Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

DBW Pedal Mounting

Thread Tools
 
Search this Thread
 
Old Aug 8, 2016 | 08:50 PM
  #1  
NorCalChevelle's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Sep 2009
Posts: 85
Likes: 2
From: Northern CA
Default DBW Pedal Mounting

Anybody have luck mounting GM part # 25835421 (believe it's a Corvette pedal)? I got it with my Speartech wiring harness and looked at it compared to where my stock pedal was mounted. As expected, it doesn't line up with the stock mounting location (I figured that would be the case, no biggie). But, this pedal is pretty large (long) and curves to the right a good amount. I was wondering if any vendors/places might sell a bracket that can be used to mount this (I have a '72 Chevelle).

Other option would be for me to find another pedal assembly that I've seen brackets for (like GM part# 10379038 or another model). I'm just not sure if I'd have to recalibrate the ECM that came with my Speartech harness.

Here's a link to the pedal I have:
https://www.summitracing.com/parts/ado-
Reply
Old Aug 8, 2016 | 08:53 PM
  #2  
Project GatTagO's Avatar
TECH Senior Member
20 Year Member
Liked
Loved
Top Answer: 1
iTrader: (7)
 
Joined: Mar 2003
Posts: 10,615
Likes: 1,883
From: Little Austin
Default

I used the 25835421 pedal on my 1970 GTO. Look in my build thread. There are no direct fit pedals for this swap.

Andrew
Reply
Old Aug 8, 2016 | 09:19 PM
  #3  
NorCalChevelle's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Sep 2009
Posts: 85
Likes: 2
From: Northern CA
Default

Yah, knew there was no direct replacement. I'll check out your build thread (thanks for info).
Reply
Old Aug 9, 2016 | 10:46 AM
  #4  
kwhizz's Avatar
TECH Fanatic
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2008
Posts: 1,570
Likes: 173
Default

Here's what I have been doing........probably better way's to get there but....this works for me as it gives the adjustability needed in a compromised mounting area......This is from the pedal supplied in GM's connect and cruise set-up........but.......I have done all my swaps this same way........in the first picture you can see the adaptor plate made that get's welded to the pedal mount as supplied.....( I cut off some of the GM mounting tabs)......anyhow........the concept is to have three studs (I use 1/4-20 set screws which allow holding the screw with the allen wrench while tightening).....as you can see....the cardboard represents the Firewall (Which is not flat).......so...I drill three holes thru the firewall and have nylock nuts on the engine side........then there are three nuts to tighten against the firewall......do not tighten them as they will have to be inserted thru the adaptor plate on the pedal assy........get them in and then tighten them against the firewall......then you can use the nuts to adjust the pedal (up, down or sideways) and after getting it where you want it then tighten everything up and you are finished.........(use Lock washers)........Mickey Mouse but it works.......

Name:  71909DD5-27C1-4E65-9B8E-14C3C3D95A52.jpg
Views: 2708
Size:  4.38 MB

Name:  21DA6251-31CB-42E1-BD66-A3955C8D9B64.jpg
Views: 3101
Size:  1.96 MB

Name:  5091A314-3522-4AF3-BB7D-B103D1F7E10A.jpg
Views: 2614
Size:  2.13 MB

Name:  28406430-47C5-4AD9-883F-F6BB0541B53B.jpg
Views: 2553
Size:  2.46 MB

Name:  B439070F-0F65-4AC6-8E5F-EF771EF9C926.jpg
Views: 2835
Size:  2.11 MB

Ken
Reply
Old Aug 9, 2016 | 12:26 PM
  #5  
NorCalChevelle's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Sep 2009
Posts: 85
Likes: 2
From: Northern CA
Default

Thanks Ken.
Reply
Old Aug 9, 2016 | 02:04 PM
  #6  
Cheese Weasel's Avatar
Launching!
 
Joined: Jul 2016
Posts: 286
Likes: 6
Default

My setup is somewhat similar to what Ken described, with one addition - I had to do some "customizing" (using a BFH) at the top of where the pedal mounts so that the pedal would be at approximately the correct angle. (I had to push the metal "back" toward the engine a bit.) Once the metal was roughly where it needed to be, I used threaded rod + "nylocks" to fine-tune the pedal's position.


