1968 Big Block trucks - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**burb71** · 07-01-2010, 07:47 PM

Any of you guys out there that have factory original Big Block trucks, please tell me if your truck had the exhaust heat sheild under the hood, the one that mounts down low on the pass side fire wall/floor board.

My truck is an original 1968 BB truck and it does not have it, did the first year "1968" bb trucks have this, or did it come on the later years only.

**70cst** · 07-01-2010, 09:05 PM

Quote:

Originally Posted by burb71

Any of you guys out there that have factory original Big Block trucks, please tell me if your truck had the exhaust heat sheild under the hood, the one that mounts down low on the pass side fire wall/floor board.

My truck is an original 1968 BB truck and it does not have it, did the first year "1968" bb trucks have this, or did it come on the later years only.

I might be wrong and most likely I am...but I think it was 1971 when the Heat Shields were used. I think it was to protect the starter from getting to hot.

bglad420 · 07-01-2010, 09:06 PM

I have a 70 GMC 402 BB original and I dont remember seeing one on my rig when I did the tear down. But the PO may have removed it.

**Arrington01** · 07-01-2010, 09:29 PM

I have a 70 bbc with heat shield there. Thanks Jason

**70cst** · 07-01-2010, 10:01 PM

My 70cst is a numbers matching BB and it doesn't have a heat shield. Although it might have been removed at some time in its former life.

**burb71** · 07-02-2010, 03:10 AM

Quote:

Originally Posted by 70cst

My 70cst is a numbers matching BB and it doesn't have a heat shield. Although it might have been removed at some time in its former life.

Hey, thanks you guys for the quick response.
But now, If the heat sheild had been removed by someone, there will still be the 2 holes there where it had been mounted or at lest the 2 screws in the holes.
My truck does not even have the holes, I think that 70cst may be right about it starting in 1971.
Both my 1971 & my 1972 BB trucks had the sheilds

**burb71** · 07-02-2010, 03:17 AM

Quote:

Originally Posted by Arrington01

I have a 70 bbc with heat shield there. Thanks Jason

Sorry, I over looked your post, Jason
Is your truck a factory original BB truck?

tim21391 · 07-02-2010, 03:26 AM

i thought big blocks didnt come out til like 71 or 72

GASoline71 · 07-02-2010, 09:41 AM

The 396 was earlier than 71-72.

Gary

bglad420 · 07-02-2010, 10:26 AM

My 70 has a 402.

**kwmech** · 07-02-2010, 11:00 AM

both my 68 big blocks don't have the shield. My GMC had headers when I bought it from the PO. My chevy had a small block where the big block previously was.

**70cst** · 07-02-2010, 11:14 AM

Quote:

Originally Posted by tim21391

i thought big blocks didnt come out til like 71 or 72

I think in 69 one could get the 396. Then is 70 it went from a 396 to a 402. I think.

**burb71** · 07-02-2010, 11:55 AM

The first year for Big Blocks in our trucks was 1968 the engine was the 396,
in 1970 it was bored out to 402.
1973 was the first year for the 454 in light duty trucks

1-PU70 · 07-02-2010, 11:55 AM

My 70 has dimpls for drilling holes in the correct spot.

junkyardjohn · 07-02-2010, 12:11 PM

Quote:

Originally Posted by burb71

Any of you guys out there that have factory original Big Block trucks, please tell me if your truck had the exhaust heat sheild under the hood, the one that mounts down low on the pass side fire wall/floor board.

My truck is an original 1968 BB truck and it does not have it, did the first year "1968" bb trucks have this, or did it come on the later years only.

I KNOW I HAVE A BB HEAT SHEILD SOMEWHERE IN MY SHOP. IF YOU NEED ONE.. P.M. ME YOU'RE MAILING ADDRESS & I'LL SHIP IT TO YOU WHEN I COME ACROSS IT.

JOHN

**70cst** · 07-02-2010, 01:06 PM

Quote:

Originally Posted by burb71

The first year for Big Blocks in our trucks was 1968 the engine was the 396,
in 1970 it was bored out to 402.
1973 was the first year for the 454 in light duty trucks

Spot on...I wasn't sure if it was 68 or 69.

**burb71** · 07-02-2010, 01:25 PM

Quote:

Originally Posted by junkyardjohn

I KNOW I HAVE A BB HEAT SHEILD SOMEWHERE IN MY SHOP. IF YOU NEED ONE.. P.M. ME YOU'RE MAILING ADDRESS & I'LL SHIP IT TO YOU WHEN I COME ACROSS IT.

