Difference between EAB and EABB heads

C

cars2cool

Senior Member
I just bought some heads I found on marketplace and discovered a pair of EABB heads in the collection. What is the difference between them and EAB heads?
 
Most EAB heads that I have seen also have a "D" or other letter near the EAB marking. All EAB heads I have seen had the same combustion chambers.
 
Think I got it, thank you for the help.
 

Attachments

  • IMG_20250522_125531017_BURST000_COVER.jpg
    IMG_20250522_125531017_BURST000_COVER.jpg
    46.2 KB · Views: 102
Last edited:
The extra "B" looks a little weird. "cars2cool", did you take these pictures yourself or get them from some other source?
 
Took these pics myself, put a little saliva on my thumb and rubbed it over the casting to get the letter details to pop up better.
 
To me it looks like they used the EAB pattern, then modified something and added the -B at a later date. Possibly at the foundry
 
Yes I can take some more pics tomorrow and put them up here then. Might not be able to see much detail as they are pretty corroded.
 
Here are a few more pictures of the cylinder heads I purchased the other day. Left picture is the pair of EAB-B heads. Middle picture is the underside of a EAB and 8BA head. Third picture that didn't focus is the top side of the EAB and 8BA heads.
 

Attachments

  • IMG_20250531_132152952_BURST001.jpg
    IMG_20250531_132152952_BURST001.jpg
    58.7 KB · Views: 167
  • IMG_20250531_132628748_BURST000_COVER.jpg
    IMG_20250531_132628748_BURST000_COVER.jpg
    62.1 KB · Views: 168
  • IMG_20250531_132737058_BURST000_COVER.jpg
    IMG_20250531_132737058_BURST000_COVER.jpg
    96.2 KB · Views: 159
cars2cool said:
Here are a few more pictures of the cylinder heads I purchased the other day. Left picture is the pair of EAB-B heads. Middle picture is the underside of a EAB and 8BA head. Third picture that didn't focus is the top side of the EAB and 8BA heads.
Click to expand...
EAB-B heads
567456


Middle picture is the underside of a EAB and 8BA head
567457


Third picture that didn't focus is the top side of the EAB and 8BA heads.
567458
 
It looks like a larger transfer area in the EAB-B pictures. Maybe a lower C.R. also.
 
You must log in or register to reply here.
Back
Top