Replace throttle cable?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RustyBucket · 11-26-2024, 06:43 PM

How do I get the throttle cable grommet out of the firewall on my '71 GMC?? I can't find video or good picture that shows how to release it. Not an easy place for an old fat guy to work on. It whipped me pretty bad this afternoon. Old cable is too long & kinked. Thanks in Advance!

**pjmoreland** · 11-26-2024, 07:27 PM

There are two barbed tabs that have to be squeezed inward simultaneously while pushing the cable out of the hole. You can't do one and then the other because the cable will tilt in the hole and get jammed.

RustyBucket · 11-26-2024, 09:16 PM

THANKS!!!! A picture is worth a lotta words... & videos TOO. The pedal side is recessed so that I couldn't see the tabs. I've used hose pliers on my TV cable tabs. HAPPY THANKSGIVING!!!!!

Kalums · 11-26-2024, 11:11 PM

Quote:

Originally Posted by RustyBucket

How do I get the throttle cable grommet out of the firewall on my '71 GMC?? I can't find video or good picture that shows how to release it. Not an easy place for an old fat guy to work on. It whipped me pretty bad this afternoon. Old cable is too long & kinked. Thanks in Advance!

I've got a 71 GMC K2500 what/who's cable did you go with and do you know of a gas pedal return spring (the spring that makes the pedal stand back up) replacement? Also I'm glad you were able to get yours figured out *thumbs up*

**Fbks_Cruiser** · 11-27-2024, 12:25 AM

I got my new cable for my 72 k2500 from the truck and car shop
http://www.truckandcarshop.com/6072.html
Be sure to get one for 4wd, they are different length. Not sure if 71 is different but on my 72 the throttle return springs at the carb pull the cable and put the pedal back into position

Kalums · 11-27-2024, 12:30 AM

Quote:

Originally Posted by Fbks_Cruiser

I got my new cable for my 72 k2500 from the truck and car shop
http://www.truckandcarshop.com/6072.html
Be sure to get one for 4wd, they are different length. Not sure if 71 is different but on my 72 the throttle return springs at the carb pull the cable and put the pedal back into position

Thanks for the link and info on the cable. I've got the throttle return spring on my carb also... But my skinny pedal has a little coiled "V" shaped spring under it between the mounting plate and the pedal itself. *shrugs* it is really weak and I have been trying to figure out if it is replaceable or even needs to be replaced... Not much info around on it.

**Classic Bowties** · 11-27-2024, 11:18 AM

Quote:

Originally Posted by Kalums

I've got the throttle return spring on my carb also... But my skinny pedal has a little coiled "V" shaped spring under it between the mounting plate and the pedal itself. *shrugs* it is really weak and I have been trying to figure out if it is replaceable or even needs to be replaced... Not much info around on it.

Kalums, we have these pictured GM NOS 1971-72 accelerator pedal pins and tension springs available in the below linked parts board f/s thread and also while on the same subject, here are a few more pics from our old saved folder archives showing the OE 71-72 style throttle cable to 4 BBL carburetor mounting bracket and return spring setup at the carb. Have a look and let us know, Mel

http://67-72chevytrucks.com/vboard/s...d.php?t=783148

.

Kalums · 11-27-2024, 11:33 AM

Quote:

Originally Posted by Classic Bowties

Kalums, we have these pictured GM NOS 1971-72 accelerator pedal pins and tension springs available in the below linked parts board f/s thread and also while on the same subject, here are a few more pics from our old saved folder archives showing the OE 71-72 style throttle cable to 4 BBL carburetor mounting bracket and return spring setup at the carb. Have a look and let us know, Mel

http://67-72chevytrucks.com/vboard/s...d.php?t=783148

.

You rock! Sending PM

RustyBucket · 11-28-2024, 04:07 AM

I removed the broken cable guide from the firewall(THANKS AGAIN pjmoreland).
All good info on replacing throttle cable on an original truck but mine has an alum intake and a small vac. secondary Holley carb. It's only about 10' from the firewall to the bracket on the carb. My cable housing is broken off at the firewall connection. The cable(braided wire) is fine but I wish I could find a a replacement cable housing or sheath approx the correct length. The pedal end of my cable has an adjustable stop nut. My cable housing broke because it was way too long and was in a bind.

**1970cstblazer** · 11-28-2024, 08:18 AM

My advice is to buy the proper 2WD small block cable(or which ever powerplant you are using), and engineer it for smooth full range of throttle motion. Since you have a non stock carb and intake, some thoughtful mods will be needed to achieve this. This is not a place for hack jobs and faulty parts.

RustyBucket · 11-28-2024, 12:44 PM

Quote:

Originally Posted by 1970cstblazer

My advice is to buy the proper 2WD small block cable(or which ever powerplant you are using), and engineer it for smooth full range of throttle motion. Since you have a non stock carb and intake, some thoughtful mods will be needed to achieve this. This is not a place for hack jobs and faulty parts.

Great advice, HAPPY THANKSGIVING!

**1970cstblazer** · 11-28-2024, 01:26 PM

Thank you. Happy Thanksgiving!

