The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board > 67-72 Chevrolet & GMC Pickups Projects and Builds

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-12-2013, 08:57 PM   #1
Lugnutt
Registered User
 
Lugnutt's Avatar
 
Join Date: Jan 2007
Location: San Jose, California
Posts: 194
Too much sound deadening under brake & throttle

I installed the recommended 3 layers of sound deadening plus carpet on my truck floor and I noticed that my brake pedal is pretty close to the carpet when braking and I only have half throttle when I mash my foot down on the peddle. Have any of you boys experienced this problem? I'm wondering whether there is a way to adjust or bend brake or throttle linkage to raise them up a bit so they have more floor clearance or if I need to dig out some of insulation.

Sure would appreciate some advice on this.

Thanks
Lugnutt is offline   Reply With Quote
Old 06-12-2013, 10:16 PM   #2
Xeen
Registered User
 
Xeen's Avatar
 
Join Date: Aug 2012
Location: Topeka Kansas
Posts: 2,655
Re: Too much sound deadening under brake & throttle

If it were me I would take up the carpet and take an exacto knife and cut out two of the layers under the pedals and problem solved.
__________________
Please call me Brian.
Check out My 1972 SWB Fleetside 5.3L Vortec Restomod Build
Xeen is offline   Reply With Quote
Old 06-14-2013, 05:15 PM   #3
Lugnutt
Registered User
 
Lugnutt's Avatar
 
Join Date: Jan 2007
Location: San Jose, California
Posts: 194
Re: Too much sound deadening under brake & throttle

Thanks for your response but I was kinda hoping that I wouldn't have to cut out the sound deadening right there with the headers right on the other side of the firewall. I was wondering if anyone had ever modified their brake linkage or their throttle linkage to raise them a small distance; it wouldn't take much.

Thanks again
Lugnutt is offline   Reply With Quote
Old 06-14-2013, 05:50 PM   #4
Xeen
Registered User
 
Xeen's Avatar
 
Join Date: Aug 2012
Location: Topeka Kansas
Posts: 2,655
Re: Too much sound deadening under brake & throttle

OK well if this is a 71-72 all you have to do is install the Rod support (the triangle shaped plastic piece) on top of the carpet and it will work like it's supposed to.
If it is a 67-70 you can change it over to the 71-72 version and it will work fine, but this will require some work you will have to drill out the 3 square nuts that are welded to the inside of the firewall and weld up all the holes even the ones above it, then redrill the holes for the new style and tack weld square nuts to the engine side of the firewall, then drill a new hole and use a file to make it square for the cable grommet. The measurements for the bottom bolt hole are 2-1/8" from the left edge and 3-1/4" up from the curve in the floorpan. Make a cardboard cutout in the shape of an L with those measurements and use it to locate the bottom hole. Gdavis just did it recently on his truck Patches and it worked great.
Edit: you will have to remove the sound deadener in that spot to do it but you can put it back after the modification is complete.
__________________
Please call me Brian.
Check out My 1972 SWB Fleetside 5.3L Vortec Restomod Build

Last edited by Xeen; 06-14-2013 at 05:59 PM.
Xeen is offline   Reply With Quote
Old 06-14-2013, 05:59 PM   #5
gdavis
Registered User
 
gdavis's Avatar
 
Join Date: Aug 2012
Location: Homosassa, Fl.
Posts: 2,965
Re: Too much sound deadening under brake & throttle

Yes it does work and I like it.
__________________
Check out Patches

Cars I owned in the past.
1962 chev II Nova - 1965 Chevelle SS - (2)1966 Chevelle SS 1965 chev C10 57 belair chev
1967 Chevelle SS - 1969 Chevelle SS - 1972 Chevelle SS

1967 Buick electra 225 1995 Harley Davidson bager

What does not kill you will make you stronger

1968 c10 short wheel base stepper
gdavis is offline   Reply With Quote
Old 06-17-2013, 10:54 AM   #6
Lugnutt
Registered User
 
Lugnutt's Avatar
 
Join Date: Jan 2007
Location: San Jose, California
Posts: 194
Re: Too much sound deadening under brake & throttle

[QUOTE=Xeen;6123639]OK well if this is a 71-72 all you have to do is install the Rod support (the triangle shaped plastic piece) on top of the carpet and it will work like it's supposed to.

Yes my truck is a 72 and I found that triangle piece that you are referring to. My carpet doesn't go up that high but I can see that if I shim that part out, it will give me more pedal space, thanks.

On the brake side, I was able to extend the brake rod above the brake pedal under the dash by removing all the steering column brackets, lowering the steering column, pulling the pin on the shaft, loosening the jam nut and un-screwing the rod further than it was before. It's perfect now.

Next, I'll try shimming the throttle linkage plate like you mentioned.

Thanks for your inputs
Lugnutt is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:56 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com