1966 Burb floor/firewall replacment questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GMCMG · 12-12-2011, 07:14 PM

I recently scored a 66 Chevy Suburban (my first one!)

(pics to follow when I get a decent day). It is really in decent shape from behind the front doors back. The back doors (barn doors) are awesome.
The front floorpan, rockers, and structural area on either end of the firewall are shot. I was wondering if everything was the same up here on the suburbans and pickup cabs.
I need to fix the rot, and would like to put a GMC dash in it. If it was so simple as cutting off a cab from the dash down, and splicing to the suburban body...?
Am I dreaming here? Does anyone have any experience with this?

Big Fenders · 12-12-2011, 09:53 PM

From and including the doors forward..sheet metal is the same as pickups.
Bob

**Corts60** · 12-12-2011, 10:02 PM

The pass. side rocker/floor pan is a bit different than the pickups because it includes a step area to get into the back seat. Other than that, I think they are identical.

GMCMG · 12-12-2011, 10:40 PM

Thanks, guys. I figure I could probably have done some measuring/looking and figured close, but I'd have to get it in the garage and in the air. A P.O. started the lowering process, so it's hard to get under right now. I didn't want to start planning based on a best guess.
I have a 64 GMC cab that was for my project truck, RUST FREE. A few months ago we had a tornado come through, and aside from damage to our house and trees, rolled my cab in the yard. I've been torn - find a donor cab for the top half and fix it so I can have my dream pickup, or cut it up so I can have my dream burb!
I'm so excited about getting it driveable. I'd love to take the time/money and do it all from the ground up, but I'm going to give in to the 'instant gratification' desire!
I've got to get the garage cleaned out, and then the burb will move in...

**Captainfab** · 12-13-2011, 01:29 AM

I have read that the front roof area of the Suburbans has a different crown than the pickups do. If you cut and weld in the A pillars, that should be fine.

gostranger · 12-13-2011, 07:11 AM

I cant wait to see pics of the suburban glad to hear you got one and are going to save it!
Posted via Mobile Device

GMCMG · 12-18-2011, 02:46 PM

Sorry it took so long; here are pics as promised! Some good and some bad. The front is not as bad as I remembered, and the back is a little worse than I remembered. All told, I'm very happy with its condition for a Missouri burb.

GMCMG · 12-18-2011, 02:53 PM

More pics...

GMCMG · 12-18-2011, 02:59 PM

and more...

GMCMG · 12-18-2011, 03:02 PM

last couple...
The roof has four spots like this where there used to be a roof rack. Wish they had sealed it before it ruined the headliner.
And, a little corner ding that ought to be fun.

Crazy Rusty · 12-18-2011, 07:26 PM

Quote:

Originally Posted by Corts60

The pass. side rocker/floor pan is a bit different than the pickups because it includes a step area to get into the back seat. Other than that, I think they are identical.

My burb was in the same condition and as mentioned above, the only thing I found different was the pass. floor pan (though I didnt change the roof).

GMCMG · 12-18-2011, 08:05 PM

Quote:

Originally Posted by Crazy Rusty

My burb was in the same condition and as mentioned above, the only thing I found different was the pass. floor pan (though I didnt change the roof).

So, did you replace or patch? I'm starting to lean toward patching; the thought of a full replacement of the floor and firewall is somewhat overwhelming, especially since I have zero experience. I sure don't want to screw it up.

Crazy Rusty · 12-18-2011, 08:57 PM

I got a bunch of patches from LMC, and it worked really well. The welding was pretty easy, just a million spot welds. All parts fit except that passenger side because of the step. The replacement patch isnt flat since it doesnt have that suburban step area but all you have to do is cut the patch a bit and work the pieces around to fit correctly. I'll take some pics tomorrow.

