BB heater box

[bkhpah]

I agree with that Brandon.. I see no difference other than vent style. But a big block box will only house a B/B heater core. The inside dimensions are different..BKH

[Schonyenko2]

Like Brian said there is about a 1/4 difference in the heater core area, vrs A small block. I believe he has a picture posted somewhere showing the difference.

[YENKO DEUCE REGISTRY]

The 1/4" diff is correct. I believe the current BB heater cores are 1/4" smaller to fit into the SB boxes??? Yes / No??

I just removed the heater core from Benjamin's car to check the date code - it's original, still had some nice green anti-freeze in it!

[enio45]

There is a picture of this difference on this site under the super car workshop section - i saw it several weeks ago trolling for other info....if i can find it again ill post it.

[enio45]

Here is the link....half was down the page open the attachment

https://www.yenko.net/ubbthreads/show...0/fpart/4/vc/1

[Tommy]

I had some old part numbers for BB heater cores and there were some differences in numbers and measurements between Camaro and Nova. I think the 67-68 camaro and 68 Nova used the same one and the 69 camaro and 69-70 Nova shared the other. I believe one is just a little bigger than the other.

Tommy

[Unreal]

What about the inside box for an AC car? Are s/b and b/b different? I used a b/b suitcase with a s/b inside box as I thought they were the same. I bought what I thought was a b/b heater core, and I know everything fit.

[nuch_ss396]

The CRG also has a very informative topic on BB vs. SB heater boxes and components.

Nuch

[enio45]

Nuch - if you have the link, can you post it pls....i find it very difficult to navigate the CRG site finding info.....thanks alot

[nuch_ss396]

Ed,

Damned if I can find it now! I'll keep looking.

Steve