 OT: Automatic tranny rebuild ?, how hard |
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| scotty b |
 Mar 29 2008, 10:57 PM
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rust free you say ?  Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None  |
I'm looking for a used 700 R4 for my 53 Chevy. FYI I am auto tranny STOOPID and have limited manual tranny experience. How complicated is it to rebuild and build UP an auto tranny? Looking for something reliable that can easily handle 350 h.p.
Also what in particular problems did the 700 have that needs to be corrected ? |
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| sww914 |
Mar 29 2008, 11:01 PM
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Advanced Member Group: Members Posts: 2,439 Joined: 4-June 06 Member No.: 6,146 Region Association: None |
I might be wrong, but I think that the biggest challenge is getting the right tools. The two A/T rebuilders that I have known weren't rivals of Einstein. I've had several people tell me that they're easy once you figure them out.
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| Dr. Roger |
Mar 29 2008, 11:10 PM
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A bat out of hell. Group: Members Posts: 3,944 Joined: 31-January 05 From: Hercules, California Member No.: 3,533 Region Association: Northern California |
an excellent article here
if it's built right, and you're planning to get the correct overdrive lock-up setup on your throttle linkage, all should be just fine. got pics of this fine truck? (IMG:style_emoticons/default/smoke.gif) QUOTE(scotty b @ Mar 29 2008, 09:57 PM)  I'm looking for a used 700 R4 for my 53 Chevy. FYI I am auto tranny STOOPID and have limited manual tranny experience. How complicated is it to rebuild and build UP an auto tranny? Looking for something reliable that can easily handle 350 h.p. Also what in particular problems did the 700 have that needs to be corrected ? |
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| rusty914 |
Mar 29 2008, 11:15 PM
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Wow this thing handles better than my bug Group: Members Posts: 54 Joined: 6-June 07 From: Longview, WA Member No.: 7,793 Region Association: Pacific Northwest |
order an ATSG book from NAPA or a tranny supply shop for the 700R4. The manual is very complete and will give you a good idea if you can handle it. after that you'll need a good set of snap-ring pliers, picks and assembly goo. a creative mind can dodge the need for the specialty tools.
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| PeeGreen 914 |
Mar 30 2008, 01:02 AM
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Just when you think you're done...wait, there is more..lol Group: Members Posts: 10,219 Joined: 21-September 06 From: Seattle, WA... actually Everett Member No.: 6,884 Region Association: Pacific Northwest 
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eh... it is mostly about the right tools and following directions.
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| crash914 |
Mar 30 2008, 04:42 AM
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its a mystery to me Group: Members Posts: 1,826 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region |
Ditto....not too hard. the valve body is the most complicated part. just lots of passages.
I have never done a 700. Lots of TH 350 and TH400. They will handle the power. Lots of upgrades available. New servos valve springs etc. Get a book and follow along. you can do it... only special tools are for taking the clutch packs apart. A press can help here. if you screw it up, take it to aamco.. |
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| David_S |
Mar 30 2008, 08:47 AM
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Member Group: Members Posts: 430 Joined: 11-May 03 From: Dimmitt, Tx Member No.: 680 Region Association: Southwest Region |
I have built a few of the 700 R4 and a few 4L60 and 4L80's. Not really too difficult. I cant remember what they are for, but there is a set of seals that go onto the input shaft that you HAVE to have the tools to install or else the seals will be stretched too far. Assembly goo .....I had a guy that has rebuilt automatics for about the last 40 years tell me to use nothing but Vaseline on the hard parts and seals, and soak the plates in ATF for several hours before assembly.
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| scotty b |
Mar 30 2008, 11:00 AM
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rust free you say ? Group: Members Posts: 16,375 Joined: 7-January 05 From: richmond, Va. Member No.: 3,419 Region Association: None |
QUOTE(Dr. Roger @ Mar 29 2008, 09:10 PM) (IMG:style_emoticons/default/av-943.gif) Calling this thing a fine truck right now DEFINITELY requiers the (IMG:style_emoticons/default/smoke.gif) smilie |
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| Gint |
Mar 30 2008, 01:54 PM
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Mike Ginter Group: Admin Posts: 16,071 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains  |
QUOTE(crash914 @ Mar 30 2008, 04:42 AM) Ditto....not too hard. the valve body is the most complicated part. just lots of passages. I have never done a 700. Lots of TH 350 and TH400. They will handle the power. Lots of upgrades available. New servos valve springs etc. Get a book and follow along. you can do it... only special tools are for taking the clutch packs apart. A press can help here. if you screw it up, take it to aamco.. I've a T400 question I'm going to PM you Herb. Long standing problem on my 67 C20 that I can't seem to get rid of. |
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| charliew |
Mar 30 2008, 02:07 PM
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Advanced Member Group: Members Posts: 2,363 Joined: 31-July 07 From: Crawford, TX. Member No.: 7,958 |
Transgo has some good upgrade stuff for the 700r4. I use one in a 86 k5 blazer with a 350 ramjet and so far the first one that shifted the hardest went out prematurely from driving to fast with too much weight on a trailer. It was a Jet tranny I ordered from Jegs I think. The one I'm using now is one out of a 91 surburban that had a lot of the better stuff but the transgo stuff seems to be working ok. Most of the problem is I also had the original dif carrier breakup and I had a 12 bolt from a earlier 79 400 sbc blazer setting around so I put that in. Unfortunately it is 308 gears and is geared too high for the OD. It cruises at about 2100 at 80 and that means the pressure in the tranny is lower than what is optimal. Be sure you set the throttle position signal cable correctly for the right pressure and travel or it won't live long. The later 700r4's will have the best starting point for a rebuild actually the 91 is called a 4l60 Check out Transgo, if you find something better let me know. I'm sure this won't be my last tranny build. I also have a 4l80e I want to make into a manual shifter for towing behind a 500 caddy in my 1ton.
I got my pressure gauge kit to set and check the pressure at Bowtie Overdrives they were also helpful. Charliew |
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