Bellhousing identification.

[Roadman]

   While I've been looking around for a bellhousing for @torredcuda  I tripped over this casting # chart From Roseville.     Good info.   http://www.rosevillemoparts.com/reference_castingnumbers5.php

[Roadman]

    So according to the chart, for a 73 Bbody 400, 4 speed either a 2892511 or 2892513 would work. Am i correct in assuming the difference is the front bearing retainer diameter. ?

[Cuda Cody]

The 513 is a common big block bell.  I've got a few around here that I can check if needed.  Not sure on the 511 bearing diameter. 

[anlauto]

Same bellhousing 511 is the part number 513 is the casting number 

[torredcuda]

   While I've been looking around for a bellhousing for @torredcuda  I tripped over this casting # chart From Roseville.     Good info.   http://www.rosevillemoparts.com/reference_castingnumbers5.php

Ya, saw that also and wasn`t sure if there was a difference  or not.