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Old 04-01-2013, 05:35 PM   #1
da_bears_da1
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Firewall Help Needed

I am cleaning up the firewall on my 65 SBSS; the PO drilled a number of holes. I want to weld up everything that I am not going to use. I am trying to figure out what the two holes circled below are for. I really would appreciate some guidance on what the holes are for. Thanks!
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Old 04-01-2013, 05:52 PM   #2
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Re: Firewall Help Needed

clutch push rod and emergency brake cable(small hole)
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Old 04-01-2013, 09:13 PM   #3
da_bears_da1
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Re: Firewall Help Needed

Thank you!
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Old 04-01-2013, 11:32 PM   #4
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Re: Firewall Help Needed

Not to create confusion, I was looking into grommets for those holes for my '64 over the weekend and the big one had nothing going through it, the small one had the speedometer cable, and the parking brake cable went through the rectangular hole just below the steering opening.
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Old 04-02-2013, 01:56 AM   #5
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Re: Firewall Help Needed

clutch and speedo cable e brake is the square one. are planning on running the factory sound deadner on the firewall? if not you can fill them too.
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Old 04-02-2013, 07:15 AM   #6
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Re: Firewall Help Needed

Quote:
Originally Posted by ACK View Post
Not to create confusion, I was looking into grommets for those holes for my '64 over the weekend and the big one had nothing going through it, the small one had the speedometer cable, and the parking brake cable went through the rectangular hole just below the steering opening.
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clutch and speedo cable e brake is the square one. are planning on running the factory sound deadner on the firewall? if not you can fill them too.
agree, just pulled mine apart... clutch speedo, then the square is e. brake


anyone know how the automatic trucks were set up? no hole for the clutch rod, or did they have a rubber plug?
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Old 04-02-2013, 08:19 AM   #7
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Re: Firewall Help Needed

Quote:
Originally Posted by ACK View Post
Not to create confusion, I was looking into grommets for those holes for my '64 over the weekend and the big one had nothing going through it, the small one had the speedometer cable, and the parking brake cable went through the rectangular hole just below the steering opening.
Glad you clarified it! From what I could tell from the shop manual, I thought the square one was e brake.

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clutch and speedo cable e brake is the square one. are planning on running the factory sound deadner on the firewall? if not you can fill them too.
I am planning not using the firewall mat, I am going to use Dynamat. I have already removed the studs for the firewall mat and filled them. Will go ahead and fill the larger one for the clutch, mine is an automatic. It is kind of confusing since this same cab was used for so many different versions of the truck.
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Old 04-02-2013, 12:42 PM   #8
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Re: Firewall Help Needed

yes square is e brake as it goes through the frame. glad to help..
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Old 04-02-2013, 02:46 PM   #9
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Re: Firewall Help Needed

So the mystery is what is the large round one then?
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Old 04-03-2013, 08:59 AM   #10
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Re: Firewall Help Needed

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So the mystery is what is the large round one then?
First response said it was the clutch push rod which makes sense.
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Old 04-03-2013, 10:52 AM   #11
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Re: Firewall Help Needed

The small hole next to the large one is where the plug for the tail lights harness goes through.
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Old 04-03-2013, 02:08 PM   #12
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Re: Firewall Help Needed

wrong sir. tail lights goes higher on the fire wall. the big hole is the clutch rod hole. it large because of the swing of the bell crank. When factory it has a boot on it.
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Old 04-03-2013, 02:43 PM   #13
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Re: Firewall Help Needed

ok here is the diagram for the cluch bell crank.hope this helps
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Old 04-03-2013, 05:25 PM   #14
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Re: Firewall Help Needed

I have an automatic to, is there an aftermarket plug for the clutch hole?
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Old 04-03-2013, 06:49 PM   #15
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Re: Firewall Help Needed

not that i know of but you could use a plug for a sink like for the extra holes for filltered water .
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Old 04-03-2013, 06:50 PM   #16
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Re: Firewall Help Needed

looks like you got the welder just make a patch for it.
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Old 04-04-2013, 10:28 AM   #17
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Re: Firewall Help Needed

clutch rod for sure on one of them
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