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Russell Ashley · 04-23-2012, 01:35 PM

If you are talking about the inside of your firewall as in the second pic, that area will be permanetly covered with a firewall cover and heater or a/c. It's not like anyone will ever see it so I don't see any benefit to spending time and money to put filler on it. On the inside of my firewall I just smoothed the welds where I had patched holes and undercoated it, and then put a formed ABS cover on it. I recommend and ABS cover, btw. It comes with thick jute insulation and looks great.

04-23-2012, 01:35 PM	#4
Russell Ashley Registered User Join Date: May 2010 Location: Lawrenceville, Ga Posts: 2,648	Re: 55 chevy filler question If you are talking about the inside of your firewall as in the second pic, that area will be permanetly covered with a firewall cover and heater or a/c. It's not like anyone will ever see it so I don't see any benefit to spending time and money to put filler on it. On the inside of my firewall I just smoothed the welds where I had patched holes and undercoated it, and then put a formed ABS cover on it. I recommend and ABS cover, btw. It comes with thick jute insulation and looks great.