JOHN

Thanks again john,
I have one I just dont want to install it if it's not factory correct for 1968.
I want my restoration as close to original as can be.

**70cst** · 07-02-2010, 01:42 PM

Quote:

Originally Posted by burb71

Thanks again john,
I have one I just dont want to install it if it's not factory correct for 1968.
I want my restoration as close to original as can be.

That's the direction that I am going except I did up grade to disc brakes for driveability issues. I added am/fm which wasn't avaliable until 71 I believe. I also added a tillt. Otherwise it is fairly close to stock. Oh yes...I changed the shoes to TT II's.

**Arrington01** · 07-02-2010, 03:26 PM

Burb 71,

Yes this is a complete original 70 bbc swb truck, still original paint truck. When i bought it, it was last tagged in 81.

**70cst** · 07-02-2010, 03:44 PM

Quote:

Originally Posted by arrington01

burb 71,

yes this is a complete original 70 bbc swb truck, still original paint truck. When i bought it, it was last tagged in 81.

wow

07-01-2010, 07:47 PM	#1
burb71 Active Member Join Date: Oct 2002 Location: Ft. Myers, Fl Posts: 1,714	1968 Big Block trucks Any of you guys out there that have factory original Big Block trucks, please tell me if your truck had the exhaust heat sheild under the hood, the one that mounts down low on the pass side fire wall/floor board. My truck is an original 1968 BB truck and it does not have it, did the first year "1968" bb trucks have this, or did it come on the later years only. Last edited by burb71; 07-01-2010 at 07:47 PM.

07-01-2010, 09:06 PM	#3
bglad420 Registered User Join Date: Dec 2005 Location: Bellingham, WA Posts: 167	Re: 1968 Big Block trucks I have a 70 GMC 402 BB original and I dont remember seeing one on my rig when I did the tear down. But the PO may have removed it. __________________ 70 GMC LWB Fleetside, 402BB, TH400 90K original only cost $50.

07-01-2010, 09:29 PM	#4
Arrington01 Senior Member Join Date: Feb 2008 Location: Texas Posts: 1,013	Re: 1968 Big Block trucks I have a 70 bbc with heat shield there. Thanks Jason

07-01-2010, 10:01 PM	#5
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,365	Re: 1968 Big Block trucks My 70cst is a numbers matching BB and it doesn't have a heat shield. Although it might have been removed at some time in its former life. __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder! Last edited by 70cst; 07-01-2010 at 10:01 PM.

07-02-2010, 03:26 AM	#8
tim21391 Registered User Join Date: Jul 2007 Location: Salina, Kansas Posts: 1,998	Re: 1968 Big Block trucks i thought big blocks didnt come out til like 71 or 72 __________________ 1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796

07-02-2010, 10:26 AM	#10
bglad420 Registered User Join Date: Dec 2005 Location: Bellingham, WA Posts: 167	Re: 1968 Big Block trucks My 70 has a 402. __________________ 70 GMC LWB Fleetside, 402BB, TH400 90K original only cost $50.

07-02-2010, 11:00 AM	#11
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,420	Re: 1968 Big Block trucks both my 68 big blocks don't have the shield. My GMC had headers when I bought it from the PO. My chevy had a small block where the big block previously was.

07-02-2010, 11:55 AM	#13
burb71 Active Member Join Date: Oct 2002 Location: Ft. Myers, Fl Posts: 1,714	Re: 1968 Big Block trucks The first year for Big Blocks in our trucks was 1968 the engine was the 396, in 1970 it was bored out to 402. 1973 was the first year for the 454 in light duty trucks

07-02-2010, 11:55 AM	#14
1-PU70 Registered User Join Date: Apr 2000 Location: Bradenton, FL Posts: 1,036	Re: 1968 Big Block trucks My 70 has dimpls for drilling holes in the correct spot. __________________ 1970 CST/10 402,700R4,3:73 posi,AC,PS,PB,TLT,PW,Buckets with heaters

07-02-2010, 03:26 PM	#19
Arrington01 Senior Member Join Date: Feb 2008 Location: Texas Posts: 1,013	Re: 1968 Big Block trucks Burb 71, Yes this is a complete original 70 bbc swb truck, still original paint truck. When i bought it, it was last tagged in 81.



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