BB heat shield - The 1947 - Present Chevrolet & GMC Truck Message Board Network

gregbr · 09-24-2005, 04:51 PM

Can someone supply a picture or tell me exactly where the BB exhaust heat shield on the floorboard is located? I have an original BB 70 GMC and have not seen it yet, I thought it was on the bottom of the firewall, but I'm not sure. Haven't looked under the bottom yet (not for this anyway). Just want to make sure it's there, or if I need to find one for later. Thanks

Swbman · 09-24-2005, 06:15 PM

not very clear picture.but there are 2 bolts that hold it to the lower firewall, just behind where the exhaust manifold and the exhaust pipe attaches.

RPOZ11 · 09-24-2005, 07:36 PM

Here is where the 1972 cab holes are:

RPOZ11 · 09-24-2005, 07:37 PM

Here is the 1972 bracket:

gregbr · 09-25-2005, 05:56 AM

Is this on ALL factory BB's (Chevy & GMC)? My 70 2wd GMC is a factory BB, but I don't see the plate there. Of course this truck stays in the shed mostly, I'll have to study it closely Monday while I'm off. Greg

demi · 09-25-2005, 12:57 PM

I believe that the heat shield was only on the 71 - 72 BB. My 69 is also a factory BB truck and it has no holes like those shown on the above pic.

cheyenne10 · 09-25-2005, 01:42 PM

Do all cabs have the proper holes or dimples for them from factory for proper location?

gregbr · 09-27-2005, 06:33 AM

I don't have the shield on my 70 GMC BB. Have seen it posted hear before that there are dimples in the floor where the shiled goes, but I've never looked. Greg

68 50th · 09-27-2005, 06:53 AM

Here are some pics of the heat shield in my 71 BB.

09-24-2005, 04:51 PM	#1
gregbr Senoir Member Join Date: Mar 2002 Location: Rock Hill, SC USA Posts: 1,214	BB heat shield Can someone supply a picture or tell me exactly where the BB exhaust heat shield on the floorboard is located? I have an original BB 70 GMC and have not seen it yet, I thought it was on the bottom of the firewall, but I'm not sure. Haven't looked under the bottom yet (not for this anyway). Just want to make sure it's there, or if I need to find one for later. Thanks __________________ 67 Chevy, Small back glass, Factory 4WD, Factory Shortbed, Factory V8, Lifted 4" 70 GMC Sierra Grande, Factory Shortbed, Factory 402/400 turbo, Super Custom Interior. Numbers matching with SPID & Build Sheet. 68K Original Miles. Restored 2010 70 GMC Restoration Pictures http://67-72chevytrucks.com/gallery/...00&ppuser=4424

09-24-2005, 06:15 PM	#2
Swbman Senior Member Join Date: Mar 2004 Location: Tulsa,Oklahoma Posts: 606	not very clear picture.but there are 2 bolts that hold it to the lower firewall, just behind where the exhaust manifold and the exhaust pipe attaches. Attached Images __________________ 1961 BUICK LESABRE 1968 CHEVELLE SS 396 1969 BUICK RIVIERA GS 1971 2 WHEEL DRIVE BLAZER 1971 4X4 BLAZER 1971 SHORTBED CHEYENNE FLEETSIDE 1971 SHORTBED 4X4 FLEETSIDE ** ...My Ebay

09-24-2005, 07:36 PM	#3
RPOZ11 72 BB C30 Super LongHorn Join Date: Nov 2002 Location: Chavez Ravine Posts: 1,606	Cab Holes Here is where the 1972 cab holes are: Attached Images __________________ 72 BB C/30 Longhorn Super HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM HO72 build : http://67-72chevytrucks.com/vboard/s...d.php?t=714492 2017 SS Last edited by RPOZ11; 09-25-2005 at 12:59 PM.

09-24-2005, 07:37 PM	#4
RPOZ11 72 BB C30 Super LongHorn Join Date: Nov 2002 Location: Chavez Ravine Posts: 1,606	Exhaust Bracket Here is the 1972 bracket: Attached Images __________________ 72 BB C/30 Longhorn Super HO72 No-Spin, #'s matching, Tilt, Tach, AC, AM/FM HO72 build : http://67-72chevytrucks.com/vboard/s...d.php?t=714492 2017 SS Last edited by RPOZ11; 09-25-2005 at 12:59 PM.

09-25-2005, 05:56 AM	#5
gregbr Senoir Member Join Date: Mar 2002 Location: Rock Hill, SC USA Posts: 1,214	Is this on ALL factory BB's (Chevy & GMC)? My 70 2wd GMC is a factory BB, but I don't see the plate there. Of course this truck stays in the shed mostly, I'll have to study it closely Monday while I'm off. Greg __________________ 67 Chevy, Small back glass, Factory 4WD, Factory Shortbed, Factory V8, Lifted 4" 70 GMC Sierra Grande, Factory Shortbed, Factory 402/400 turbo, Super Custom Interior. Numbers matching with SPID & Build Sheet. 68K Original Miles. Restored 2010 70 GMC Restoration Pictures http://67-72chevytrucks.com/gallery/...00&ppuser=4424 Last edited by gregbr; 09-25-2005 at 05:56 AM.

09-25-2005, 12:57 PM	#6
demi Registered User Join Date: Sep 2003 Location: Arizona Posts: 305	I believe that the heat shield was only on the 71 - 72 BB. My 69 is also a factory BB truck and it has no holes like those shown on the above pic.

09-25-2005, 01:42 PM	#7
cheyenne10 Senior Member Join Date: Apr 2000 Location: Oregon Posts: 2,512	cabs Do all cabs have the proper holes or dimples for them from factory for proper location? __________________ Bob

09-27-2005, 06:33 AM	#8
gregbr Senoir Member Join Date: Mar 2002 Location: Rock Hill, SC USA Posts: 1,214	I don't have the shield on my 70 GMC BB. Have seen it posted hear before that there are dimples in the floor where the shiled goes, but I've never looked. Greg __________________ 67 Chevy, Small back glass, Factory 4WD, Factory Shortbed, Factory V8, Lifted 4" 70 GMC Sierra Grande, Factory Shortbed, Factory 402/400 turbo, Super Custom Interior. Numbers matching with SPID & Build Sheet. 68K Original Miles. Restored 2010 70 GMC Restoration Pictures http://67-72chevytrucks.com/gallery/...00&ppuser=4424

09-27-2005, 06:53 AM	#9
68 50th Senior Member Join Date: Jul 2004 Location: Sweden Posts: 833	Here are some pics of the heat shield in my 71 BB. Attached Images __________________ Mats.. ---------------------------------------------------- 1971 Cheyenne Super Custom Camper 475CBB/TH400/AC 1992 Silverado Sport Truck 1988 Silverado 2500 Ext Longbed 4x4 2001 GMC Sierra SLT 4x4 1990 Chevrolet K3500 1965 Pontiac Grand Prix 1980 Z 28 350/4-speed/AC/T-top 1980 Camaro Coupe V6/3-speed 1979 Buick Century Wagon



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