advice please confused about 60 ft.
#1
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Here is the long story shortened, I have finished my 4l80 swap and picked it up from the tuner on thursday,, took it to the track on friday. Car is a 383 dynoed at 477hp 443tq with converter unlocked. I made multiple passes and here is what is going on. I have a converter that was built for spray, On the street it goes to 3k footbraking, with the transbrake on and no rev limiter it will go to 4200. I launched the car at
2500 on the limiter, and it ran a 7.5 at 95 mph with a 1.87 60 ft.
2200 and the car slowed down.
3000 and went 7.41 at 96 mph with a 1.72 60ft.
I am not sure why my 60s are so terrible.
This was on a set of SLICKS running 14-12 lbs of pressure
SUSPENSION: umi kmember with stock a-arms and brakes,, Strange adjustable shocks, set to 0 Rear is a QP 9" with 3.75 gears, QA shocks set to 4 on the right and 5 on the left, aftermarket lower arms, relocation brackets ( in lowest hole) aftermarket panhard, and torque arm. Pinion angle is at 0 degrees.
Dont know the weight of the car, its a 98 T/A with all the hvac stuff gone, egr and the likes, and my fat butt in the car.
Right now the only thing I can think of is that the converter is sloppy on the motor, Maybe I should up the RPMS even more? I have some video I can post, if needed, the car did not spin the tires.. Any help would be appreciated, as I am dissappointed.
2500 on the limiter, and it ran a 7.5 at 95 mph with a 1.87 60 ft.
2200 and the car slowed down.
3000 and went 7.41 at 96 mph with a 1.72 60ft.
I am not sure why my 60s are so terrible.
This was on a set of SLICKS running 14-12 lbs of pressure
SUSPENSION: umi kmember with stock a-arms and brakes,, Strange adjustable shocks, set to 0 Rear is a QP 9" with 3.75 gears, QA shocks set to 4 on the right and 5 on the left, aftermarket lower arms, relocation brackets ( in lowest hole) aftermarket panhard, and torque arm. Pinion angle is at 0 degrees.
Dont know the weight of the car, its a 98 T/A with all the hvac stuff gone, egr and the likes, and my fat butt in the car.
Right now the only thing I can think of is that the converter is sloppy on the motor, Maybe I should up the RPMS even more? I have some video I can post, if needed, the car did not spin the tires.. Any help would be appreciated, as I am dissappointed.
#5
Race your car!
iTrader: (50)
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just keep running it there, your driveshaft builder will love you for it when you're bringing it back for new ujoints on a regular basis.
These cars ARE NOT LEAF SPRING CARS AND DO NOT NEED THIS MUCH PINION ANGLE PERIOD!
I don't know how many times this has been covered!
Ron I would put the thing on the transbrake, foot to the floor and let it eat at whatever it will go to... anything less with a converter built for nitrous, and running it n/a is not going to get you anywhere!
At the power you have and the weight of your car, you should be able to see a high 10 out of it with the converter the way it is.
But.. I wouldn't worry about that too much... unless you're making motor runs to make sure the n/a tune is right I wouldn't waste your time.... put the bottle in the car and let it eat.
These cars ARE NOT LEAF SPRING CARS AND DO NOT NEED THIS MUCH PINION ANGLE PERIOD!
I don't know how many times this has been covered!
Ron I would put the thing on the transbrake, foot to the floor and let it eat at whatever it will go to... anything less with a converter built for nitrous, and running it n/a is not going to get you anywhere!
At the power you have and the weight of your car, you should be able to see a high 10 out of it with the converter the way it is.
But.. I wouldn't worry about that too much... unless you're making motor runs to make sure the n/a tune is right I wouldn't waste your time.... put the bottle in the car and let it eat.
#6
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Yes,,, These were just motor passes,, didnt spray the car, because it was the first time at the track on the new engine trans setup, was trying to learn a little about the cars manners. Was just real dissappointed in it.
I sure hope that the converter is the culprit for those crappy 60 fts.
Thanks for the advice fellas,, any more will be appreciated, I hope to take it to the track this friday also,, and I will remove the rev-limiter and make some motor passes again,, and see what happens with the pedal to the floor as you recommend Jason.
I sure hope that the converter is the culprit for those crappy 60 fts.
Thanks for the advice fellas,, any more will be appreciated, I hope to take it to the track this friday also,, and I will remove the rev-limiter and make some motor passes again,, and see what happens with the pedal to the floor as you recommend Jason.
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#9
9 Second Club
iTrader: (33)
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[QUOTE=JL ws-6;15513924]just keep running it there, your driveshaft builder will love you for it when you're bringing it back for new ujoints on a regular basis.
These cars ARE NOT LEAF SPRING CARS AND DO NOT NEED THIS MUCH PINION ANGLE PERIOD!
I don't know how many times this has been covered!
Hahahahaha! I found this out the hard way...........
These cars ARE NOT LEAF SPRING CARS AND DO NOT NEED THIS MUCH PINION ANGLE PERIOD!
I don't know how many times this has been covered!
Hahahahaha! I found this out the hard way...........
#11
Race your car!
iTrader: (50)
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Do some reading and then when you do change it and the car runs better, make sure you post the results back up.
Ron... try it without the 2 step on.. put it right up on the converter and let it eat.
Then, put the 2 step back on and spray it.... you'll have to have a doctor pry the smile off your face.