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

Tim64 · 03-02-2008, 07:26 PM

Hey Guys,
I bought a lock-up kit for my 700r4 from Southern Rods & Parts off of eBay this week. For the most part the installation instructions are pretty straight forward, but I do have a question, and of course they have no Tec support today, so I thought maybe one of you could help me out. The pressure switch that comes with the kit is to be installed in the 4th gear pressure port on the passenger side of the tranny right behind the 4th gear servo. Now some models don't have this port (of course mine would be one of these) and the instructions call for drilling and tapping the servo cover, and installing the pressure switch there. Drilling and tapping the cover is no problem, but I would like to remove it do so. It just doesn't make sense to me to drill it on the tranny and have chips being pushed inside the tranny. I don't know how to take this cover off. Can someone give me a little help with this?
Thanks,
Tim

ampsyco · 03-02-2008, 07:58 PM

im not sure how that cover comes off, but i know that the cover is aluminum. if you drill slow all the metal your drilling should be pulled out by the drill bit.

ampsyco · 03-02-2008, 08:00 PM

doesnt that servo cover have a snap ring on it ??? i seem to remember that for some reason.

ampsyco · 03-02-2008, 08:03 PM

im looking at a picture of one on the web. it looks like its got a snap ring holding it in. it should come out with a pick or pocket screwdriver.

Tim64 · 03-02-2008, 08:06 PM

Ampsyco,
Can you post a link to that pic. I don't remember seeing a snap ring, but I could have missed it.
Thanks,
Tim

ampsyco · 03-02-2008, 08:09 PM

http://images.google.com/imgres?imgu...3DL1n%26sa%3DN

look at the picture of the housing. looks like a groove for a ring.

they also sell a kit with the servo and it shows a snap ring in the pic.

ampsyco · 03-02-2008, 08:09 PM

http://www.oregonperformancetransmis...NX-77767K.html

try this one. sorry.

Tim64 · 03-02-2008, 08:22 PM

My case does have those two notches like the pic. I'm guessing that's where you'd go in with a screwdriver to pry it out. I wonder if adding one of those new servos would be a good thing to do? If you haven't already guessed this is my first 700r4 tranny.
Thanks for the help,
Tim

ampsyco · 03-02-2008, 08:24 PM

i've only done a couple of those myself, but its been a long time.

good luck. let us know how you make out.

Tim64 · 03-02-2008, 08:24 PM

I will thanks!

**Chevy Fleetside** · 03-02-2008, 08:38 PM

I like hooking up a switch that I control. I can lock up 3rd gear going up mountain roads. Makes for a nice climb. We do have lots of mountains here.

62 short step · 03-02-2008, 09:54 PM

Hey Tim64 I have the same kit, you do not drill a hole in that cover. Let me get a pic of where mine is.

62 short step · 03-02-2008, 10:03 PM

Here is where it needs to be. I like this kit, it works great.

Tim64 · 03-03-2008, 01:47 AM

Hey 62 short step,
I was going by what the directions they sent me said. As you can see in the pics here that I've posted I don't have quite the same set-up as you. I wish to hell I did, but like most things I do, they're never easy. If you still have your instructions see if they don't say "1. Remove pipe plug from 4th gear pressure port. If your 700r4 does not have a 4th gear pressure tap, you can drill & tap the servo cover."
Needless to say I'm confused. Oh by the way, what is the hose I'm holding in the last pic? Vacuum ?
Tim

62 short step · 03-03-2008, 02:06 AM

Well that sucks!! I see what you mean. I would try to take the cover off then, I wish I knew how I would tell you. The hose is a pressure bleed off, like on axles. There is no vaccum on the 700r4, that I'm aware of.

62 short step · 03-03-2008, 02:10 AM

It looks like from the pics you can get a flat tip or needle nose pliers and take out the c- clip thats holding it in. Post this in the dravetrain section. Those guys know what they are doing!! Good luck man!!