11-26-2024, 06:43 PM	#1
RustyBucket Registered User Join Date: Jul 2009 Location: Space Coast, Fl. Posts: 1,055	Replace throttle cable?? How do I get the throttle cable grommet out of the firewall on my '71 GMC?? I can't find video or good picture that shows how to release it. Not an easy place for an old fat guy to work on. It whipped me pretty bad this afternoon. Old cable is too long & kinked. Thanks in Advance! Attached Images __________________ Dad always said, "Son, WISH IN ONE HAND, and ......." -------------------------------------- -------------------------------------- Current toy trucks: '71 GMC 1500 SUPER CUSTOM short/step, orig. dk. blue, 350/700r, ps,pb, A/C '72 Blazer 2wd, ochre & white, 454, tremecTKO 500 5spd. ps, pb, A/C, tilt Last 10yrs of hobby vehicles, had a FEW more in the 50yrs. before these: '66 Plymouth Belvedere City of Miami cop car clone. '70 Nova 406"sb, 13.5-1, solid roller, Brodix, p.glide/t.brake, back halved, 9" Ford, spool 4.88, cage,ladder bar/coilover, 10.5 tire....... SOLD!! '67 C10 short/step side mount spare -- SOLD!! '72 Jimmy 2wd, 350/350, ps, pb, fun driver, lots of bondo & a shiny red paint job..... SOLD!! '69 Nova 350, 4spd, A/C, ps, p.b, ...SOLD!!

11-26-2024, 07:27 PM	#2
pjmoreland Senior Member Join Date: Jan 2005 Location: CA Posts: 5,974	Re: Replace throttle cable?? There are two barbed tabs that have to be squeezed inward simultaneously while pushing the cable out of the hole. You can't do one and then the other because the cable will tilt in the hole and get jammed. Attached Images

11-26-2024, 09:16 PM	#3
RustyBucket Registered User Join Date: Jul 2009 Location: Space Coast, Fl. Posts: 1,055	Re: Replace throttle cable?? THANKS!!!! A picture is worth a lotta words... & videos TOO. The pedal side is recessed so that I couldn't see the tabs. I've used hose pliers on my TV cable tabs. HAPPY THANKSGIVING!!!!! __________________ Dad always said, "Son, WISH IN ONE HAND, and ......." -------------------------------------- -------------------------------------- Current toy trucks: '71 GMC 1500 SUPER CUSTOM short/step, orig. dk. blue, 350/700r, ps,pb, A/C '72 Blazer 2wd, ochre & white, 454, tremecTKO 500 5spd. ps, pb, A/C, tilt Last 10yrs of hobby vehicles, had a FEW more in the 50yrs. before these: '66 Plymouth Belvedere City of Miami cop car clone. '70 Nova 406"sb, 13.5-1, solid roller, Brodix, p.glide/t.brake, back halved, 9" Ford, spool 4.88, cage,ladder bar/coilover, 10.5 tire....... SOLD!! '67 C10 short/step side mount spare -- SOLD!! '72 Jimmy 2wd, 350/350, ps, pb, fun driver, lots of bondo & a shiny red paint job..... SOLD!! '69 Nova 350, 4spd, A/C, ps, p.b, ...SOLD!!

11-27-2024, 12:25 AM	#5
Fbks_Cruiser Senior Member Join Date: Apr 2016 Location: Fairbanks, AK Posts: 343	Re: Replace throttle cable?? I got my new cable for my 72 k2500 from the truck and car shop http://www.truckandcarshop.com/6072.html Be sure to get one for 4wd, they are different length. Not sure if 71 is different but on my 72 the throttle return springs at the carb pull the cable and put the pedal back into position __________________ 1972 GMC K2500 Super Custom Matt

11-28-2024, 04:07 AM	#9
RustyBucket Registered User Join Date: Jul 2009 Location: Space Coast, Fl. Posts: 1,055	Re: Replace throttle cable?? I removed the broken cable guide from the firewall(THANKS AGAIN pjmoreland). All good info on replacing throttle cable on an original truck but mine has an alum intake and a small vac. secondary Holley carb. It's only about 10' from the firewall to the bracket on the carb. My cable housing is broken off at the firewall connection. The cable(braided wire) is fine but I wish I could find a a replacement cable housing or sheath approx the correct length. The pedal end of my cable has an adjustable stop nut. My cable housing broke because it was way too long and was in a bind. Attached Images __________________ Dad always said, "Son, WISH IN ONE HAND, and ......." -------------------------------------- -------------------------------------- Current toy trucks: '71 GMC 1500 SUPER CUSTOM short/step, orig. dk. blue, 350/700r, ps,pb, A/C '72 Blazer 2wd, ochre & white, 454, tremecTKO 500 5spd. ps, pb, A/C, tilt Last 10yrs of hobby vehicles, had a FEW more in the 50yrs. before these: '66 Plymouth Belvedere City of Miami cop car clone. '70 Nova 406"sb, 13.5-1, solid roller, Brodix, p.glide/t.brake, back halved, 9" Ford, spool 4.88, cage,ladder bar/coilover, 10.5 tire....... SOLD!! '67 C10 short/step side mount spare -- SOLD!! '72 Jimmy 2wd, 350/350, ps, pb, fun driver, lots of bondo & a shiny red paint job..... SOLD!! '69 Nova 350, 4spd, A/C, ps, p.b, ...SOLD!!

11-28-2024, 08:18 AM	#10
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,822	Re: Replace throttle cable?? My advice is to buy the proper 2WD small block cable(or which ever powerplant you are using), and engineer it for smooth full range of throttle motion. Since you have a non stock carb and intake, some thoughtful mods will be needed to achieve this. This is not a place for hack jobs and faulty parts. __________________ 1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels

11-28-2024, 01:26 PM	#12
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,822	Re: Replace throttle cable?? Thank you. Happy Thanksgiving! __________________ 1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels



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