
All B-RB heads are interchangeable.
CID - bore x str
lo block
361 - 4.14 x 3.38
383 - 4.25 x 3.38
400 - 4.34 x 3.38
reg block
413 - 4.18 x 3.75
426 - 4.25 x 3.75
440 - 4.32 x 3.75
source: Mopar Engines
Scott Monfort wrote:
> Does anyone know what the bore sizes for a 383 and 413 are? I'm wanting to
> swap 906 heads on to the 413, and I'm wondering if there'll be any
interference
> problems.
>
> Scott Monfort
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