CRG Discussion Forum

Camaro Research Group Discussion => Originality => Topic started by: ko-lek-tor on August 15, 2017, 05:00:18 PM

Title: BB Heater Box vs. SB/6 Differences
Post by: ko-lek-tor on August 15, 2017, 05:00:18 PM

I recently had a chance to compare my BB heater box to a SB. I thought they were both the same and the only reason the BB box had a different part number was because of the hose cover or clips or heater core or the rubber hose hole cover. So, I tried putting the core from the BB in the SB box. It did not fit. After closer examination, I found the one thing that is different between the 2 type boxes. The BB welded in heater core plate is approximately 1/4 in. wider. I could probably make the SB work with a BB core, but I would have to modify, I.E. hammer, to make it fit. Below is what I found. I hope this helps someone ID their box in the future. Bottom box is the BB one.

Title: Re: BB Heater Box vs. SB/6 Differences
Post by: Spooky on August 18, 2017, 10:07:27 PM

Good info to know. Would you have measurements? I did not notice when I had mine out. Side by side would be noticeable.

Good job Bentley!

Scott

Title: Re: BB Heater Box vs. SB/6 Differences
Post by: jbtech on December 02, 2022, 03:27:57 AM

Bentley thank you for identifying that bb and sb heater boxes are not identical. I'd like to add a measurement from my 1967 SS 396 heater box. The flange is noticeably wider here than a sb heater box. Can anyone add a measurement from a sb box?

Title: Re: BB Heater Box vs. SB/6 Differences
Post by: Driveway_finds on December 23, 2022, 04:22:01 AM

I found this out the hard way!😂 I always look for the little bead roll inside the big block box to identify them!