12-12-2011, 07:14 PM	#1
GMCMG Registered User Join Date: Nov 2009 Location: Center, MO Posts: 121	1966 Burb floor/firewall replacment questions I recently scored a 66 Chevy Suburban (my first one!) (pics to follow when I get a decent day). It is really in decent shape from behind the front doors back. The back doors (barn doors) are awesome. The front floorpan, rockers, and structural area on either end of the firewall are shot. I was wondering if everything was the same up here on the suburbans and pickup cabs. I need to fix the rot, and would like to put a GMC dash in it. If it was so simple as cutting off a cab from the dash down, and splicing to the suburban body...? Am I dreaming here? Does anyone have any experience with this? __________________ GMCMG 1964 GMC 1/2 ton LWB project - 1982 GMC 6.2 diesel engine/suspension donor - 1966 Chevy 3/4 ton frame/doors/fenders donor - tons of parts - cause you can't build a truck without 4 of everything! 2001 3/4HD Duramax Diesel extended cab lwb4x4 1984 Chevy C30 6.2 diesel lift truck (project) 1962 GMC w/5 lugs, 350/350 auto (was for parts, but couldn't bring myself to do it!) glascock.m@hotmail.com

12-12-2011, 09:53 PM	#2
Big Fenders Registered User Join Date: Mar 2008 Location: Tucson Arizona Posts: 264	Re: 1966 Burb floor/firewall replacment questions From and including the doors forward..sheet metal is the same as pickups. Bob

12-12-2011, 10:02 PM	#3
Corts60 Just here to tinker Join Date: Jun 2008 Location: Holland, MI Posts: 3,697	Re: 1966 Burb floor/firewall replacment questions The pass. side rocker/floor pan is a bit different than the pickups because it includes a step area to get into the back seat. Other than that, I think they are identical. __________________ 78 C10 SWB Diesel #1 (wrecked)http://67-72chevytrucks.com/vboard/s...1978+silverado 78 C10 SWB Diesel #2 (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=650751 60 GMC Suburban (sold)http://67-72chevytrucks.com/vboard/s...d.php?t=445526 60 GMC 1000 (sold)http://67-72chevytrucks.com/vboard/showthread.php?t=298235 67 GMC 1500 (sold) http://67-72chevytrucks.com/vboard/s...d.php?t=803695 73 Chevy C20(Daily)http://67-72chevytrucks.com/vboard/s...d.php?t=852767 86 Suburban(summer unit) http://67-72chevytrucks.com/vboard/s...d.php?t=810697 88 Suburban 4x4(sold)

12-12-2011, 10:40 PM	#4
GMCMG Registered User Join Date: Nov 2009 Location: Center, MO Posts: 121	Re: 1966 Burb floor/firewall replacement questions Thanks, guys. I figure I could probably have done some measuring/looking and figured close, but I'd have to get it in the garage and in the air. A P.O. started the lowering process, so it's hard to get under right now. I didn't want to start planning based on a best guess. I have a 64 GMC cab that was for my project truck, RUST FREE. A few months ago we had a tornado come through, and aside from damage to our house and trees, rolled my cab in the yard. I've been torn - find a donor cab for the top half and fix it so I can have my dream pickup, or cut it up so I can have my dream burb! I'm so excited about getting it driveable. I'd love to take the time/money and do it all from the ground up, but I'm going to give in to the 'instant gratification' desire! I've got to get the garage cleaned out, and then the burb will move in... __________________ GMCMG 1964 GMC 1/2 ton LWB project - 1982 GMC 6.2 diesel engine/suspension donor - 1966 Chevy 3/4 ton frame/doors/fenders donor - tons of parts - cause you can't build a truck without 4 of everything! 2001 3/4HD Duramax Diesel extended cab lwb4x4 1984 Chevy C30 6.2 diesel lift truck (project) 1962 GMC w/5 lugs, 350/350 auto (was for parts, but couldn't bring myself to do it!) glascock.m@hotmail.com

12-13-2011, 01:29 AM	#5
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,250	Re: 1966 Burb floor/firewall replacment questions I have read that the front roof area of the Suburbans has a different crown than the pickups do. If you cut and weld in the A pillars, that should be fine. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

12-13-2011, 07:11 AM	#6
gostranger 65 suburban vortec 5.3 bagged Join Date: Jun 2005 Location: upstate new york Posts: 1,317	Re: 1966 Burb floor/firewall replacment questions I cant wait to see pics of the suburban glad to hear you got one and are going to save it! Posted via Mobile Device