Tim64 · 03-03-2008, 02:51 AM

So the hose just hangs there? I'm sure I can make this thing work, if I have to I'll wait til Monday and call them back.
Thanks,
Tim

**ChiefRocka** · 03-03-2008, 03:23 AM

I believe that cover in under spring tension, if I rmemeber correctly.

62 short step · 03-03-2008, 03:41 AM

Quote:

Originally Posted by Tim64

So the hose just hangs there? I'm sure I can make this thing work, if I have to I'll wait til Monday and call them back.
Thanks,
Tim

I believe so. I don't have a hose on mine!

ampsyco · 03-03-2008, 03:56 AM

the hose is a vent. for fluid or air. it just kind of sits there.

shortbed70 · 03-03-2008, 09:46 PM

I am getting ready to do the same thing my trans doesdn't have the pressure port but I will be installing a sonnax servo while I'm in there. The hose is a vent take that long black extension off you don't need it and the cover comes off with a snap ring but its a pain in the ... you could put some grease on the bit and drill slow and then when you tap use grease.

Tim64 · 03-04-2008, 08:26 PM

Okay Guys,
Here's the scoop. I just got off the phone with a Tec guy down at Southern Rods, and he said the cover has to come off. Held on by snap ring. Drill and tap it right in the center. He said they were pretty easy to take off (heard that before) I guess I'll be finding out. I'll post some pics once I get it off.
Tim

Baby Blue 66 · 03-04-2008, 10:30 PM

If I remember correctly, you press in on the cover to gain access to the retainer, I think I had to use a large pry par for leverage (it was in the truck when I did this). There is a large retainer ring, (like a circlip that is used for the piston pin in small 2 stroke engines) which you can take out using a pair of small screwdrivers. Once that is out the cover should just pull out. You will probably need a new o-ring as well to get a good seal when it is reassembled. Good luck!

62 short step · 03-04-2008, 10:49 PM

Quote:

Originally Posted by Tim64

Okay Guys,
Here's the scoop. I just got off the phone with a Tec guy down at Southern Rods, and he said the cover has to come off. Held on by snap ring. Drill and tap it right in the center. He said they were pretty easy to take off (heard that before) I guess I'll be finding out. I'll post some pics once I get it off.
Tim

Good luck with it Tim64! Let us know how it went.

shortbed70 · 03-05-2008, 07:05 AM

Just took an extra one I had and drilled today and I would recomend taking some off the lip around where you drill the hole. I took off about half of the lip and the swith fits right in flush. Now I just have to take off the real trans install my servo and re install cover and wire.

03-02-2008, 07:26 PM	#1
Tim64 Registered User Join Date: Aug 2007 Location: Vandalia, Ohio Posts: 396	700r4 lock-up question Hey Guys, I bought a lock-up kit for my 700r4 from Southern Rods & Parts off of eBay this week. For the most part the installation instructions are pretty straight forward, but I do have a question, and of course they have no Tec support today, so I thought maybe one of you could help me out. The pressure switch that comes with the kit is to be installed in the 4th gear pressure port on the passenger side of the tranny right behind the 4th gear servo. Now some models don't have this port (of course mine would be one of these) and the instructions call for drilling and tapping the servo cover, and installing the pressure switch there. Drilling and tapping the cover is no problem, but I would like to remove it do so. It just doesn't make sense to me to drill it on the tranny and have chips being pushed inside the tranny. I don't know how to take this cover off. Can someone give me a little help with this? Thanks, Tim

03-02-2008, 07:58 PM	#2
ampsyco Registered User Join Date: Aug 2006 Location: florida Posts: 142	Re: 700r4 lock-up question im not sure how that cover comes off, but i know that the cover is aluminum. if you drill slow all the metal your drilling should be pulled out by the drill bit.

03-02-2008, 08:00 PM	#3
ampsyco Registered User Join Date: Aug 2006 Location: florida Posts: 142	Re: 700r4 lock-up question doesnt that servo cover have a snap ring on it ??? i seem to remember that for some reason.

