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04-19-2013, 12:11 AM
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#1 |
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Registered User
Join Date: Aug 2012
Location: Neskowin OR
Posts: 1,153
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Manual drum master cylinder
Hey guys, I'm probably going to have to go with manual drums for the time being on my truck due to my budget, but i wanted to find out something about a difference in the 2 cabs I have had. My old cab (a '69) had only the hole for the pushrod and had manual brakes. The new (to me cab, a '68) has a hole for the booster lever also. There are 4 bolts on both. Is there a plate that covers this area on manual trucks? My old cab was solid in that area. I've attached some pics. I couldn't find anything on the LMC site or anywhere else.
Thanks for the help. |
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04-19-2013, 01:28 AM
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#2 |
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C10 addict
Join Date: Apr 2006
Location: Arizona
Posts: 2,432
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Re: Manual drum master cylinder
Which hole are you referring to in your pictures? Manual and Power brakes use the same pass-thru hole in the firewall
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Jared 67 C10 CST Short Fleet Big Window 65 C10 Custom Short Fleet Big Window 67 Camaro RS |
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04-19-2013, 01:42 AM
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#3 |
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Registered User
Join Date: Aug 2012
Location: Neskowin OR
Posts: 1,153
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Re: Manual drum master cylinder
The hole on the old cab was just a round hole for the pushrod, the one in the new cab is larger and is more rectangular for the pushrod lever. In the pic (sorry it's not very clear) its right above the bottom 2 holes and runs up to the two 2. It's for clearence for the lever.
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04-19-2013, 02:09 AM
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#4 |
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C10 addict
Join Date: Apr 2006
Location: Arizona
Posts: 2,432
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Re: Manual drum master cylinder
Sounds like someone modified it at some point for a non 67-72 booster, the hole should be the same with or without power brakes
Posted via Mobile Device
__________________
Jared 67 C10 CST Short Fleet Big Window 65 C10 Custom Short Fleet Big Window 67 Camaro RS |
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04-19-2013, 02:13 AM
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#5 |
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Registered User
Join Date: Aug 2012
Location: Neskowin OR
Posts: 1,153
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Re: Manual drum master cylinder
Yea I kinda thought so. I'll just make a plate to cover it up. Easy enough but figured i'd find out if there was a cover plate for non-optioned trucks.
I'll take a pic at home of what i have, but you're probably right. Thanks. 
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04-19-2013, 09:57 AM
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#6 |
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Active Member
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Manual drum master cylinder
Just to verify what was said above - my 68 and 69 have identical mounting holes. I used brackets off the 69 to convert my 68 to power brakes.
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68 GMC 250/3 speed Saginaw p/b p/s 69 Chevy 350/350 currently in pieces still lookin for a cab 06 Trailblazer I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive... |
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