12-18-2011, 02:46 PM	#7
GMCMG Registered User Join Date: Nov 2009 Location: Center, MO Posts: 121	Re: 1966 Burb floor/firewall replacment questions Sorry it took so long; here are pics as promised! Some good and some bad. The front is not as bad as I remembered, and the back is a little worse than I remembered. All told, I'm very happy with its condition for a Missouri burb. Attached Images __________________ GMCMG 1964 GMC 1/2 ton LWB project - 1982 GMC 6.2 diesel engine/suspension donor - 1966 Chevy 3/4 ton frame/doors/fenders donor - tons of parts - cause you can't build a truck without 4 of everything! 2001 3/4HD Duramax Diesel extended cab lwb4x4 1984 Chevy C30 6.2 diesel lift truck (project) 1962 GMC w/5 lugs, 350/350 auto (was for parts, but couldn't bring myself to do it!) glascock.m@hotmail.com

12-18-2011, 02:53 PM	#8
GMCMG Registered User Join Date: Nov 2009 Location: Center, MO Posts: 121	Re: 1966 Burb floor/firewall replacment questions More pics... Attached Images __________________ GMCMG 1964 GMC 1/2 ton LWB project - 1982 GMC 6.2 diesel engine/suspension donor - 1966 Chevy 3/4 ton frame/doors/fenders donor - tons of parts - cause you can't build a truck without 4 of everything! 2001 3/4HD Duramax Diesel extended cab lwb4x4 1984 Chevy C30 6.2 diesel lift truck (project) 1962 GMC w/5 lugs, 350/350 auto (was for parts, but couldn't bring myself to do it!) glascock.m@hotmail.com

12-18-2011, 02:59 PM	#9
GMCMG Registered User Join Date: Nov 2009 Location: Center, MO Posts: 121	Re: 1966 Burb floor/firewall replacment questions and more... Attached Images __________________ GMCMG 1964 GMC 1/2 ton LWB project - 1982 GMC 6.2 diesel engine/suspension donor - 1966 Chevy 3/4 ton frame/doors/fenders donor - tons of parts - cause you can't build a truck without 4 of everything! 2001 3/4HD Duramax Diesel extended cab lwb4x4 1984 Chevy C30 6.2 diesel lift truck (project) 1962 GMC w/5 lugs, 350/350 auto (was for parts, but couldn't bring myself to do it!) glascock.m@hotmail.com

12-18-2011, 03:02 PM	#10
GMCMG Registered User Join Date: Nov 2009 Location: Center, MO Posts: 121	Re: 1966 Burb floor/firewall replacment questions last couple... The roof has four spots like this where there used to be a roof rack. Wish they had sealed it before it ruined the headliner. And, a little corner ding that ought to be fun. Attached Images __________________ GMCMG 1964 GMC 1/2 ton LWB project - 1982 GMC 6.2 diesel engine/suspension donor - 1966 Chevy 3/4 ton frame/doors/fenders donor - tons of parts - cause you can't build a truck without 4 of everything! 2001 3/4HD Duramax Diesel extended cab lwb4x4 1984 Chevy C30 6.2 diesel lift truck (project) 1962 GMC w/5 lugs, 350/350 auto (was for parts, but couldn't bring myself to do it!) glascock.m@hotmail.com

12-18-2011, 08:57 PM	#13
Crazy Rusty Registered User Join Date: Jul 2011 Location: Tacoma, WA Posts: 176	Re: 1966 Burb floor/firewall replacment questions I got a bunch of patches from LMC, and it worked really well. The welding was pretty easy, just a million spot welds. All parts fit except that passenger side because of the step. The replacement patch isnt flat since it doesnt have that suburban step area but all you have to do is cut the patch a bit and work the pieces around to fit correctly. I'll take some pics tomorrow. __________________ 1965 C10 Longbed Stepside 1969 Chevelle Malibu 1962 C20 Fleetside - Build Thread (Sold before I could finish)

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