03-02-2008, 08:03 PM	#4
ampsyco Registered User Join Date: Aug 2006 Location: florida Posts: 142	Re: 700r4 lock-up question im looking at a picture of one on the web. it looks like its got a snap ring holding it in. it should come out with a pick or pocket screwdriver.

03-02-2008, 08:06 PM	#5
Tim64 Registered User Join Date: Aug 2007 Location: Vandalia, Ohio Posts: 396	Re: 700r4 lock-up question Ampsyco, Can you post a link to that pic. I don't remember seeing a snap ring, but I could have missed it. Thanks, Tim

03-02-2008, 08:09 PM	#6
ampsyco Registered User Join Date: Aug 2006 Location: florida Posts: 142	Re: 700r4 lock-up question http://images.google.com/imgres?imgu...3DL1n%26sa%3DN look at the picture of the housing. looks like a groove for a ring. they also sell a kit with the servo and it shows a snap ring in the pic.

03-02-2008, 08:09 PM	#7
ampsyco Registered User Join Date: Aug 2006 Location: florida Posts: 142	Re: 700r4 lock-up question http://www.oregonperformancetransmis...NX-77767K.html try this one. sorry.

03-02-2008, 08:22 PM	#8
Tim64 Registered User Join Date: Aug 2007 Location: Vandalia, Ohio Posts: 396	Re: 700r4 lock-up question My case does have those two notches like the pic. I'm guessing that's where you'd go in with a screwdriver to pry it out. I wonder if adding one of those new servos would be a good thing to do? If you haven't already guessed this is my first 700r4 tranny. Thanks for the help, Tim

03-02-2008, 08:24 PM	#9
ampsyco Registered User Join Date: Aug 2006 Location: florida Posts: 142	Re: 700r4 lock-up question i've only done a couple of those myself, but its been a long time. good luck. let us know how you make out.

03-02-2008, 08:24 PM	#10
Tim64 Registered User Join Date: Aug 2007 Location: Vandalia, Ohio Posts: 396	Re: 700r4 lock-up question I will thanks!

03-02-2008, 08:38 PM	#11
Chevy Fleetside Registered User Join Date: Sep 2006 Location: San Francisco Posts: 4,782	Re: 700r4 lock-up question I like hooking up a switch that I control. I can lock up 3rd gear going up mountain roads. Makes for a nice climb. We do have lots of mountains here. __________________ "A man and his truck, what a beautiful thing" 65 Short Fleetside BBC 65 Long Fleetside 283 3 on the tree for now. my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536

03-02-2008, 09:54 PM	#12
62 short step Senior Member Join Date: Aug 2005 Location: Greenwell Springs, Louisiana Posts: 2,882	Re: 700r4 lock-up question Hey Tim64 I have the same kit, you do not drill a hole in that cover. Let me get a pic of where mine is.

03-02-2008, 10:03 PM	#13
62 short step Senior Member Join Date: Aug 2005 Location: Greenwell Springs, Louisiana Posts: 2,882	Re: 700r4 lock-up question Here is where it needs to be. I like this kit, it works great. Attached Images

03-03-2008, 01:47 AM	#14
Tim64 Registered User Join Date: Aug 2007 Location: Vandalia, Ohio Posts: 396	Re: 700r4 lock-up question Hey 62 short step, I was going by what the directions they sent me said. As you can see in the pics here that I've posted I don't have quite the same set-up as you. I wish to hell I did, but like most things I do, they're never easy. If you still have your instructions see if they don't say "1. Remove pipe plug from 4th gear pressure port. If your 700r4 does not have a 4th gear pressure tap, you can drill & tap the servo cover." Needless to say I'm confused. Oh by the way, what is the hose I'm holding in the last pic? Vacuum ? Tim Attached Images

03-03-2008, 02:06 AM	#15
62 short step Senior Member Join Date: Aug 2005 Location: Greenwell Springs, Louisiana Posts: 2,882	Re: 700r4 lock-up question Well that sucks!! I see what you mean. I would try to take the cover off then, I wish I knew how I would tell you. The hose is a pressure bleed off, like on axles. There is no vaccum on the 700r4, that I'm aware of.



