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Thread: Smoothed Firewall Questions
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03-29-2008 #1
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Smoothed Firewall Questions
How did you guys shave your firewalls? I dont want to use the DSE plate since I want it completely flat with no seam. Maybe just one big piece of sheetmetal and cutout the holes I need?
John S.
68 "Bloodline" Camaro in assembly...
Speedtech Sub, Alston G-Billet/Fab 9 rear, Ridetech coil overs, Moser axles, Fesler 19's, Lots of Anvil parts,Twin tubo LS3/T56, Carbon fiber manifold, and the list goes on and on..........
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03-30-2008 #2
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We butt weld 16 gauge sheetmetal, and weld the seam up solid using staggered stitch welding.
03-30-2008 #3
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No picture now, but that's how we did mine.
Originally Posted by ProdigyCustoms
Welded the seam, uneeded holes and filled the heater box hole w. 16 ga.
Looks good.Steve
'68 Camaro - SBC, TKO600, 3.73 Moser 12-bolt, Speedtech, ATS-AFX, Hotchkis, Forgeline, Ron Davis and C5 brakes (Kore3), Holley Terminator TBI.
Check it Out Here
03-30-2008 #4
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Should the old firewall be removed or just weld over it?
John S.
68 "Bloodline" Camaro in assembly...
Speedtech Sub, Alston G-Billet/Fab 9 rear, Ridetech coil overs, Moser axles, Fesler 19's, Lots of Anvil parts,Twin tubo LS3/T56, Carbon fiber manifold, and the list goes on and on..........
03-30-2008 #5
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Remove the old or you will have a vibration nightmare.
03-30-2008 #6
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i did the firewall on my truck 3 different way's.
1st way was to just remove the old ac box
2nd way - try to smooth it a little more
3rd way - way exactly like i wanted it
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https://www.pro-touring.com/forum/sh...=10772&page=27marty-mj
GarageScene.net High Speed Welding KDHotrods RecoveryRoomInteriors WegnerAutomotive Autometer Ride-Tech
03-31-2008 #7
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I made little fillers on mine and welded them in to the blower motor and heater core holes along with the windshield wiper hole since I moved it inside the cowl. I also welded in smaller pieces of metal in to the bolt holes and any other hole that was in the firewall that I wasn't going to need. I had to straighten out the lip around the heater core hole with vice grips, a body hammer and dolly. Once I had the pieces in and ground smooth, I skim coated with body filler. I left the line between the firewall and cowl section because I think that a totally smooth firewall looks a little bland to me.
Wiper motor hole:
Body filler before sanding:
Finished and painted: (seam sealer dried a little to quickly so It's a little rough, but not bad)
03-31-2008 #8
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Hey guys, this is my first time to post and I may be to late, but attached are several pic of smoothing the firewall on my 68. I also had to modify my tranny tunnal for a T-56 as well as make it look a little better. To cut down on vibration, I welded in several places through the existing firewall to the new one to tie them together.
03-31-2008 #9
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04-07-2008 #10
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looks nice....did the same to mine
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