Are Lockup Converters controled by the ECM or Speedomter related?

If not I might sell mine.

thx

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'84 Camaro w/ Large Jouranl 327 bored .030 over; 3.73 geared Auburn Limited Slip Diff. FlowMaster Muffler w/ Shortie Headers. TH-350 Built Trany Underneath B&M Mega-Shifter. Many Engine compartment Dress Up Mods. Edelbrock High Flow Water Pump w/ Flex-a-Lite Cooling Fan.
It is still under construction @ www.iserv.net~brodgers

[This message has been edited by brockrodgers (edited January 21, 2001).]

 

ECM

 

The converter itself is actually controlled by the tranmission, which receives a signal from the ECM telling when to lock and unlock.

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1984 Camaro Z28 Astral Silver w/ 2 1/2" cowl induction hood
Engine: Decked 385 cid 4 bolt w/ oil cooler, 9.6:1 compression, ARP fasteners, 600 cfm Performer carburetor, Torker II intake, Performer RPM Heads, XE268H cam, Magnum roller tip rockers, MSD6AL ignition, Blaster2 coil, recurved HEI distributor
Exhaust: Terminator headers, Custom 3" TIG welded stainless exhaust, Twister muffler
Transmission: 4L60 w/ Corvette servo, .500 boost valve, TransGo 7-CS clutch springs, 700 PKH pump rings, 700-2 reprogramming kit, Borg-Warner High-Energy frictions & bands, 2400 RPM lockup torque converter
Drivetrain: 2.73:1 limited-slip Dana 44 w/ disc brakes
Tires: Front P225/50VR15 Rear P265/50VR15 Eagles

Because you can always sleep in your car, but you can't drive your house.

 

So if I want to go back to the 700R4 I am going to need it again. Selling now isn't an option.

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'84 Camaro w/ Large Jouranl 327 bored .030 over; 3.73 geared Auburn Limited Slip Diff. FlowMaster Muffler w/ Shortie Headers. TH-350 Built Trany Underneath B&M Mega-Shifter. Many Engine compartment Dress Up Mods. Edelbrock High Flow Water Pump w/ Flex-a-Lite Cooling Fan.
It is still under construction @ www.iserv.net~brodgers

 

From the factory, the ECM controls the lock-up electronicly. Aftermarket kits, such as tci use an added on vacuum switch that controls the lock-up of the converter electronicly. With high vacuum(engine not under load), the vacuum switch turns on the lock-up converter. With low vacuum(engine under load), the vacuum switch unlocks the converter. The tranny is still locked/unlocked electronicly, the vacuum switch takes the place of the computer in determining when to lock/unlock the converter.
Most of the kits I've seen require modification of the internal wiring on the 700r4--it's easy to do and will allow lock-up in 4th gear only. The TCI vacuum switch is adjustable and the kit has provisions to set up a toggle switch to manually control the lock-up.


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82 camaro--original steering wheel, brake/gas pedals, seats--everything else modified
82camaro

 

The kits only require internal modification of the tranmission to make the coverter clutch only lock up in 4th. If you don't mind it locking in lower gears, you don't need to modify the transmission at all.

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1984 Camaro Z28 Astral Silver w/ 2 1/2" cowl induction hood
Engine: Decked 385 cid 4 bolt w/ oil cooler, 9.6:1 compression, ARP fasteners, 600 cfm Performer carburetor, Torker II intake, Performer RPM Heads, XE268H cam, Magnum roller tip rockers, MSD6AL ignition, Blaster2 coil, recurved HEI distributor
Exhaust: Terminator headers, Custom 3" TIG welded stainless exhaust, Twister muffler
Transmission: 4L60 w/ Corvette servo, .500 boost valve, TransGo 7-CS clutch springs, 700 PKH pump rings, 700-2 reprogramming kit, Borg-Warner High-Energy frictions & bands, 2400 RPM lockup torque converter
Drivetrain: 2.73:1 limited-slip Dana 44 w/ disc brakes
Tires: Front P225/50VR15 Rear P265/50VR15 Eagles

Because you can always sleep in your car, but you can't drive your house.

 

Again, you can control all aspects of locking between 4th and non-4th within the eprom...speed and pressure vs rpm for both.