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03-03-2008, 02:10 AM	#16
62 short step Senior Member Join Date: Aug 2005 Location: Greenwell Springs, Louisiana Posts: 2,882	Re: 700r4 lock-up question It looks like from the pics you can get a flat tip or needle nose pliers and take out the c- clip thats holding it in. Post this in the dravetrain section. Those guys know what they are doing!! Good luck man!!

03-03-2008, 02:51 AM	#17
Tim64 Registered User Join Date: Aug 2007 Location: Vandalia, Ohio Posts: 396	Re: 700r4 lock-up question So the hose just hangs there? I'm sure I can make this thing work, if I have to I'll wait til Monday and call them back. Thanks, Tim

03-03-2008, 03:23 AM	#18
ChiefRocka Hollister, CA. Join Date: Sep 2006 Location: Hollister, Ca. Posts: 6,150	Re: 700r4 lock-up question I believe that cover in under spring tension, if I rmemeber correctly. __________________ John What the Heck is that ?? CURRENT BUILDS: 62 BurbMaster Other Builds: My '63 C-10,LWB,CC,BBW '06 HD StrAight Axle Swap Father/Son '67 C-20, LQ9,4L80,Bagged,8-Lugger !!Good Friend Richard's Build AMERICAN CUSTOMS & CLASSICS (831) 630-1965 www.ACCHOLLISTER.com ACC on FACEBOOK "Rest in Peace, Mom & Dad ... I will see you again someday!"

03-03-2008, 03:56 AM	#20
ampsyco Registered User Join Date: Aug 2006 Location: florida Posts: 142	Re: 700r4 lock-up question the hose is a vent. for fluid or air. it just kind of sits there.

03-03-2008, 09:46 PM	#21
shortbed70 Registered User Join Date: Mar 2002 Location: Forney TX Posts: 4,512	Re: 700r4 lock-up question I am getting ready to do the same thing my trans doesdn't have the pressure port but I will be installing a sonnax servo while I'm in there. The hose is a vent take that long black extension off you don't need it and the cover comes off with a snap ring but its a pain in the ... you could put some grease on the bit and drill slow and then when you tap use grease. __________________ Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274

03-04-2008, 08:26 PM	#22
Tim64 Registered User Join Date: Aug 2007 Location: Vandalia, Ohio Posts: 396	Re: 700r4 lock-up question Okay Guys, Here's the scoop. I just got off the phone with a Tec guy down at Southern Rods, and he said the cover has to come off. Held on by snap ring. Drill and tap it right in the center. He said they were pretty easy to take off (heard that before) I guess I'll be finding out. I'll post some pics once I get it off. Tim

03-04-2008, 10:30 PM	#23
Baby Blue 66 Registered User Join Date: Oct 2006 Location: Western NY Posts: 19	Re: 700r4 lock-up question If I remember correctly, you press in on the cover to gain access to the retainer, I think I had to use a large pry par for leverage (it was in the truck when I did this). There is a large retainer ring, (like a circlip that is used for the piston pin in small 2 stroke engines) which you can take out using a pair of small screwdrivers. Once that is out the cover should just pull out. You will probably need a new o-ring as well to get a good seal when it is reassembled. Good luck!

03-05-2008, 07:05 AM	#25
shortbed70 Registered User Join Date: Mar 2002 Location: Forney TX Posts: 4,512	Re: 700r4 lock-up question Just took an extra one I had and drilled today and I would recomend taking some off the lip around where you drill the hole. I took off about half of the lip and the swith fits right in flush. Now I just have to take off the real trans install my servo and re install cover and wire. __________________ Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274 Last edited by shortbed70; 03-05-2008 at 07:05 AM.

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