BEST AUTOMATIC TRANNY LAUNCH ?
I ♥ Acer
Joined: May 2007
Posts: 186
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RE: BEST AUTOMATIC TRANNY LAUNCH ?
ORIGINAL: navyscott
Plenty durable. I've heard of plenty of guys well into the 300 range for rwhp (pretty good with basic bolt-ons) and have had no issues. Plenty of guys out there too with 6-8 psi boost running on stock ATs. I would't imagine there would be any serious issues up to the 430 rwhp range as long as you don't just try to beat it to death. Running a good trans cooler is a must on any AT putting any power to the ground. Actually, there are plenty of other parts that would give up long before the trans would, such as the factory driveshaft. The AT should be able to handle pretty much the same power as the MT (stock for stock). My plans for next year include a vortech H.O. setup, trans cooler, 1 piece driveshaft and 3.73 gears. Wheels and tires sre probably going to happen too. Worse comes to worse and the TCI5r55s should be out by then.
Plenty durable. I've heard of plenty of guys well into the 300 range for rwhp (pretty good with basic bolt-ons) and have had no issues. Plenty of guys out there too with 6-8 psi boost running on stock ATs. I would't imagine there would be any serious issues up to the 430 rwhp range as long as you don't just try to beat it to death. Running a good trans cooler is a must on any AT putting any power to the ground. Actually, there are plenty of other parts that would give up long before the trans would, such as the factory driveshaft. The AT should be able to handle pretty much the same power as the MT (stock for stock). My plans for next year include a vortech H.O. setup, trans cooler, 1 piece driveshaft and 3.73 gears. Wheels and tires sre probably going to happen too. Worse comes to worse and the TCI5r55s should be out by then.
1st Gear Member
Joined: Aug 2007
Posts: 75
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RE: BEST AUTOMATIC TRANNY LAUNCH ?
This is mainly for the MT guys, not sure it would work on an auto but MSD is coming out with a little helper for launching.
http://www.msdignition.com/new_products/8734.html
Holds your RPMs at whatever you set it to until you release the clutch - wondering if it could be modified at all to be triggered by the brake pedal.
http://www.msdignition.com/new_products/8734.html
Holds your RPMs at whatever you set it to until you release the clutch - wondering if it could be modified at all to be triggered by the brake pedal.
I ♥ Acer
Joined: May 2007
Posts: 186
From:
RE: BEST AUTOMATIC TRANNY LAUNCH ?
ORIGINAL: LMM1967
This is mainly for the MT guys, not sure it would work on an auto but MSD is coming out with a little helper for launching.
http://www.msdignition.com/new_products/8734.html
Holds your RPMs at whatever you set it to until you release the clutch - wondering if it could be modified at all to be triggered by the brake pedal.
This is mainly for the MT guys, not sure it would work on an auto but MSD is coming out with a little helper for launching.
http://www.msdignition.com/new_products/8734.html
Holds your RPMs at whatever you set it to until you release the clutch - wondering if it could be modified at all to be triggered by the brake pedal.
don't think it works with autos...
3rd Gear Member
Joined: Feb 2006
Posts: 632
From:
RE: BEST AUTOMATIC TRANNY LAUNCH ?
3.73 gears, tune with shift points at 6200 RPM, drag radials, UCA/LCAs
Power brake to 2500 RPM then floor it !!!! Should get sub 2 sec. 60ft easy
First time I really hooked I said "so that is traction" !!! On the street forget it you just sit and spin !!
Power brake to 2500 RPM then floor it !!!! Should get sub 2 sec. 60ft easy
First time I really hooked I said "so that is traction" !!!
On the street forget it you just sit and spin !! 
Mish-ogynist
Joined: Nov 2007
Posts: 3,784
From: Helena, MT
RE: BEST AUTOMATIC TRANNY LAUNCH ?
hmm.. that was my concern... on the street if i just floor it i just spin.. i recently tried power braking it in a parking lot and basically all i could figure was trying to hold the gas only just under 2k rpm made me not mash the gas as fast when i released the brake resulting in a better launch...private property area ofcourse 
I ♥ Acer
Joined: May 2007
Posts: 186
From:
RE: BEST AUTOMATIC TRANNY LAUNCH ?
ORIGINAL: Mishri
hmm.. that was my concern... on the street if i just floor it i just spin.. i recently tried power braking it in a parking lot and basically all i could figure was trying to hold the gas only just under 2k rpm made me not mash the gas as fast when i released the brake resulting in a better launch...private property area ofcourse
hmm.. that was my concern... on the street if i just floor it i just spin.. i recently tried power braking it in a parking lot and basically all i could figure was trying to hold the gas only just under 2k rpm made me not mash the gas as fast when i released the brake resulting in a better launch...private property area ofcourse
kinda letting it grab hold of the gear just a little before letting loose?
4th Gear Member
Joined: Feb 2007
Posts: 1,005
From: Frederick, MD
RE: BEST AUTOMATIC TRANNY LAUNCH ?
Honestly, keeping the car in drive works best for me. I dont usually street race, but when I happen to floor the car from a roll at 20 or 30 mph, it still starts to spin those back tires a little. The torque converter definetly had something to do with it, because it didnt do that before. Also, I noticed that the torque converter made the car shift much harder into gear. It is almost scary as to how hard the car will shift sometimes. I think this is mainly because of the tune though. I want to go to the track and try launching from a lower rpm, such as 1500 or 2000 and see what happens.
4th Gear Member
Joined: Feb 2007
Posts: 1,005
From: Frederick, MD
RE: BEST AUTOMATIC TRANNY LAUNCH ?
Turbo Stang, I have tried that too, do you mean like gasing it slightly while the car still seems to be in first then flooring it as the rpm's gradually get higher? If so, I would believe that most cars would still spin... right?
I ♥ Acer
Joined: May 2007
Posts: 186
From:
RE: BEST AUTOMATIC TRANNY LAUNCH ?
ORIGINAL: tonkpils555666sas
Turbo Stang, I have tried that too, do you mean like gasing it slightly while the car still seems to be in first then flooring it as the rpm's gradually get higher? If so, I would believe that most cars would still spin... right?
Turbo Stang, I have tried that too, do you mean like gasing it slightly while the car still seems to be in first then flooring it as the rpm's gradually get higher? If so, I would believe that most cars would still spin... right?
Mish-ogynist
Joined: Nov 2007
Posts: 3,784
From: Helena, MT
RE: BEST AUTOMATIC TRANNY LAUNCH ?
honestly couldn't say for sure.. I haven't had enough practice.. for my feel I've had the best launch just easing my foot on the pedal (like takes about 1 sec to get to the floor)... but i've only had the car for not even 2 months so im sure a more experienced a/t driver could say what would be the best street launch..