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| | | Forums66 Topics128,032 Posts1,055,517 Members48,425 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Dec 2004 Posts: 91 Wrench Fetcher | | Wrench Fetcher Joined: Dec 2004 Posts: 91 | I am in the process of puttin the ol boy back together and will be installing gauges , wiring, choke throttle etc. As I look at the firewall, I see 30 or so holes of various sizes and shapes. Is there a diagram somewhere that shows what goes through what hole? It's on a '51 1/2 ton. Thanks | | | | | Joined: Sep 2006 Posts: 2,393 Shop Shark | | Shop Shark Joined: Sep 2006 Posts: 2,393 | If you can get a look at an assembly manual,it'll show what goes where. Try searching http://chevy.oldcarmanualproject.com/
Drew
| | | | | Joined: Jul 2001 Posts: 3,887 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Jul 2001 Posts: 3,887 | if you can't find the assembly manual, look thru the shop manual, there's likely a few pics in there to guide you .... most things go where you'd expect, the shortest route .... another guide is the firewall grommet kits from the vendors, usually there's only a half dozen needed and one of them carries multiple items, but with 30, a fair number of yours will be non-original holes that'll need to be plugged  Bill | | | | | Joined: Sep 2008 Posts: 137 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2008 Posts: 137 | A bunch of these are where the retainer clips for the inside firewall cover attach. Maybe 8-10, I can't remember. | | |
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