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#1 |
Registered User
Join Date: Nov 2007
Location: Indianapolis
Posts: 1,162
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Firewall modification for American Autowire
bought the American Autowiring kit for my 68. The square hole for the wire bulkhead needs to be enlarged. What have you guys cut the firewall with? Dremel cutoff tool?
Thanks, Larry |
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#2 |
Registered User
Join Date: Apr 2018
Location: Austin
Posts: 75
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Re: Firewall modification for American Autowire
yep a dremel cut off wheel attachment.
easy to do from the engine bay side. |
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#3 |
Registered User
Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,662
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Re: Firewall modification for American Autowire
A dremel with a cutoff wheel is what I used as well. I also used one of the grinding stone attachments to smooth the sharp edges.
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72 C10 lwb fleetside -stock 350/350 combo Last edited by 68 P.O.S.; 12-17-2018 at 12:24 PM. |
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#4 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,720
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Re: Firewall modification for American Autowire
I tried opening it up with a jigsaw and a metal blade while we have the front clip off, but that was a bust. Firewall was not flat enough for the short metal cutting blade. Used a 4” grinder with a cut off wheel, but I see the Dremel as being the best tool if you are under the dash.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#5 |
Registered User
Join Date: Apr 2008
Location: Md
Posts: 2,475
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Re: Firewall modification for American Autowire
You can drill rows of 1/16" holes and then file it flat...not fun even with the clip off.
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http://67-72chevytrucks.com/vboard/s...d.php?t=635605 |
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#6 |
Registered User
Join Date: Nov 2007
Location: Indianapolis
Posts: 1,162
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Re: Firewall modification for American Autowire
thank you everybody, I guess I'll use the dremel cut off wheel.
how did you cut it from the firewall side, flip the template over? thanks, Larry |
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#7 |
Registered User
Join Date: Apr 2008
Location: Md
Posts: 2,475
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Re: Firewall modification for American Autowire
I think you could flip the template.....I drilled mine from the inside, filed from both sides. Nice thick sheet metal, makes my neck hurt just thinking about it...Good
Luck...
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http://67-72chevytrucks.com/vboard/s...d.php?t=635605 |
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#8 |
Registered User
Join Date: Jan 2007
Location: Puyallup, WA
Posts: 1,662
|
Re: Firewall modification for American Autowire
I did it from the engine bay. Seemed a little easier to me than from in the cab. Be careful of the sound deadener/insulation if you have it installed or trim it back cause it will catch fire.
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72 C10 lwb fleetside -stock 350/350 combo |
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