70 Nova firewall help - The Supercar Registry

04-21-2020, 02:58 AM

L78_Nova L78_Nova is offline

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70 Nova firewall help

Hey guys, I'm looking for some help to identify unnecessary holes in my firewall before painting.
The only ones I know for certain are #4 &#6 for the wiring gutter
I think #10 is for a speedo cable clip but this hole was filled solid with tar/butyl sealer.

When I pulled this apart the wiring harness was "P" clamped to the firewall and unfortunately I did not mark the holes then.

1970 L78 4Speed, no gauges

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68 Acadian SS-350 auto/AC driver
70 Nova SS-396/375HP Bench Stick
72 Nova SS-350 5sp Mini Tubbed
67 Chevelle Conv. SS-427 clone
70 Chevelle SS-454 LS-5 M-22

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