Outside of the year truck they came in can someone tell me what the diffrence is between a BW 1345 and a BW1356 transfercase is?
THX Leadmic

 

This is what I found on several sites doing a google search. Is the differance that the 1356 is electric shift?

BORG-WARNER 1345
Type: Chain-driven, aluminum
Low-range ratio: 2.72:1
Lubricant: ATF
Length: (in.): 17.25
Width (in.): 23.0
Height: (in.): 12.0
Used by: Some 1980-to-88 full-size Fords. Holds six pints of Dextron II ATF. This unit can be towed extended distances
because of its built-in pump that channels oil to all necessary bearings

BORG-WARNER 1356
Type: Chain-driven, magnesium case
Used by: Recent-model Heavy-Duty Fords; replaced B-W model 1345.