B30-7/b30-7a/b30-7a1

[ECIRailfan]

I know the difference between the B30-7 and the B30-7A (16 cylinder vs 12 cylinder FDL prime mover), but what distinguished the B30-7A from the B30-7A1?

Thanks!

 

[NM_RailNut]

The B30-7A1 was built for the Southern Railway; other than the high hood, I don't believe there were any major differences between the two.

 

[kenw]

the 30-7A1 versions had the equipment blower opening (a large square grill opening about 10 ft behind the cab) moved from the 7A location at the other end of the long hood.

The last order of BN 30-7A (cabless B units) had this feature altho they weren't noted as A1.

culled from The Contemporary Diesel Spotters Guide.....