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Author Topic: How to tell a BB firewall from a SB firewall in a 1968 Camaro  (Read 12799 times)

Emo1956

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How to tell a BB firewall from a SB firewall in a 1968 Camaro
« on: March 23, 2018, 06:32:41 PM »
HI, I am looking at a 1968 Camaro which he is claiming to be a big block car. I am looking at the firewall and what I don't know is,do all Camaros have the holes where small block heater core hoses come out from ? My 1968 SS big block car hoses come out from the middle of the heater box but I have never seen underneath what is there . Is there a difference ? Thanks everyone. I am trying to post a pic but I am still very new to the site. I posted a pic of where my hoses come out from . Any help is much appreciated . Thank you
« Last Edit: March 23, 2018, 07:00:32 PM by Bad ass Camaro »
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Mike S

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #1 on: March 23, 2018, 06:44:06 PM »
I can only comment on '67 BB's. I haven't seen any FW differences between SB and BB (heater core cover exception), but the motor mounts for BB's are different in that the motor is shifted over approximately 1" to the right. Plus, the transmission cross member was unique to the BB to accommodate the motor/transmission offset.  Again, this is for 67, but the '68 should be close, if not the same.

Mike
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67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

HawkX66

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #2 on: March 23, 2018, 06:48:36 PM »
I can tell you it had a Muncie transmission... It looks to have big block engine stands, but those are bolt ons. The heater box cut outs are the same BB to SB. It's just the cover that's different.
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Dave
69 SS396 X66 L34 M21 BS
Z23 711 U17 Hugger Orange
Semper Fi!

bcmiller

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #3 on: March 23, 2018, 07:00:51 PM »
Is any of the drivetrain original to the car?  What axle does it have and what is the code on the front edge of the passenger side axle tube?
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Bryon / 1968 Camaro SS 396 coupe - now old school 468 big block
1967 Camaro RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016

Emo1956

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #4 on: March 23, 2018, 07:08:08 PM »
There is no motor. It has a 12 bolt with 4 leafs. Its on Ebay auction.
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Emo1956

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #5 on: March 23, 2018, 07:10:26 PM »
So the firewall is the same . Its only the cover that is different between the big and small block . It looks to have the big fuel line too.
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cook_dw

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #6 on: March 23, 2018, 08:11:57 PM »
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VINCE Z28

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #7 on: March 23, 2018, 08:29:26 PM »
12 Bolt BT 0120G1
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" He who knows naught, knows not that he knows naught"  It's not you...  It's just the way my brain is wired.

WorkinProgress

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #8 on: March 23, 2018, 10:28:52 PM »
Car has a '70 up frame on it. The way you can tell is by the elongated hole on top of drivers front frame rail. The rearward of three holes is elongated as they went to the charcoal canister in '70 and that hole is for the vent hose.

                                                                  - Warren
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Emo1956

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #9 on: March 24, 2018, 02:02:40 AM »
I thought the sub frames were all the same 1967-69
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Emo1956

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #10 on: March 24, 2018, 02:05:34 AM »
Ya I notice that too. No cowl tag. He won't answer any questions. The car is a Cal. car .
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Emo1956

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #11 on: March 24, 2018, 05:13:21 AM »
Here are 3 sub frames for Camaros. 1 1967  2 1968  3 1969    That car doesn't have either 1 of these . Look at the holes in the front frame horns ...
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Emo1956

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #12 on: March 24, 2018, 05:14:04 AM »
1968 Subframe
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Emo1956

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #13 on: March 24, 2018, 05:16:58 AM »
1969 subframe
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bcmiller

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Re: How to tell a BB firewall from a SB firewall in a 1968 Camaro
« Reply #14 on: March 24, 2018, 05:58:43 AM »
Quote from: Bad ass Camaro on March 24, 2018, 02:05:34 AM
Ya I notice that too. No cowl tag. He won't answer any questions. The car is a Cal. car .

Says this right in his ad.  "I will be glad to answer any questions."

It would be impossible to say this is a 396/350 hp car with just the information and pics provided. 
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Bryon / 1968 Camaro SS 396 coupe - now old school 468 big block
1967 Camaro RS/SS 396 coupe L35/M40 - 4 generation family project
Looking for 68 Camaro with body # NOR 181016
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