Help With Carb Linkage 70-GMC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rwilhi · 11-14-2008, 11:27 PM

I am hoping that one of you out there have experienced this issue and can help me find a solution.

I just completed a V8 Conversion from a V6 on my 70 GMC Short Box.. I am having an issue converting the throttle lever or finding a kit of some sort. Any Ideas?

Thanks ALL

chevydog66 · 11-15-2008, 01:35 AM

Does www.lmctruck.com show any pics of the v6 and v8 stuff? My 72 GMC has a throttle cable in black plastic housing. What type of throttle linkage was on the v6? Maybe update it to the newer style throttle cable.

**El Jay** · 11-15-2008, 07:03 AM

If it's a rod linkage, maybe this will help.

On my truck, the PO just cut a chunk out of the middle of the linkage rod & then welded it back together.
It's been working fine for ages.

Probably a 10 minute job, if that.

chevydog66 · 11-15-2008, 03:55 PM

Or try some threaded rod. My 66 Chevelle had a fine thread 1/4" rod. It's not 1/4-20 because that is course thread. So, it might be 1/4-24 or 1/4-28 whatever the fine thread may be.

rwilhi · 11-16-2008, 02:20 AM

Thanks for all of your suggestions..

71tahoe · 11-16-2008, 11:32 AM

It depends on what carb you have. I have an edelbrock with the 1/2" hole at the top of the linkage. Jegs carries the adapter. http://www.jegs.com/i/Mr.+Gasket/720/1512/10002/-1

I got the HELP brand cable stop assortment, picked the largest one and drilled out the hole for the cable to the diameter of the original rod. I think I ran a tap the rest of the way through. Then stacked washers to fit through the half inch hole.

Longhorn Man · 11-16-2008, 12:56 PM

do you have a photo of the actual problem?

chevydog66 · 11-16-2008, 11:30 PM

I just noticed today that these people have a throttle linkage for 6cyl. or v8's.
http://www.classicparts.com/Engine-P...ducts/311/13/0

And I still have my old throttle rod that was used on my old v8 with the Qjet carb. I switched over to a Holley.

11-14-2008, 11:27 PM	#1
rwilhi Registered User Join Date: Jan 2008 Location: Bay Area, California Posts: 67	Help With Carb Linkage 70-GMC I am hoping that one of you out there have experienced this issue and can help me find a solution. I just completed a V8 Conversion from a V6 on my 70 GMC Short Box.. I am having an issue converting the throttle lever or finding a kit of some sort. Any Ideas? Thanks ALL __________________ 1970 GMC 1500 Super Custom 1970 Olds 442 Convertible 1968 GMC 1500 Super Custom 2007 Honda ST1300

11-15-2008, 01:35 AM	#2
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: Help With Carb Linkage 70-GMC Does www.lmctruck.com show any pics of the v6 and v8 stuff? My 72 GMC has a throttle cable in black plastic housing. What type of throttle linkage was on the v6? Maybe update it to the newer style throttle cable. __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

11-15-2008, 07:03 AM	#3
El Jay Gone to greener pastures Join Date: May 2007 Location: Gateway to the Delta Posts: 7,354	Re: Help With Carb Linkage 70-GMC If it's a rod linkage, maybe this will help. On my truck, the PO just cut a chunk out of the middle of the linkage rod & then welded it back together. It's been working fine for ages. Probably a 10 minute job, if that. __________________ '69 Chevy 1/2 T LWB Stepper: Daily Beater '72 GMC 3/4 T Fleet: Another Daily Beater '72 Plymouth Gran Coupe: ? "Ah women. They make the highs higher and the lows more frequent." Friedrich Nietzsche "Never kick a fresh turd on a hot day." Harry S. Truman GUN CONTROL: Never having to say, "I missed you." Always fire two warning shots into your attacker's chest area before putting a bullet between his eyes. Paraphrased from Louis Awerbuck

11-15-2008, 03:55 PM	#4
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: Help With Carb Linkage 70-GMC Or try some threaded rod. My 66 Chevelle had a fine thread 1/4" rod. It's not 1/4-20 because that is course thread. So, it might be 1/4-24 or 1/4-28 whatever the fine thread may be. __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up

11-16-2008, 02:20 AM	#5
rwilhi Registered User Join Date: Jan 2008 Location: Bay Area, California Posts: 67	Re: Help With Carb Linkage 70-GMC Thanks for all of your suggestions.. __________________ 1970 GMC 1500 Super Custom 1970 Olds 442 Convertible 1968 GMC 1500 Super Custom 2007 Honda ST1300

11-16-2008, 11:32 AM	#6
71tahoe Registered User Join Date: May 2006 Location: Jonesboro, AR Posts: 916	Re: Help With Carb Linkage 70-GMC It depends on what carb you have. I have an edelbrock with the 1/2" hole at the top of the linkage. Jegs carries the adapter. http://www.jegs.com/i/Mr.+Gasket/720/1512/10002/-1 I got the HELP brand cable stop assortment, picked the largest one and drilled out the hole for the cable to the diameter of the original rod. I think I ran a tap the rest of the way through. Then stacked washers to fit through the half inch hole.

11-16-2008, 12:56 PM	#7
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Help With Carb Linkage 70-GMC do you have a photo of the actual problem?

11-16-2008, 11:30 PM	#8
chevydog66 GM ONLY BABY!!! Join Date: Oct 2003 Location: Fort Wayne, IN. Posts: 1,998	Re: Help With Carb Linkage 70-GMC I just noticed today that these people have a throttle linkage for 6cyl. or v8's. http://www.classicparts.com/Engine-P...ducts/311/13/0 And I still have my old throttle rod that was used on my old v8 with the Qjet carb. I switched over to a Holley. __________________ 2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up Last edited by chevydog66; 11-16-2008 at 11:31 PM.

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