Accelerator cable adjustment..... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ellisjay2 · 09-16-2021, 02:09 PM

With my new setup Holley 4150, installed Holley accelerator bracket, reconnected cable but noticed floor pedal has slack avoiding wide open throttle. There's nowhere to adjust at the bracket, so I'm thinking somehow adjust at the foot pedal possibly??? It seems the pedal needs to be up more at its resting position before even pressing down...???.?

**Palf70Step** · 09-16-2021, 03:06 PM

Far as I know there is no adjustment. I changed to a new cable bracket that was adjustable. Yours does not look factory from what I can see, so not sure how you could do yours. I had an Edelbrock on one truck and used the factory Tranny and throttle cable bracket. The one for the holley, I had something lying around that was adjustable, but don't remember brand. Don't have that particular truck any more.

NOTE: Holley recommends there part #20-88 for your linkage.

Ziegelsteinfaust · 09-16-2021, 05:50 PM

On my step. The factory cable had some slack to accommodate various situations.

With my new bracket I set it to no slack as I prefer. But it is a bit annoying, but not hard.

ellisjay2 · 09-17-2021, 05:10 PM

So how could I get the slack out if it's gonna stop wide open throttle??? I have to use the bracket I got from Holley in order for it to work.....or do i need to modify something....????

ellisjay2 · 09-17-2021, 05:27 PM

Quote:

Originally Posted by Palf70Step

Far as I know there is no adjustment. I changed to a new cable bracket that was adjustable. Yours does not look factory from what I can see, so not sure how you could do yours. I had an Edelbrock on one truck and used the factory Tranny and throttle cable bracket. The one for the holley, I had something lying around that was adjustable, but don't remember brand. Don't have that particular truck any more.

NOTE: Holley recommends there part #20-88 for your linkage.

20-88 is the bracket I went and got.....

geezer#99 · 09-17-2021, 05:33 PM

Didn’t I give you a link to a bracket like this in your other thread.
No problem with it being easy to adjust.

https://www.summitracing.com/parts/s...9blk?rrec=true

geezer#99 · 09-17-2021, 05:48 PM

So I just had a closer look at your pic.
Why is the chrome bracket sitting so high?
Where do you have it mounted?

v30crewcab · 09-17-2021, 09:31 PM

I have taken the pedal out before, and put it in the vice and slightly bent it til it opens full throttle.

ellisjay2 · 09-20-2021, 04:11 PM

That's where it mounts...last stud on corner of carb stud....

Pontiac1976 · 09-23-2021, 11:30 PM

make sure your chrome bracket is not moving on the base bolt. if the springs a little loose change out the springs move to the front of the carb top front side on the linkage and play with the tension of the springs or spring get peddle feel you like. The bolt hole at the front on the intake make or buy bracket for the spring to mount to

**dagnabbitt** · 09-24-2021, 08:49 AM

Holley bracketry has a lot to do with what transmission you are using, and as you note they do not affix to the intake like Edelbrock, but on the rear "ear" of the carb.

I am not an expert but I just went through this a month ago with my very first Holley, so I will just share what I bought for mine that seems to work: for my 600 cfm with a 700r4, below. I am not saying these are the parts you need. I will say that my attempt to cheap out and make my own throttle stud ended in failure and I ended up buying the Holley part... it has to be the most money I have paid per ounce for a bolt in my life. But, it worked, and with the correct parts there was no slop or slack anywhere and it works like a charm. Unless someone has swapped your original throttle cable with another at some point I think you just have to find the correct part for your application.

https://www.amazon.ca/Holley-20-95-T...111472&sr=8-10

https://www.amazon.ca/Holley-20-121-...00CMDVA2&psc=1

https://www.amazon.ca/Holley-20-38-T...0029JE38&psc=1

09-16-2021, 02:09 PM	#1
ellisjay2 Registered User Join Date: Feb 2014 Location: marietta ga Posts: 147	Accelerator cable adjustment..... With my new setup Holley 4150, installed Holley accelerator bracket, reconnected cable but noticed floor pedal has slack avoiding wide open throttle. There's nowhere to adjust at the bracket, so I'm thinking somehow adjust at the foot pedal possibly??? It seems the pedal needs to be up more at its resting position before even pressing down...???.? Attached Images __________________ : Eli540 86 gmc 2500 longbed Carb 5.7, rwd, 400 tranny.

09-16-2021, 05:50 PM	#3
Ziegelsteinfaust Registered User Join Date: Dec 2012 Location: Temple City Posts: 3,628	Re: Accelerator cable adjustment..... On my step. The factory cable had some slack to accommodate various situations. With my new bracket I set it to no slack as I prefer. But it is a bit annoying, but not hard.

