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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Brakes and Braking Systems => Topic started by: Swims350 on August 14, 2010, 05:47:43 pm

Title: auto trucks brake pedal, why some wide some narrow?
Post by: Swims350 on August 14, 2010, 05:47:43 pm
Here's a stumper for you guys, I asked this on 67-72chevytrucks and it's got alot puzzled as it does me.Our 84 custom deluxe has a narrow brake pedal like ones the stick shifts would have, it's factory auto via the rpo's. There's another guys truck on 67-72 that has the narrow pedal and my dad said his dad's had it as well and it was bought new from the factory and was auto. The 86 k10 we had was wide pedal as almost every other auto I ever seen has.

ANy idea why some were wide and some narrow? Both our trucks have power brakes, and as far as I know it's factory power. ANyway to tell rpo's without the sticker, like the vin?

narrow
(http://i73.photobucket.com/albums/i209/alwaysbroke53/100_3283.jpg)
(http://i73.photobucket.com/albums/i209/alwaysbroke53/100_3222.jpg)

Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: 454ss on August 14, 2010, 08:22:41 pm
I have noticed this too and there doesn't seem to be any rhyme or reason to it. Though all our V8 trucks had a wide pedal while my 6 had a narrow one...
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Swims350 on August 14, 2010, 08:34:25 pm
this truck is v8 factory and it's narrow pedal. lol.
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: 454ss on August 14, 2010, 08:47:36 pm
perhaps it's just whatever was available in the parts bin when the truck was built.
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: zieg85 on August 14, 2010, 08:52:36 pm
I think the lower trim levels it was hit or miss.  It was common to get different dash color pieces on the Biscayne but that is another thread
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: VileZambonie on August 14, 2010, 10:41:13 pm
I've only seen it with the m/t set up on any of the trucks I've owned. Sorry I'm no help I guess
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Irish_Alley on August 15, 2010, 12:16:12 am
maybe it has to do with the brakes ex diffrent brake peddle for jb3 vs jb5? a shot in the dark but to me kind of makes sense
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Swims350 on August 15, 2010, 01:00:04 pm
this is the first I ever seen in person to have the narrow one, every narrow one I ever seen was on a stick shift like vile said, and auto's had the wide ones, but not this truck LOl or the other I seen, but it's hard to say it could have been changed or something. As for the brakes this one has the LD brakes same as the 86 4x4 we had and it had a wide pedal.
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Captkaos on August 16, 2010, 05:25:27 pm
That is a Manual brake setup.  I would say it was changed out at some point.  What does the mount look like at the top?
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Swims350 on August 16, 2010, 08:24:28 pm
the outside firewall mount? I'll have to look I got some pics but not too much right on pics of it.

Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: beastie_3 on August 16, 2010, 11:46:11 pm
I think Capt might be asking about the top of the brake pedal bracket on the inside of the firewall.
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: 454ss on August 17, 2010, 12:12:05 am
Hmmmm...My '82 had factory power brakes (on the RPO sheet) and still had the narrow pedal.
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Swims350 on August 17, 2010, 10:29:47 am
that's why I was asking because I have no clue what it looks like from underneath.
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Captkaos on August 17, 2010, 12:38:26 pm
Just look up where the pivot is and take a pic. 
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Swims350 on August 17, 2010, 12:55:15 pm
ok I'll have to do that next time I get a chance. But how are they different? Also if it is then that means I could convert to manual brakes easy lol?
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Captkaos on August 17, 2010, 02:43:36 pm
Auto assemblies only have one cage, manuals have two for the third pedal.
Title: Re: auto trucks brake pedal, why some wide some narrow?
Post by: Swims350 on August 17, 2010, 08:19:54 pm
ok I understand that and that would mean for me to do a stick shift if it's got the dual cage all I'd need is the pedal for the clutch only and not a new brake pedal and bracket to go with the clutch pedal. I'll have t check it out.