I baselined the car tonight as soon as I got to the track, ran a 13.15@105.68. Density altitude was 957 feet for that pass and raceweight was 3558lbs.
Next pass I ran on the gas, heres the slip (807ft density altitude, roughly the same weight):
1.831 60'
5.283 330
8.083 1/8
87.29 mph
10.489 1000'
12.508 1/4
111.21 mph
The car was running around 11.5:1 A/F on gas so I can probably pick up a few more hp tuning it to low 12s. I was on ET Streets and wished I could have cut a better 60' but the car was spinning everytime the gas hit in 1st. 4.30 gears and an extra 120 ft/lb of torque instantly makes traction difficult.
I am pretty pleased I picked up 5.5mph with a 75shot. It's got a little more in it for me to tune before I go to a 100shot. I think I can ring out another mph with the gas. If we catch a cold spell and I can get out there when the density altitude falls below sea level, I think she will run 12.20-12.30 around 113-114mph with the existing tune.
The calculators are claiming 390hp at the flywheel for the nitrous run and 335hp off the nitrous, so the nitrous contributed 55HP. Thats pretty close to 75 at the crank.
Was fun night, and more important, made it home in one piece. (long story).
Tony
Next pass I ran on the gas, heres the slip (807ft density altitude, roughly the same weight):
1.831 60'
5.283 330
8.083 1/8
87.29 mph
10.489 1000'
12.508 1/4
111.21 mph
The car was running around 11.5:1 A/F on gas so I can probably pick up a few more hp tuning it to low 12s. I was on ET Streets and wished I could have cut a better 60' but the car was spinning everytime the gas hit in 1st. 4.30 gears and an extra 120 ft/lb of torque instantly makes traction difficult.
I am pretty pleased I picked up 5.5mph with a 75shot. It's got a little more in it for me to tune before I go to a 100shot. I think I can ring out another mph with the gas. If we catch a cold spell and I can get out there when the density altitude falls below sea level, I think she will run 12.20-12.30 around 113-114mph with the existing tune.
The calculators are claiming 390hp at the flywheel for the nitrous run and 335hp off the nitrous, so the nitrous contributed 55HP. Thats pretty close to 75 at the crank.
Was fun night, and more important, made it home in one piece. (long story).
Tony