09-17-2021, 05:10 PM	#4
ellisjay2 Registered User Join Date: Feb 2014 Location: marietta ga Posts: 147	Re: Accelerator cable adjustment..... So how could I get the slack out if it's gonna stop wide open throttle??? I have to use the bracket I got from Holley in order for it to work.....or do i need to modify something....???? __________________ : Eli540 86 gmc 2500 longbed Carb 5.7, rwd, 400 tranny.

09-17-2021, 05:33 PM	#6
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,732	Re: Accelerator cable adjustment..... Didn’t I give you a link to a bracket like this in your other thread. No problem with it being easy to adjust. https://www.summitracing.com/parts/s...9blk?rrec=true

09-17-2021, 05:48 PM	#7
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,732	Re: Accelerator cable adjustment..... So I just had a closer look at your pic. Why is the chrome bracket sitting so high? Where do you have it mounted?

09-16-2021, 03:06 PM	#2
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,221	Re: Accelerator cable adjustment..... Far as I know there is no adjustment. I changed to a new cable bracket that was adjustable. Yours does not look factory from what I can see, so not sure how you could do yours. I had an Edelbrock on one truck and used the factory Tranny and throttle cable bracket. The one for the holley, I had something lying around that was adjustable, but don't remember brand. Don't have that particular truck any more. NOTE: Holley recommends there part #20-88 for your linkage. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! Last edited by Palf70Step; 09-16-2021 at 03:12 PM.

09-17-2021, 09:31 PM	#8
v30crewcab Registered User Join Date: Apr 2012 Location: Chatt Tn Posts: 982	Re: Accelerator cable adjustment..... I have taken the pedal out before, and put it in the vice and slightly bent it til it opens full throttle. __________________ 88 military v30 crewcab shortbed 5.9 cummins, nv4500, 205 86 k30, 89 diesel burb, 76 gmc pathfinder 71 longbed 5.3 4l80 http://67-72chevytrucks.com/vboard/s...d.php?t=522535

09-20-2021, 04:11 PM	#9
ellisjay2 Registered User Join Date: Feb 2014 Location: marietta ga Posts: 147	Re: Accelerator cable adjustment..... That's where it mounts...last stud on corner of carb stud.... Attached Images __________________ : Eli540 86 gmc 2500 longbed Carb 5.7, rwd, 400 tranny.

09-23-2021, 11:30 PM	#10
Pontiac1976 Registered User Join Date: Oct 2015 Location: Ottawa, Ontario, Canada Posts: 766	Re: Accelerator cable adjustment..... make sure your chrome bracket is not moving on the base bolt. if the springs a little loose change out the springs move to the front of the carb top front side on the linkage and play with the tension of the springs or spring get peddle feel you like. The bolt hole at the front on the intake make or buy bracket for the spring to mount to __________________ 1977 REG cab Long Bed with a 1984 Front Clip, 82 305 .60 over 9.0.1 flat top pistons, 4bbl, TH350, w/84 SS-intake & cam , w/ 1977 big block rad, 1975 gear box, 1984 master w/ metric fittings top & SAE fitting @ portion block, 1975 3.42 gear open diff. Duel 77-87 Factory air cleaner, duel inlet from rad support . Down sized 9' to new 8' Steel flat bed Was a 77 454 w/308 gear. Taken out 550 lbs. up front with motor clip change.

09-24-2021, 08:49 AM	#11
dagnabbitt Senior Member Join Date: Dec 2014 Location: Edmonton Alberta Posts: 1,457	Re: Accelerator cable adjustment..... Holley bracketry has a lot to do with what transmission you are using, and as you note they do not affix to the intake like Edelbrock, but on the rear "ear" of the carb. I am not an expert but I just went through this a month ago with my very first Holley, so I will just share what I bought for mine that seems to work: for my 600 cfm with a 700r4, below. I am not saying these are the parts you need. I will say that my attempt to cheap out and make my own throttle stud ended in failure and I ended up buying the Holley part... it has to be the most money I have paid per ounce for a bolt in my life. But, it worked, and with the correct parts there was no slop or slack anywhere and it works like a charm. Unless someone has swapped your original throttle cable with another at some point I think you just have to find the correct part for your application. https://www.amazon.ca/Holley-20-95-T...111472&sr=8-10 https://www.amazon.ca/Holley-20-121-...00CMDVA2&psc=1 https://www.amazon.ca/Holley-20-38-T...0029JE38&psc=1 __________________ DAVE Edmonton, Alberta 1959 Apache 1967 K20 1968 C20 1970 C10 1972 GMC 2500 1981 C10 Last edited by dagnabbitt; 09-24-2021 at 09:25 AM.



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