disconnecting lockup on th350c? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ocbaud · 11-03-2003, 01:48 AM

i dont need or want the lockup on my tranny. the line gets in the way and i never noticed the rpm's drop before.

so can i just remove all the wiring and hoses that run it?

Slonaker · 11-03-2003, 12:47 PM

The vacuum hose that goes to the transmission needs to stay. You would have it with or without a lockup convertor. AFAIK, the only extra thing going to the transmission that is related to the lockup is the wiring harness. If you disconnect it, save the wiring harness in case you ever decide to put it back on. I had to buy one at the dealer and just the plug cost me $27.

I have heard both that is is okay to disconnect it and that it is not. I guess it depends on who you talk to. I have no personal experience with it. I left mine hooked up. What can it hurt?

Slonaker

jimfulco · 11-13-2003, 02:32 AM

My Sub has had an unhooked T350C for over 4 years with no problems.

crackajacka · 11-13-2003, 02:42 AM

the wires on my plug are bare. so i guess mine never did work and its a figment of my imagination that it was ever working

1985K10 · 11-13-2003, 11:30 PM

I know if you disable the lockup on a 700R4 the tranny will burn up quick because the small lockup TC generates a ton of heat when its unlocked. I think thats how my first one died, or maybe it was the constant power braking.....

loweredd · 11-18-2003, 05:14 PM

I love my 350C!

crackajacka · 11-18-2003, 05:34 PM

how would u go about hooking it back up, i know ive got a square trans filter, and i think thats only for regular th350's but, im just wondering how u would go about hooking it back up

loweredd · 11-18-2003, 05:56 PM

the filters are the same cracka

cochino12 · 11-18-2003, 05:58 PM

Can someone explain what the lockup is, does?

loweredd · 11-18-2003, 06:00 PM

drops the RPM's, cause it "locks up" the convertor. Then your running 1:1 I think.

*1FaastC10* · 11-18-2003, 06:20 PM

lowerdd, you're absolutely right. under normal conditions there is a bit of slippage in a TC, inside a lockup TC there's actually a clutch plate that engages with the housing of the converter, eliminating the slippage and giving a true 1:1 ratio.

loweredd · 11-18-2003, 08:06 PM

Yea!! LOL. I know I get good mileage with that tranny and my 2.73:1 gears!!

11-03-2003, 01:48 AM	#1
ocbaud Garage Queen Material Join Date: Oct 2002 Location: USA Posts: 4,129	disconnecting lockup on th350c? i dont need or want the lockup on my tranny. the line gets in the way and i never noticed the rpm's drop before. so can i just remove all the wiring and hoses that run it?

11-03-2003, 12:47 PM	#2
Slonaker Insert Witty Text Here Join Date: Oct 2002 Location: San Antonio, TX Posts: 3,415	The vacuum hose that goes to the transmission needs to stay. You would have it with or without a lockup convertor. AFAIK, the only extra thing going to the transmission that is related to the lockup is the wiring harness. If you disconnect it, save the wiring harness in case you ever decide to put it back on. I had to buy one at the dealer and just the plug cost me $27. I have heard both that is is okay to disconnect it and that it is not. I guess it depends on who you talk to. I have no personal experience with it. I left mine hooked up. What can it hurt? Slonaker __________________ '86 Chevy C10 (Sold 04/19/13 ) Stock '01 Silverado

11-13-2003, 02:42 AM	#4
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	the wires on my plug are bare. so i guess mine never did work and its a figment of my imagination that it was ever working __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

11-13-2003, 11:30 PM	#5
1985K10 Registered User Join Date: Oct 2003 Location: CT Posts: 315	I know if you disable the lockup on a 700R4 the tranny will burn up quick because the small lockup TC generates a ton of heat when its unlocked. I think thats how my first one died, or maybe it was the constant power braking..... __________________ Anthony 07 Tahoe LT 70 Chevelle 450HP 383-TH400 77 GMC Royal Sierra~Resto in progress~

11-18-2003, 05:34 PM	#7
crackajacka Stylin Join Date: Sep 2001 Location: Tuttle, OK Posts: 620	how would u go about hooking it back up, i know ive got a square trans filter, and i think thats only for regular th350's but, im just wondering how u would go about hooking it back up __________________ Ive been traveling for some time, with my fishin pole and my bottle of shyne. Most Girls like finished products and just dont understand what a good addiction does for you http://www.paulwall.us/

11-13-2003, 02:32 AM	#3
jimfulco Registered User Join Date: May 2003 Location: Shreveport LA Posts: 3,170	My Sub has had an unhooked T350C for over 4 years with no problems.

11-18-2003, 05:14 PM	#6
loweredd www.loweredd.com Join Date: Aug 2002 Location: Struble IA Posts: 808	I love my 350C!

11-18-2003, 05:56 PM	#8
loweredd www.loweredd.com Join Date: Aug 2002 Location: Struble IA Posts: 808	the filters are the same cracka

11-18-2003, 05:58 PM	#9
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	Can someone explain what the lockup is, does? __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

11-18-2003, 06:00 PM	#10
loweredd www.loweredd.com Join Date: Aug 2002 Location: Struble IA Posts: 808	drops the RPM's, cause it "locks up" the convertor. Then your running 1:1 I think.

11-18-2003, 06:20 PM	#11
1FaastC10 Account Suspended Join Date: Oct 2002 Location: Elkhart, IN Posts: 6,399	lowerdd, you're absolutely right. under normal conditions there is a bit of slippage in a TC, inside a lockup TC there's actually a clutch plate that engages with the housing of the converter, eliminating the slippage and giving a true 1:1 ratio.

11-18-2003, 08:06 PM	#12
loweredd www.loweredd.com Join Date: Aug 2002 Location: Struble IA Posts: 808	Yea!! LOL. I know I get good mileage with that tranny and my 2.73:1 gears!!



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