1967 Speedometer Cable with 4 spd

[Donald O.]

What is the correct length for the speedometer cable ass'y for a 1967 with a Muncie 4 spd?

Paragon says 70"
Rock Auto, AutoZone, Napa, Oreilly's, Advance Auto all say 83".

Is the speedometer cable ass'y still available from GM/Chevy (part no. 3939896)?

I'll be removing my original in a few days and I'd like to replace it at the same time.

Thanks,
Don

[Dick W.]

Re: 1967 Speedometer Cable with 4 spd

If the housing is still good, go to your local parts house and buy a cable kit. Cut to length, crimp end on and you are in business

[Donald O.]

Re: 1967 Speedometer Cable with 4 spd

Cable housing is roached by a previous owner

[Ray K.]

Re: 1967 Speedometer Cable with 4 spd

Don,
My '67 P & A book lists original cable length for '65 - '67 Corvette with 4 speed as being 67 1/8". Service assembly with cable and casing was part # 1588291 and casing is listed as 67 1/2". Paragon at 70" is much closer to original length.

Ray

[Joe L.]

Re: 1967 Speedometer Cable with 4 spd

What is the correct length for the speedometer cable ass'y for a 1967 with a Muncie 4 spd?

Paragon says 70"
Rock Auto, AutoZone, Napa, Oreilly's, Advance Auto all say 83".

Is the speedometer cable ass'y still available from GM/Chevy (part no. 3939896)?

I'll be removing my original in a few days and I'd like to replace it at the same time.

Thanks,
Don

Don------


I can find no record of GM #3939896. If it ever existed, it was not available in SERVICE.

With respect to speedometer cables, GM information is about as "imprecise" as anything could be. In addition, PRODUCTION part numbers are usually not SERVICE available so PRODUCTION information is of no help.

My advice to you: the guy that has this all speedometer cable stuff figured out is Doctor Rebuild. If you order from him, you will get the right cable and it will usually be a GM/Delco cable if one is available.

[Joe L.]

Re: 1967 Speedometer Cable with 4 spd

Don,
My '67 P & A book lists original cable length for '65 - '67 Corvette with 4 speed as being 67 1/8". Service assembly with cable and casing was part # 1588291 and casing is listed as 67 1/2". Paragon at 70" is much closer to original length.

Ray

Ray------


I have several editions of the 1938-67 Chevrolet P&A Catalogs. By my interpretation, none of them definitively indicates that the GM #1588291 cable assembly is applicable to 1967 Corvettes with 4 speed. More certain is that it applies to 1961-64 Corvettes with 4 speed. As far as 1965-67, it's less definitive. It simply indicates "ALL, CORVETTE" (btw, "ALL" in P&A terms means all models EXCEPT Corvette). However, there are several other part numbers and lengths listed for 1965-67 which also specify "ALL, CORVETTE". Nevertheless, I do think that the GM #1588291 is probably the correct part number for 1967 Corvette with 4 speed. I just don't see why the speedometer cables for 1965-67 Corvette with 4 speed would be any different in length than those for 1963-64 Corvettes (which, as I mentioned, are more definitively cataloged).

However, the GM #1588291 was discontinued from SERVICE in August, 1971 and replaced by GM #6478128. As far as I can determine, the latter is a 73" cable assembly. The 6478128 was later discontinued and replaced by GM #6480374 and that was discontinued and replaced by GM #25032275. I do not have definitive length information on either the 6480374 or the 25032275 but I think they are longer than either of their predecessors. GM #25032275 is discontinued; there may or may not be a current replacement available from GM/Delco.

[Ray K.]

Re: 1967 Speedometer Cable with 4 spd

Joe,

It finally dawned on me that in my garage parts inventory I have the original speedo cable that came in my '65 Corvette 4 speed. I was curious as to how it would measure versus the stated length in the P & A catalog - so it measured exactly as referenced in the catalog at 67 1/8" tip to tip. In an earlier edition '65 P & A regarding the #1588291 there is a special notation that states ( All, Corvette - use when 61" to 68" cable length is required ). As you are aware, in the P & A world of yesteryear - " All " means pass car and light truck. Corvette must be specifically stated. A couple of other part numbers had this notation also for the specific lengths they would cover, but this notation does not appear in the '67 publication. The #1588291 also carried an AC number of CC-75. I did not run the updating part numbers on the cable assembly as you did.

1963 - 64 Corvette 4 speeds appear to have a shorter speedo cable, the book says 56 1/8". I believe this is probably correct due to the speedo driven gear being located on the left side of the trans extension housing versus the right side for '65 and later which required a slightly longer cable assembly.

Ray

[Donald O.]

Re: 1967 Speedometer Cable with 4 spd

Don------


I can find no record of GM #3939896. If it ever existed, it was not available in SERVICE.

Joe,
That number came directly from the 1967 AIM. While not maybe a service number it was surely a production number.
Don

[Joe L.]

Re: 1967 Speedometer Cable with 4 spd

Joe,
That number came directly from the 1967 AIM. While not maybe a service number it was surely a production number.
Don

Don------

The part number in the AIM is 3839896. The part number 3939896 would not have existed as a released part as early as 1967.

However, GM #3839896 was also a PRODUCTION-only part number, never available in SERVICE.

[Donald O.]

Re: 1967 Speedometer Cable with 4 spd

Don------

The part number in the AIM is 3839896. The part number 3939896 would not have existed as a released part as early as 1967.

However, GM #3839896 was also a PRODUCTION-only part number, never available in SERVICE.

Yep.
I made another typo. Sorry 'bout that.

Don

[Wayne L.]

Re: 1967 Speedometer Cable with 4 spd

There was a change made in the tailhousing casting which moved the speedometer driven gear/housing to the passenger side of the transmission, from the driver side that was the case in 1963 thru early 1965. This change was made sometime in the middle of 1965 production. So , there may have been two different lengths for C2 speedometer cables.

[Darryl D.]

Re: 1967 Speedometer Cable with 4 spd

Are we talking about the cable housing or just the cable?

If it is just the cable then my thoughts are that if the original was 67 1/8" and the shortest replacement available is 70" you are going to have nearly 3" sticking out of the housing and I would think this would cause binding.

[Joe L.]

Re: 1967 Speedometer Cable with 4 spd

Are we talking about the cable housing or just the cable?

If it is just the cable then my thoughts are that if the original was 67 1/8" and the shortest replacement available is 70" you are going to have nearly 3" sticking out of the housing and I would think this would cause binding.

Darryl------


We're talking about the complete assembly, cable + housing.

[Darryl D.]

Re: 1967 Speedometer Cable with 4 spd

Darryl------


We're talking about the complete assembly, cable + housing.

OK, thank you.

[Donald O.]

Re: 1967 Speedometer Cable with 4 spd

I just measured the new replacement from one of my favorite vendors, Paragon in Swartz Creek, MI. It measured from tip to tip 71.125". This is way better than the FLAPS 83" lengths.

Don