Another 700r4 question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ron · 06-17-2003, 01:53 PM

I have a 700r4 (4L60) in my 69 SWB. The problem I have is that it won't down shift like I want. For example: your doing 50 mph, it's in 4th with lock-up, you slow down to 25 mph for a school zone or small town, than when it's time to speed up your still in 4th with lock-up. It always down shifts when you hit the gas but its annoying as hell. I use the brake switch to control the TC. So, I need better lock up control and I need it to down shift sooner. I do not want to use a toggle as my wife drives this truck and this would confuse her. I think if I were to do this conversion again I would use the 4L60E with the computer. Thanks.

Slammed67 · 06-17-2003, 02:19 PM

Is your TV cable adjusted right? Do you have the correct TV cable?

Longhorn Man · 06-17-2003, 04:14 PM

Look on B&M's web site...they have a pretty good kit to control your lock up converter.

Ron · 06-17-2003, 05:16 PM

I do have the B&M kit but have not installed it yet. It will help but the fact that it won't downshift on it's own is the real problem.

Longhorn Man · 06-17-2003, 05:19 PM

If not mistaken, it will not down shift onless it comes out of lock up first.

fatfords · 06-17-2003, 06:00 PM

Ron,
Like Slammed69 said-check your TV cable.
Longhornmail-I think it will shift with the TCC solenoid in lock. I just took mine apart and the guy who had it b4 had installed a check ball so it would lock all the time. As soon as line pressure increased to a certain level, the TCC would lock in 2nd, 3rd and 4th. The only noticeable shift was 4th, as it lugged my tired old 350 pretty bad.
I don't know if the B&M kit has the vacuum switch in it, but I really like the way mine shifts since I added mine. Got it from a late 80's sub and it can be wired it in series with the power or ground.

Good Luck,
Kent

Longhorn Man · 06-17-2003, 06:37 PM

OK, thanks for correcting me.

1-PU70 · 06-17-2003, 09:26 PM

Im running the B&M lock and I think its the best way to go. NO Vacume switches, NO togal switches and NO brake light switch. It works of the speedo cable. You can get lock up in forth ant any speed. I have mine set to lock up at 60MPH.When it drops 10MPH it unlocks, so mine unlocks at 50MPH. You cant much easyer then this. Only thing its a little pricy.

Ron · 06-18-2003, 12:13 AM

1-PU70. I got the B&M set-up used from a friend. Like I said, I have not yet installed it. It came with no directions so I need to contact B&M about getting those. The wires are a little messed up also. Does your tranny down shift on it's own? Like if you coast down to 30mph are you still in 4th? Thanks for everyones response

1-PU70 · 06-18-2003, 07:25 PM

It downshifts fine. It also downshifts when you stomp on it too.

06-17-2003, 01:53 PM	#1
Ron Registered User Join Date: Feb 2000 Location: Zillah Wa. USA Posts: 394	Another 700r4 question I have a 700r4 (4L60) in my 69 SWB. The problem I have is that it won't down shift like I want. For example: your doing 50 mph, it's in 4th with lock-up, you slow down to 25 mph for a school zone or small town, than when it's time to speed up your still in 4th with lock-up. It always down shifts when you hit the gas but its annoying as hell. I use the brake switch to control the TC. So, I need better lock up control and I need it to down shift sooner. I do not want to use a toggle as my wife drives this truck and this would confuse her. I think if I were to do this conversion again I would use the 4L60E with the computer. Thanks. __________________ '69 SWB '76 International "Terra" "Hooked on holiday beer"

06-17-2003, 02:19 PM	#2
Slammed67 Progress = 0% Join Date: Nov 2001 Location: Kansas City, MO Posts: 2,108	Is your TV cable adjusted right? Do you have the correct TV cable? __________________ Jason - '67 GMC swb \| '57 Bel-Air 4dr hardtop \| '56 210 4dr Wagon \| 2000 GMC Sierra

06-17-2003, 05:16 PM	#4
Ron Registered User Join Date: Feb 2000 Location: Zillah Wa. USA Posts: 394	I do have the B&M kit but have not installed it yet. It will help but the fact that it won't downshift on it's own is the real problem. __________________ '69 SWB '76 International "Terra" "Hooked on holiday beer"

06-17-2003, 06:00 PM	#6
fatfords Registered User Join Date: Sep 2002 Location: DFW, TX Posts: 350	Ron, Like Slammed69 said-check your TV cable. Longhornmail-I think it will shift with the TCC solenoid in lock. I just took mine apart and the guy who had it b4 had installed a check ball so it would lock all the time. As soon as line pressure increased to a certain level, the TCC would lock in 2nd, 3rd and 4th. The only noticeable shift was 4th, as it lugged my tired old 350 pretty bad. I don't know if the B&M kit has the vacuum switch in it, but I really like the way mine shifts since I added mine. Got it from a late 80's sub and it can be wired it in series with the power or ground. Good Luck, Kent __________________ '56 F-100 (w/all GM stuff) Lookin' for another parts chaser! '05 GMC crew cab

06-17-2003, 09:26 PM	#8
1-PU70 Registered User Join Date: Apr 2000 Location: Bradenton, FL Posts: 1,036	Im running the B&M lock and I think its the best way to go. NO Vacume switches, NO togal switches and NO brake light switch. It works of the speedo cable. You can get lock up in forth ant any speed. I have mine set to lock up at 60MPH.When it drops 10MPH it unlocks, so mine unlocks at 50MPH. You cant much easyer then this. Only thing its a little pricy. __________________ 1970 CST/10 402,700R4,3:73 posi,AC,PS,PB,TLT,PW,Buckets with heaters

06-17-2003, 04:14 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Look on B&M's web site...they have a pretty good kit to control your lock up converter.

06-17-2003, 05:19 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	If not mistaken, it will not down shift onless it comes out of lock up first.

06-17-2003, 06:37 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	OK, thanks for correcting me.

06-18-2003, 12:13 AM	#9
Ron Registered User Join Date: Feb 2000 Location: Zillah Wa. USA Posts: 394	1-PU70. I got the B&M set-up used from a friend. Like I said, I have not yet installed it. It came with no directions so I need to contact B&M about getting those. The wires are a little messed up also. Does your tranny down shift on it's own? Like if you coast down to 30mph are you still in 4th? Thanks for everyones response __________________ '69 SWB '76 International "Terra" "Hooked on holiday beer"

06-18-2003, 07:25 PM	#10
1-PU70 Registered User Join Date: Apr 2000 Location: Bradenton, FL Posts: 1,036	It downshifts fine. It also downshifts when you stomp on it too. __________________ 1970 CST/10 402,700R4,3:73 posi,AC,PS,PB,TLT,PW,Buckets with heaters

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