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Old 01-01-2011, 11:42 PM   #17
73gmc454
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Join Date: Dec 2010
Location: louisville ohio
Posts: 375
Re: 77 yellow gmc swb

Quote:
Originally Posted by baclay9 View Post
Nice work man. I am converting my cab from AC to Non-AC as well. Just out of curiosity how did you go about cutting the hole for the heater box in the correct place?
When my buddy said he was goin to scrap his 81 dd i went to his house and remove the entire heater assembly, after I got it out I took a hunk of cardboard and cut it to fit the shape of the firewall from the top down the folded edge on the right taped it on really good then marked the holes from the inside , cut those holes out taped it to my firewall and seen what I needed to fill in and cut out , I did fold an edge in on the part that filled in the big hole that area wanted to oil can - like pop in an out but the fold stiffend it up, it wasnt really that bad I'm glad I did it the gm a/c box is huge !
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