John S Posted August 9, 2021 Posted August 9, 2021 Does anyone have an idea what the length of a speedometer cable for a 70 Monte Carlo with a four-speed is? The one that is presently on the car is not correct and is considerably longer than I believe it should be. If anyone has an idea I’d appreciate it. I didn’t look at the parts place to see if they have lengths listed. I got one years ago from in line tube and this one as well over 70 inches long that can’t be right. John S Quote
1970mcss Posted August 9, 2021 Posted August 9, 2021 6 minutes ago, 1970mcss said: This page shows 64" for all 70's Quote
1970mcss Posted August 9, 2021 Posted August 9, 2021 9 minutes ago, 1970mcss said: This page shows 64" for all 70's They also show a chart for a Chevelle that shows 70" with speed control and cruise control but I can't get that chart copied to this post Quote
Leghome Posted August 9, 2021 Posted August 9, 2021 All of the replacement speedo cables I have ever gotten came long and I had to cut them off and crimp on the other end but that has been years ago and do not know the latest and greatest Quote
John S Posted August 13, 2021 Author Posted August 13, 2021 If the speedometer cable is routed the way the assembly manual states 60 inch cable is too short. The 60 inch cable looks as if it would work on the transmission with the speedo connection on the driver side. A 69 or 70 inch cable seems to fit correctly as shown in the assembly manual. Also I have a four-speed manual. John S Quote
Dtret Posted August 14, 2021 Posted August 14, 2021 With the 4 speed being an option, wouldn’t that be in the option section of the manual? Quote
John S Posted August 14, 2021 Author Posted August 14, 2021 It doesn’t state the length of the speedometer cable only the part number. I’ve got it figured out they make a number of different lengths you got to use your head and figure it out. John S Quote
John S Posted August 17, 2021 Author Posted August 17, 2021 When you replace the speedometer cable with the new one should you pull the cable out and lightly lubricate it or leave it as it is? I was going to lightly lubricate it with white lithium grease. It is been about 40 years since I replaced one let me know what you guys do with them. John S Quote
cny first gen 71 Posted August 17, 2021 Posted August 17, 2021 It can't hurt to have some greese on it, that's what you do when a cable makes noise. Quote
1970mcss Posted August 17, 2021 Posted August 17, 2021 When I worked at a dealership years ago we always lubed the cables. We replaced a lot of inner cables back in the day Quote
John S Posted August 17, 2021 Author Posted August 17, 2021 Thanks for the help it’s been many years since I’ve worked with speedometer cables. John S Quote
Scott S. Posted August 17, 2021 Posted August 17, 2021 A little lube solves all sorts of issues.... Quote
71MonteCarloMD Posted August 17, 2021 Posted August 17, 2021 Curious if grease will help with needle on console from jumping back and forth under 40 mph? Quote
Rob Peters Posted August 17, 2021 Posted August 17, 2021 It is very possible it will correct that problem. It does depend upon how much crud has gathered on the cable and inside the cable housing. You may need to clean both of them out first. rob Quote
71MonteCarloMD Posted August 17, 2021 Posted August 17, 2021 Thanks Rob, the cable is newly installed by a shop last fall. What kind of grease and how much to use? Quote
Rob Peters Posted August 18, 2021 Posted August 18, 2021 I think most people recommend lithium grease but I am sure others will chime in with what they use. It is possible the one that was installed may not have been greased from the manufacturer. rob Quote
John S Posted August 18, 2021 Author Posted August 18, 2021 1 hour ago, 71MonteCarloMD said: Curious if grease will help with needle on console from jumping back and forth under 40 mph? Pull the speedometer cable out and spin The cable at the transmission end by hand or slowly in a variable speed drill. See if the end of the cable that goes into the speedometer if it rotates true or if it wobbles. Mine wobbled after tweaking the cable a little bit it started to spin true and when I installed it no more speedometer bouncing. John S Quote
Delmonte72 Posted September 22, 2021 Posted September 22, 2021 On 8/17/2021 at 9:13 PM, John S said: Pull the speedometer cable out and spin The cable at the transmission end by hand or slowly in a variable speed drill. See if the end of the cable that goes into the speedometer if it rotates true or if it wobbles. Mine wobbled after tweaking the cable a little bit it started to spin true and when I installed it no more speedometer bouncing. John S Anti-clockwise with the drill, so I read Quote
TheBMan Posted March 27, 2023 Posted March 27, 2023 Did anyone ever come up with a definitive resolution to this? I need to replace the speedo cable on my 70 SB350/Turbo 350 and I see conflicting information. According to @1970mcss, the cable should be 64" but I can't find a cable that length anywhere. Even the OPGI cable is 78". If I use a longer cable, where does the extra length become a problem? Any tricks or install tips? Quote
Scott S. Posted March 27, 2023 Posted March 27, 2023 Bman, Try Ausley's Chevelle parts. I see they stock a 64" cable. Quote
TheBMan Posted March 28, 2023 Posted March 28, 2023 20 hours ago, Scott S. said: Bman, Try Ausley's Chevelle parts. I see they stock a 64" cable. Thanks @Scott S. Scott! 1 Quote
420ponies Posted March 28, 2023 Posted March 28, 2023 (edited) I believe that The Parts Place has the correct cable also. Worth a call to them. Edited March 28, 2023 by 420ponies Spellcheck 1 Quote
Scott S. Posted March 28, 2023 Posted March 28, 2023 4 hours ago, TheBMan said: Thanks @Scott S. Scott! Chevelle parts seem to be more readily available..... Despite the fact most interchange. Ever get the feeling of being that red headed step child ??? LOL Quote
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