Firewall mount question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

tx69gmc · 08-22-2006, 10:35 PM

On the attached pictures, how does the support on the underside of the cab mount to the one on the firewall. The one on the passenger side just slid out. Not sure if it is supposed to be this way or not. Are these two pieces welded together? Also, is the floor pan welded to the firewall or just sealed with seam sealer so that it can flex a bit? Thanks

matthufham · 08-22-2006, 10:47 PM

that's weird. i don't know how they're put together

Aarons72s · 08-23-2006, 06:03 AM

They ere originally spot welded together. The ones on my orange truck driver side had broke so when I repaired it I used 4 grade 8 bolts instead to reatach the the firewall mounts to the outrigger and construction adhesive. I used the construction adhesive to seal as well as add more strength. As for the floor pan it is spot welded together with seem sealer on top to seal the joint from water and rust. Of note the seam sealer only works if they actually apply it properly ( thanks flint!). I hopre this helps. Good Luck.

**jaros44sr** · 08-23-2006, 06:57 AM

Mine was separated there too! I drilled holes, clamped and mig welded it back together. Not sure I understand the other question. I can take pics. of that area if it helps, as mine is still apart. Jim

tx69gmc · 08-23-2006, 05:29 PM

Ttt

08-22-2006, 10:35 PM	#1
tx69gmc Registered User Join Date: Nov 2005 Location: Denton,TX Posts: 61	Firewall mount question On the attached pictures, how does the support on the underside of the cab mount to the one on the firewall. The one on the passenger side just slid out. Not sure if it is supposed to be this way or not. Are these two pieces welded together? Also, is the floor pan welded to the firewall or just sealed with seam sealer so that it can flex a bit? Thanks Attached Images

08-22-2006, 10:47 PM	#2
matthufham Registered User Join Date: Feb 2005 Location: Carl Junction, Missouri Posts: 2,061	Re: Firewall mount question that's weird. i don't know how they're put together

08-23-2006, 06:03 AM	#3
Aarons72s Registered User Join Date: Apr 2006 Location: oklahoma Posts: 10,670	Re: Firewall mount question They ere originally spot welded together. The ones on my orange truck driver side had broke so when I repaired it I used 4 grade 8 bolts instead to reatach the the firewall mounts to the outrigger and construction adhesive. I used the construction adhesive to seal as well as add more strength. As for the floor pan it is spot welded together with seem sealer on top to seal the joint from water and rust. Of note the seam sealer only works if they actually apply it properly ( thanks flint!). I hopre this helps. Good Luck.

08-23-2006, 06:57 AM	#4
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,704	Re: Firewall mount question Mine was separated there too! I drilled holes, clamped and mig welded it back together. Not sure I understand the other question. I can take pics. of that area if it helps, as mine is still apart. Jim __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 08-23-2006 at 06:58 AM.

08-23-2006, 05:29 PM	#5
tx69gmc Registered User Join Date: Nov 2005 Location: Denton,TX Posts: 61	Re: Firewall mount question Ttt



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