Torque Convertor lockup switch
07-30-2000, 02:20 AM
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Torque Convertor lockup switch
Ok, just read about this on the tech articles.. Is it worth doing? or will it completely RAPE my 700r4? just wanting some peoples opinion... thanks
-ben
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1987 5.7L L98 GTA-
Current Mods: Gutted Cat, !MAF screens, Gutted Air Box. K&N, Ram Air, Throttle body coolant bypass, AIR system removed, 3" pipe to flowmasters, dual 12" electric fans, 4 core alum radiator, 160* stat, high output h20 pump and alternator, Accel Cap, rotor, 8.8mm wires, Bosch Plats, AFPR, Performance chip(unknown kind), Nitto NT555r 245/50/16 drags rear, Yokohama Advan 032r 245/50/16 fronts, JVC KDSX939 Head unit, Kenwood Excelon 4x6's, Kenwood Excelon 4 way 6x9's, Kenwood 606c amp, Power Acoustic Crossover, 2 JL 10w0's in custom bandpass box.
Best Run: R/T .601; 60' 2.010; 330' 5.990; 1/8 9.154@76.89mph; 1000' 11.997; 1/4 14.489@ 96.78
(only mods at that time were the K&N, exhaust,chip & no drag radials)
#077 Central Florida F-Bodies (http://www.cffb.com)
-ben
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1987 5.7L L98 GTA-
Current Mods: Gutted Cat, !MAF screens, Gutted Air Box. K&N, Ram Air, Throttle body coolant bypass, AIR system removed, 3" pipe to flowmasters, dual 12" electric fans, 4 core alum radiator, 160* stat, high output h20 pump and alternator, Accel Cap, rotor, 8.8mm wires, Bosch Plats, AFPR, Performance chip(unknown kind), Nitto NT555r 245/50/16 drags rear, Yokohama Advan 032r 245/50/16 fronts, JVC KDSX939 Head unit, Kenwood Excelon 4x6's, Kenwood Excelon 4 way 6x9's, Kenwood 606c amp, Power Acoustic Crossover, 2 JL 10w0's in custom bandpass box.
Best Run: R/T .601; 60' 2.010; 330' 5.990; 1/8 9.154@76.89mph; 1000' 11.997; 1/4 14.489@ 96.78
(only mods at that time were the K&N, exhaust,chip & no drag radials)
#077 Central Florida F-Bodies (http://www.cffb.com)
07-30-2000, 02:37 AM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Used in moderation I wouldn't expect it to appreciably shorten the life of the transmission. I wouldn't abuse it though.
07-30-2000, 07:59 AM
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Car: FORMULA 350
Engine: ZZ4
Transmission: 700R4
i did this mod about five years ago. i 90% of the time run the first three gears with the lockup off. fourth is allways on. from my experience i think you will be ok.
07-30-2000, 08:12 AM
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Car: 1987 Z28 Convertible
Engine: 305 TPI
Transmission: 5-speed
Manually locking up the converter will usually not help your E/T's (0.1 - 0.2 seconds at most if at all). The abuse that's inflicted on the converter itself and the transmission's 3-4 clutch pack, is not worth the minimal gain (if any).
Lock up torque converters are not designed to be manually locked up at WOT, except the multi-disk Vigilante. As one person put it, "If you burn the bulb twice as bright, it was last only half as long."
The only exception to locking up a converter is in a turbo or supercharged engine, where the horsepower on the top end is used to pull the car through third gear (D) through the traps, thereby increasing mph.
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Willie
Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 113 mph (50-hp nitrous).
http://www.ozemail.com/au/jca69/mods/williesz/willie.html
1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.
[This message has been edited by Willie (edited July 30, 2000).]
Lock up torque converters are not designed to be manually locked up at WOT, except the multi-disk Vigilante. As one person put it, "If you burn the bulb twice as bright, it was last only half as long."
The only exception to locking up a converter is in a turbo or supercharged engine, where the horsepower on the top end is used to pull the car through third gear (D) through the traps, thereby increasing mph.
------------------
Willie
Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 113 mph (50-hp nitrous).
http://www.ozemail.com/au/jca69/mods/williesz/willie.html
1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.
[This message has been edited by Willie (edited July 30, 2000).]
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