Now that I've done that, the pedal looks like it came from the factory in my car.
Reply
Old Aug 9, 2016 | 02:08 PM
  #7  
NorCalChevelle's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Sep 2009
Posts: 85
Likes: 2
From: Northern CA
Default

Originally Posted by Cheese Weasel
My setup is somewhat similar to what Ken described, with one addition - I had to do some "customizing" (using a BFH) at the top of where the pedal mounts so that the pedal would be at approximately the correct angle. (I had to push the metal "back" toward the engine a bit.)

Now that I've done that, the pedal looks like it came from the factory in my car.
Got any pics by chance?
Reply
Old Aug 9, 2016 | 02:12 PM
  #8  
Cheese Weasel's Avatar
Launching!
 
Joined: Jul 2016
Posts: 286
Likes: 6
Default

I'll have to track down my camera (haven't used it in a while), but I can probably snap one or two later today...
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Aug 9, 2016 | 04:18 PM
  #9  
NorCalChevelle's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Sep 2009
Posts: 85
Likes: 2
From: Northern CA
Default

Originally Posted by Cheese Weasel
I'll have to track down my camera (haven't used it in a while), but I can probably snap one or two later today...
Reply
Old Aug 11, 2016 | 07:05 AM
  #10  
joyridin''s Avatar
TECH Enthusiast
10 Year Member
iTrader: (1)
 
Joined: Jan 2014
Posts: 628
Likes: 36
Default

My set-up is probably a lot different, but I took my original pedal and made a hard rod to connect it to the DBW module. I then mounted the DBW set-up on the firewall. When you push the gas pedal, it pushes back on the module arm.
Reply
Old Aug 12, 2016 | 04:27 AM
  #11  
casias's Avatar
TECH Regular
10 Year Member
iTrader: (1)
 
Joined: Aug 2012
Posts: 495
Likes: 4
Default

Here are pictures of how I did mine. Usually you just have to start with some cardboard and scissors, and see what you can come up with. The DBW pedal has to be mounted about 4 inches higher, so I made a plate.


Original pedal showing two attachment nuts.


Name:  IMG_1980_zpsbibnm8r1.jpg
Views: 2440
Size:  802.6 KB


A piece of scrap metal. Cut down and holes drilled.

Name:  IMG_1983_zpsdt00aepl.jpg
Views: 2306
Size:  879.5 KB


Name:  IMG_1982_zpshqhh6wpg.jpg
Views: 2321
Size:  1.70 MB


Pedal welded to scrap


Name:  IMG_1984_zpsu3fmwwvh.jpg
Views: 2418
Size:  1.62 MB


And mounted.

Name:  IMG_1985_zpsuhni3gn9.jpg
Views: 2515
Size:  825.2 KB
Reply
Old Aug 12, 2016 | 11:27 AM
  #12  
NorCalChevelle's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Sep 2009
Posts: 85
Likes: 2
From: Northern CA
Default

Originally Posted by casias
Here are pictures of how I did mine. Usually you just have to start with some cardboard and scissors, and see what you can come up with. The DBW pedal has to be mounted about 4 inches higher, so I made a plate.


Original pedal showing two attachment nuts.





A piece of scrap metal. Cut down and holes drilled.







Pedal welded to scrap





And mounted.

Great, thanks! That's probably what I'm leaning toward doing.
Reply
Old Aug 18, 2016 | 09:21 PM
  #13  
Project GatTagO's Avatar
TECH Senior Member
20 Year Member
Liked
Loved
Top Answer: 1
iTrader: (7)
 
Joined: Mar 2003
Posts: 10,615
Likes: 1,883
From: Little Austin
Default

I used the Monte Carlo pedal as well, and as I recall, I used one of the original holes that help the old throttle pedal and then made another hole. Mounted directly to the firewall...

Andrew
Reply
Old Aug 18, 2016 | 09:48 PM
  #14  
NorCalChevelle's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Sep 2009
Posts: 85
Likes: 2
From: Northern CA
Default

Originally Posted by Project GatTagO
I used the Monte Carlo pedal as well, and as I recall, I used one of the original holes that help the old throttle pedal and then made another hole. Mounted directly to the firewall...

Andrew
Thanks for the info Andrew.
Reply




All times are GMT -5. The time now is 09:53 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE