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#1 |
Registered User
Join Date: Jul 2003
Location: North Texas
Posts: 265
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Ok you guys with the 700R4s or 2004Rs? How do you connect the speedometer up to the
overdrive trannies? If I'm not mistaken, they all have an electric speedometer outputs, right? I'd really like to have an overdrive, but if I have to spend $300 dollars for a computer to read my speed, I'll have to rethink this. I want to keep the original mechanical speedometer. I've searched all 35 pages of posts here but couldn't find any information about how to handle this issue, except for the $300 dollar computer. But I've thought I'd seen some type of a converter mentioned before. Thanks.
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'69 C/10 Short Wide 350/400/AC/Tilt/Tach |
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#2 |
Registered User
Join Date: Feb 2002
Location: orange, tx usa
Posts: 167
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Ive got a 1983 model 700r4 and i dont have the electonic you are talking about. I did have to go with a longer cable though. I had a th350 and swapped it out to 700r4, and had to change driveshaft lenght as well. I like mine lots,
Guy
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guypm 1971 SWB Fleetside/350 performer rpm heads &intake/ holley 750dp/1.5roller rockers/MSD6a/700r4 1650stall/one piece driveshaft/3.73 open/dynomax ceramic coated headers/3chamber flowmasters/ |
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#3 |
Registered User
![]() Join Date: Jan 2001
Location: Middlesex, NC
Posts: 231
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Here is what you need:
http://store.summitracing.com/defaul...0244&x=13&y=11
Check out the speedo cable in this kit.... Orlando
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70 C-20 Custom Camper Build thread: http://67-72chevytrucks.com/vboard/s...d.php?t=300251 |
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#4 |
Registered User
Join Date: Jul 2003
Location: North Texas
Posts: 265
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Thanks for the link for the kit. That will be better than the $300 kit I was looking at.
I had been looking at '87 and newer trannies for their stronger internal parts. But I guess I could go pre '87 and get a mechanical drive tranny. It's not like I am going to be racing with my 2ton 300hp truck. ![]()
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'69 C/10 Short Wide 350/400/AC/Tilt/Tach |
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#5 |
Registered User
Join Date: Jan 2002
Location: Sahuarita, AZ USA
Posts: 2,033
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I don't remember what year the 700 in my Studebaker or my Longhorn are, but the cable was fine. They had to change the gear to get me right on MPH, but it's within 1 MPH now. As far as the age, that doesn't seem to matter. They put some 4L65 guts in mine when they built it, cause they know I pull my car trailer and water trailer with it.
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Bill - Tucson, AZ 47 Chevrolet 2 dr sedan 56 Chevrolet 210 2 dr sedan 66 Chevrolet Malibu 2 dr 4 speed 71 Chevrolet C30 Longhorn 86 Chevrolet Monte Carlo SS (Sold) 01 Chevrolet Tahoe IM - BUSTERWIVE@aol.com |
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#6 |
Progress = 0%
Join Date: Nov 2001
Location: Kansas City, MO
Posts: 2,108
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My 700R4 is newer than '87 and it has the mechanical speedo gear.
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Jason - '67 GMC swb | '57 Bel-Air 4dr hardtop | '56 210 4dr Wagon | 2000 GMC Sierra |
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#7 |
Insert funny comment.
![]() Join Date: Dec 1999
Location: Concord NC
Posts: 621
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I believe all 700r4's are cable driven and went electronic (VSS) when they switched to the 470le (or whatever its called) tranny in 1993 or so.
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------------ - Mark -My Build Thread... -68 C10, LT1 - Undergoing Frame off resto -86 IROC-Z T72 turbo 355, M6 -70 Camaro http://www.iroc-ss.com |
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#8 |
Registered User
Join Date: Feb 2002
Location: Tullahoma, TN
Posts: 203
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I put in a 700r4 out of a 92 s10 pickup that was not computer controlled but did have an electronic speedometer.
You can change the electonic speedometer sending unit to a mechanical cable type real easy. They will interchange without any modifications, all you have to do is: 1. Remove the rear tailshaft housing from the transmission. 2. Slide the "gear" off of the transmission tail shaft. I think it is held on by a clip or it is lightly pressed on, I don't remember 3. Remove the electionic speedometer parts from the tail shaft housing. 4. Install the mechanical speedometer parts (from an earlier transmission) into the tail shaft housing. 5. Install the right "gear set" for your rear end and tires. 6. Reinstall the rear tailshft housing. 7. Connect you speedometer cable. (on mine the cable was not long enough) Hope this helps. Litdave
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71 Factory SWB 4x4 Project 383/350/205 69 LWB 2wd CST Daily Driver ZZ4/700r4/3.73 72 SWB Future Hot Rod |
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#9 |
Registered User
Join Date: Jul 2003
Location: North Texas
Posts: 265
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Looks like I may be able to get a mechanical cable type if I keep looking.
Thanks everyone.
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'69 C/10 Short Wide 350/400/AC/Tilt/Tach |
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#10 |
Registered User
Join Date: Feb 2002
Location: Tullahoma, TN
Posts: 203
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I went to a transmission shop and they swapped with me even. My electionic speedomenter sending unit for a mechanical cable unit.
Litdave
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71 Factory SWB 4x4 Project 383/350/205 69 LWB 2wd CST Daily Driver ZZ4/700r4/3.73 72 SWB Future Hot Rod |
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#11 |
Registered User
Join Date: Aug 2002
Location: AZ
Posts: 17
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I was told you want a tranny newer than 87 due to the mods that were made after all the problems suffered earlyer. I bought a rebuilt tranny from Bowtie overdrives for around $900.00 already geared to my rearend and tire size. I think 92 was the last year that could run mechanical speedo. Mine works great, I highly reccomend the 700r.
Take care, Cole
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Unemployment would have been a wonderful experience, had it not been for the lack of money. |
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#12 |
Registered User
Join Date: Jan 2002
Location: Sahuarita, AZ USA
Posts: 2,033
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Cole, where you at in AZ? I love my 700R4. I'm getting ready to swap out the rear end for a newer on with 3:42ish gearing. Just picked up the donor rear. ThenI'll be able to do the freeway shuffle!
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Bill - Tucson, AZ 47 Chevrolet 2 dr sedan 56 Chevrolet 210 2 dr sedan 66 Chevrolet Malibu 2 dr 4 speed 71 Chevrolet C30 Longhorn 86 Chevrolet Monte Carlo SS (Sold) 01 Chevrolet Tahoe IM - BUSTERWIVE@aol.com |
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#13 |
Registered User
Join Date: Sep 2000
Location: Winnipeg, Manitoba Canada
Posts: 248
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I used a 700 from a 91 caprice. It had the electric spedo. I removed the electrical pick up and simply replaced it with one from a BOP turbo 350. If you need, I can get pics. Let me know. Extremelly cheap and simple.
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#14 |
And you call that a what?
Join Date: Oct 2002
Location: Dickson, TN
Posts: 171
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