speedo cable adapter? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jonzcustomshop · 11-19-2011, 05:55 PM

put a 79 trans am turbo 350 in my 63 chev truck.... what do I do to make the speedometer work? the 63 cable bolts up, but does not spin,or connect with the 79 transmission gear...

Rich 5150 69 · 11-19-2011, 07:53 PM

I`ve read that some models in the GM line up used a adapter...why I`m not sure, but this may be one case.

markeb01 · 11-19-2011, 08:21 PM

Years ago I had a Super T10 4 speed from a1982 Pontiac and it had a weird adapter mounted for the speedo cable. I ended up replacing the tail housing and eliminating the adapter. I don’t know if this was common to Pontiac automatics or was something unique to the factory 4 speed. Here are the only poor quality photos I have showing the adapter:

Rich 5150 69 · 11-19-2011, 08:37 PM

You may have to change out the speedo gears.

jonzcustomshop · 11-19-2011, 08:48 PM

my main problem is ,is that the cable is the same size, but the pontiac cable sticks into the gear about an inch farther than the chev.
the top of the pontiac cable clips on, wheras the chev screws on, so that won't work at the speedo head.

I was thinking maybe there is something that would go inbetween the stock 63 cable and the th350.

padresag · 11-19-2011, 09:18 PM

[QUOTE=markeb01;5019430]Years ago I had a Super T10 4 speed from a1982 Pontiac and it had a weird adapter mounted for the speedo cable. I ended up replacing the tail housing and eliminating the adapter. I don’t know if this was common to Pontiac automatics or was something unique to the factory 4 speed. Here are the only poor quality photos I have showing the adapter:
`

sure that wasn't just a ratio adaptor?
ron

padresag · 11-19-2011, 09:23 PM

Quote:

Originally Posted by jonzcustomshop

my main problem is ,is that the cable is the same size, but the pontiac cable sticks into the gear about an inch farther than the chev.
the top of the pontiac cable clips on, wheras the chev screws on, so that won't work at the speedo head.

I was thinking maybe there is something that would go inbetween the stock 63 cable and the th350.

just get that part from another 350 that will work with you cable.preferably from a chev 350 trans. the speedo gear itself should interchange
ron

jac70ss · 11-19-2011, 09:26 PM

Take a look at www.texasIndustrialelectric.com/speedo.asp. They may have something that will help. I'm dealing with a similar issue.
Posted via Mobile Device

Rich 5150 69 · 11-19-2011, 09:52 PM

And or here Jon
http://www.transmissioncenter.net/sp...____va.htm#350

11-19-2011, 05:55 PM	#1
jonzcustomshop 1961 crewcab Join Date: Dec 2007 Location: missoula, mt Posts: 6,164	speedo cable adapter? put a 79 trans am turbo 350 in my 63 chev truck.... what do I do to make the speedometer work? the 63 cable bolts up, but does not spin,or connect with the 79 transmission gear... __________________ 60 build: http://67-72chevytrucks.com/vboard/s...d.php?t=280904 61 crew build: http://67-72chevytrucks.com/vboard/s...d.php?t=646830 63 build: http://67-72chevytrucks.com/vboard/s...d.php?t=336537 64 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=448681 65 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=590715 65 build: http://67-72chevytrucks.com/vboard/s...d.php?t=281955

11-19-2011, 07:53 PM	#2
Rich 5150 69 Registered User Join Date: Nov 2009 Location: Galt, Calif Posts: 2,437	Re: speedo cable adapter? I`ve read that some models in the GM line up used a adapter...why I`m not sure, but this may be one case. __________________ `64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip

11-19-2011, 08:37 PM	#4
Rich 5150 69 Registered User Join Date: Nov 2009 Location: Galt, Calif Posts: 2,437	Re: speedo cable adapter? You may have to change out the speedo gears. __________________ `64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip

11-19-2011, 08:48 PM	#5
jonzcustomshop 1961 crewcab Join Date: Dec 2007 Location: missoula, mt Posts: 6,164	Re: speedo cable adapter? my main problem is ,is that the cable is the same size, but the pontiac cable sticks into the gear about an inch farther than the chev. the top of the pontiac cable clips on, wheras the chev screws on, so that won't work at the speedo head. I was thinking maybe there is something that would go inbetween the stock 63 cable and the th350. __________________ 60 build: http://67-72chevytrucks.com/vboard/s...d.php?t=280904 61 crew build: http://67-72chevytrucks.com/vboard/s...d.php?t=646830 63 build: http://67-72chevytrucks.com/vboard/s...d.php?t=336537 64 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=448681 65 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=590715 65 build: http://67-72chevytrucks.com/vboard/s...d.php?t=281955

11-19-2011, 09:18 PM	#6
padresag Registered User Join Date: Feb 2008 Location: Sidney,b.c. Posts: 4,425	Re: speedo cable adapter? [QUOTE=markeb01;5019430]Years ago I had a Super T10 4 speed from a1982 Pontiac and it had a weird adapter mounted for the speedo cable. I ended up replacing the tail housing and eliminating the adapter. I don’t know if this was common to Pontiac automatics or was something unique to the factory 4 speed. Here are the only poor quality photos I have showing the adapter: ` sure that wasn't just a ratio adaptor? ron

11-19-2011, 08:21 PM	#3
markeb01 Senior Enthusiast Join Date: Feb 2007 Location: Spokane Valley, WA Posts: 8,356	Re: speedo cable adapter? Years ago I had a Super T10 4 speed from a1982 Pontiac and it had a weird adapter mounted for the speedo cable. I ended up replacing the tail housing and eliminating the adapter. I don’t know if this was common to Pontiac automatics or was something unique to the factory 4 speed. Here are the only poor quality photos I have showing the adapter:

11-19-2011, 09:26 PM	#8
jac70ss Registered User Join Date: Jun 2009 Location: Murfreesboro TN Posts: 49	Re: speedo cable adapter? Take a look at www.texasIndustrialelectric.com/speedo.asp. They may have something that will help. I'm dealing with a similar issue. Posted via Mobile Device

11-19-2011, 09:52 PM	#9
Rich 5150 69 Registered User Join Date: Nov 2009 Location: Galt, Calif Posts: 2,437	Re: speedo cable adapter? And or here Jon http://www.transmissioncenter.net/sp...____va.htm#350 __________________ `64 C10 vortec 350/350/373 posi `69 RS/SS 350/350/308 `37 Ford 406/350/324 traclock `68 Dart 370/904/323 suregrip



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.