighter and I also hooked up in first and second.
It just goes to show you that my trap speed was maxed based on HP to weight because of all the traction issues in 1st and 2nd. I didn't spin once in second this time out. A good indication of that is the 2nd run's 2.18 60' time but 9.0 1/8 @ 80.8 vs last spring's 2.17 60' time but only 9.17 1/8 and slightly faster 81.4x mph. Though the second run's mph could be slightly lower from the rear tire??? With the same 60' time it shows the car was much "quicker" from 60' to 660' even with the poor launch and messy 1-2 shift. The extra spark tuning I did over the summer obviously added some mid range torque.
I made more ground right at the start which directly equals quicker ET and less time spinning the tires which can inflate trap speeds.
Last spring my quickest run (13.94) only trapped 101.1 but my fastest trap came on a run a couple tenths slower. The majority of my runs I trapped in the 100.5 - 101 range. My previous 1/8 mile numbers were 80.5 to even a 81.8 mph. The higher the mph the slower the launch and 330' times were too. Less ground covered early so more time to accelerate to speed.
To plot the new & old best runs against each other.
New up by .13 to 60' New up by .30 to 330' (65% of the gain from launch through the 2-3 shift!) New up by .38 to 660' New up by .43 to 1000' New up by .47 to 1320'
That's 1 tenth gained on the top end showing that the bulk of my ET gain was mainly traction and being a chunk lighter in weight.
Even the extra trap speed gain was pretty much all done in the first 660' with nearly a direct carry over to the end. Considering past half track is all HP to weight verses drag it's not surprising I only picked up about another .2 mph verses my previous numbers when compared to the first 660'.
Who knows? Maybe I picked up the nail before the staging lanes before run 1 and I would have trapped 103mph??? I only checked my air pressure waiting in the tech line. Okay 103's not likely but still...
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.