10.54 @ 122 on motor
Aug 19, 2012 | 01:10 PM
#1
10.54 @ 122 on motor
What fun weekend!!!
Friday night right off the trailer went a slow 11.6x. This is a completely new combo. 13-1 418 makinh 546rwhp, Powerglide trans, and backhalf/4-link with a CM 12 point cage.
Made a couple adjustments to the shocks, from then on it was 10.7x to 10.6x that night with only changes being slight AFR changes and the DA changed. I am out of gear about 1,200-1,250 feet.
So yesterday went like this:
Off the trailer with Friday nights settings.
60' - 1.576
1/8 - 6.713 @ 104.659
1/4 - 10.566 @ 122.66
Had my buddy take it for a ride, I'm 185lbs, he is 155lbs, never driven my truck. I have a window switch set to shift the truck, so, do a burn out, put it back in low gear, stage, and leave. He foot braked it rather than the trans brake, he has never used one at the track.
60' - 1.60x
Don't know the 1/8
10.6x @ ??
Then it all went to poo poo for a while. It was getting hot, 93-99*.. The test and tune during the day had very little traffic, and it seemed to go away for me, and my other buddy who was running a 70's Chevelle running almost exactly what I was (10.5x-10.7x on motor with same 60's).
60' - 2.306... I left of the brake, it blew the tires off, shifted, so I had to ride it out past to 60' mark, it just wouldn't be right
60' - 1.861
1/8 - 7.131 @ 103.346
1/4 - 11.021 @ 122.109
Did not lay over, forgot to plug in IAT sensor. Noticed it was pretty rich, and thought that might have been the culprit.
60' - 1.991
1/8 - 7.341 @ 103.410
1/4 - 11.221 @ 122.685
Did not lay over again, and rich again. Hmmm, something is up.
Rescaled my fueling table to lean it out as it was HOT (97* ambient / DA roughly 2700), loosened up the front 2 clicks, dropped tire pressure from 17lbs to 16lbs.
60' - 1.581
1/8 - 6.732 @ 103.762
1/4 - 10.608 @ 122.247
Touched the fuel up a pinch more, checked front shock travel, I have about 8" of upward travel and was using almost all of it so I tighten up one click. I raced an S10 on this pass. I hole shotted him but boy was it close. His is in red.
.526 - .541
60' - 1.539 - 1.674
1/8 - 6.673 @ 103.984 - 6.815 @ 108.115
1/4 - 10.54 @ 122. 293 - 10.539 @ 129.079
.015 hole shot led me to a .014 win
Changed the plugs to some NGK 9's that a buddy brought up for me. Put the bottle in, changed the tune and went to line it up. The same S10 saw me and new I went to go get the bottle and asked if I wanted to go again, bottle to bottle. I knew I was done as he told me what it runs on bottle, and I know I am out of gear, but what the heck, I don't have to win
I left on the motor, full timing off the brake, reached up and armed the system, being it is on a WOT switch, it hit right away. Just a little 57 jet (100 shot or so at 900lbs pressure).
60' - 1.521 - 1.496
1/8 - 6.301 @ 112.336 - 6.135 @ 118.44
1/4 - 10.216 @ 111.814 - 9.509 @ 142.462
I am very happy with how the truck ran, and what it ran. I wanted better than a 10.90, figured it had a 10.70, and hoped, wished it had a 10.5x in it. I think with a 29.5-30" slick, I would keep my gearing the same but the tire growth would get me through the traps without nosing over. With what it ran, I see no reason it can't go 10.4x once that is sorted out, and if I am truly lucky, maybe even a 10.3x..
Friday night right off the trailer went a slow 11.6x. This is a completely new combo. 13-1 418 makinh 546rwhp, Powerglide trans, and backhalf/4-link with a CM 12 point cage.
Made a couple adjustments to the shocks, from then on it was 10.7x to 10.6x that night with only changes being slight AFR changes and the DA changed. I am out of gear about 1,200-1,250 feet.
So yesterday went like this:
Off the trailer with Friday nights settings.
60' - 1.576
1/8 - 6.713 @ 104.659
1/4 - 10.566 @ 122.66
Had my buddy take it for a ride, I'm 185lbs, he is 155lbs, never driven my truck. I have a window switch set to shift the truck, so, do a burn out, put it back in low gear, stage, and leave. He foot braked it rather than the trans brake, he has never used one at the track.
60' - 1.60x
Don't know the 1/8
10.6x @ ??
Then it all went to poo poo for a while. It was getting hot, 93-99*.. The test and tune during the day had very little traffic, and it seemed to go away for me, and my other buddy who was running a 70's Chevelle running almost exactly what I was (10.5x-10.7x on motor with same 60's).
60' - 2.306... I left of the brake, it blew the tires off, shifted, so I had to ride it out past to 60' mark, it just wouldn't be right
60' - 1.861
1/8 - 7.131 @ 103.346
1/4 - 11.021 @ 122.109
Did not lay over, forgot to plug in IAT sensor. Noticed it was pretty rich, and thought that might have been the culprit.
60' - 1.991
1/8 - 7.341 @ 103.410
1/4 - 11.221 @ 122.685
Did not lay over again, and rich again. Hmmm, something is up.
Rescaled my fueling table to lean it out as it was HOT (97* ambient / DA roughly 2700), loosened up the front 2 clicks, dropped tire pressure from 17lbs to 16lbs.
60' - 1.581
1/8 - 6.732 @ 103.762
1/4 - 10.608 @ 122.247
Touched the fuel up a pinch more, checked front shock travel, I have about 8" of upward travel and was using almost all of it so I tighten up one click. I raced an S10 on this pass. I hole shotted him but boy was it close. His is in red.
.526 - .541
60' - 1.539 - 1.674
1/8 - 6.673 @ 103.984 - 6.815 @ 108.115
1/4 - 10.54 @ 122. 293 - 10.539 @ 129.079
.015 hole shot led me to a .014 win
Changed the plugs to some NGK 9's that a buddy brought up for me. Put the bottle in, changed the tune and went to line it up. The same S10 saw me and new I went to go get the bottle and asked if I wanted to go again, bottle to bottle. I knew I was done as he told me what it runs on bottle, and I know I am out of gear, but what the heck, I don't have to win
I left on the motor, full timing off the brake, reached up and armed the system, being it is on a WOT switch, it hit right away. Just a little 57 jet (100 shot or so at 900lbs pressure).
60' - 1.521 - 1.496
1/8 - 6.301 @ 112.336 - 6.135 @ 118.44
1/4 - 10.216 @ 111.814 - 9.509 @ 142.462
I am very happy with how the truck ran, and what it ran. I wanted better than a 10.90, figured it had a 10.70, and hoped, wished it had a 10.5x in it. I think with a 29.5-30" slick, I would keep my gearing the same but the tire growth would get me through the traps without nosing over. With what it ran, I see no reason it can't go 10.4x once that is sorted out, and if I am truly lucky, maybe even a 10.3x..
Last edited by LIL SS; Aug 19, 2012 at 01:33 PM.
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