B Model Truck Production
Model Years Quantity Chassis Version
B13 64-65 124 P, RP
B20 53-60 1,113 P
B23 63-65 131 P, RP
B30 53-65 4,115 P, PC, S, T, X
B31 53-60 177 P, T
B33 55-65 437 P, RP, T
B331 63-64 113 P
B332 63 1 P
B334 63-64 5 P
B37 62 1 X
B41 53-54 220 S, X
B42 53-65 19,729 P, PC, X, S, SX, T, LT, ST, TPB
B421 54-65 2,144 P, S, SX, T
B422 60-65 923 P, S, T, X
B4226 61-64 14 SX
B424 61-65 14 X
B426 58-66 221 S, SX
B428 61-62 10 S
B43 54-65 1,841 S, RS, X, RX, XE, LT
B44 55-58 76 T, TPB
B45 64-65 142 S, X
B46 58-65 473 P, S, T
B462 60-65 110 P, S, T
B4626 60 1 S
B47 64-65 437 P, S, RS, X
B473 56-62 128 S, X
B50 53-55 233 T
B53 62-66 2,625 S, SE, STE, RSE
B57 64-66 281 S
B576 65-66 26 S
B60 53-63 6,357 P, S, SX, ST, LT, THS, TM, X
B61 53-66 47,459 P, S, SE, RS, RSE, T, ST, LT,
LST, RT, RST, X, SX, RSX
B613 55-66 4,810 P, S, SE, T, LT, ST, LST, X, SX
B615 62-66 575 S, SX, RS, RSX, T, RT, LT, ST,
LST
B62 54-58 1,463 SX
B63 54-58 2,028 SXC, SXM
B633 56-58 486 SX
B64 54-57 119 T, LT
B65 55-58 1,623 T, LT, ST, LST
B653 55-58 93 T, LT
B655 55 10 ST
B66 58-65 177 S, T, ST
B67 57-65 8,780 T, LT, S, ST, LST
B673 58-65 176 T, LT, ST, LST
B68 60-66 1,503 P, T, LT, S, ST, X, SX
B70 53-66 1,073 P, T, LT, ST, LST
B71 53-58 522 T, S, ST
B72 56-65 98 T, LT, S, LS, LST
B73 55-66 2,520 T, LT, TM, S, LS, LST
B733 55-66 720 T, LT, S, LS, LST
B75 55-66 1,619 T, LT, S, LS, ST, LST
B753 55-66 1,825 T, LT, S, LS, LST
B755 63-66 456 T, LT, S, LS, ST, LST
B77 58-64 113 T, LT, S, LS, LST
B773 57-66 264 T, LT, S, LS, LST
B79 61 10 LST
B80 56-65 368 X, SX
B81 55-66 2,626 X, SX
B813 56-66 969 X, SX, RSX
B8136 57-66 85 SX
B815 63-66 220 X, SX, ST
B83 56-66 1,164 T, TM, S, ST, X, SX, RSX, EWX
B833 56-66 216 X, SX, RSX, ST
B85 56-64 77 T, ST, SX
B853 56-65 29 SX
B86 57, 59 5 SX
B87 56-64 75 ST, SX
B873 56-66 167 ST, SX, RSX
126,745 total
B Model Fire Truck Production
Model Years Quantity Chassis Version
B20 58 1 F
B21 57 9 F
B405 55-58 9 CF
B475 56-58, 61 42 CF
B505 54-58, 64, 66 48 F, FSW
B75 54-63 54 F
B795 56 1 F
B85 54-66 455 F, FA, FC, FCD, FD, FT, FSW
B95 54-66 236 F, FD, FMD
B125 54-58, 60, 63-66 53 F, FC
908 Total
B Model School Bus Production
Model Years Quantity Chassis Version
B30 55-59, 61, 62 33 B
B33 65 10 B
B34 53-61 376 B, BD
B35 54 10 B
B43 59, 61, 63-65 171 B
600 Total
128,253 total B Model Production
Chassis Versions
What do all the letters mean?
B – school bus chassis
C - flat face cowl for the addition of a delivery body
E - built for export
F - fire truck chassis
L - light weight or weight reduced by using aluminum components
P - platform chassis (single axle straight truck)
R - right hand drive. This designation was started in 1964 but right hand drive available
prior as option.
S - six wheel chassis (tandem axle)
T - tractor chassis
X - severe or extreme service chassis
Combine any of the basic letters to get a different chassis
PC – flat face cowl platform chassis
LST – light weight six wheel tractor chassis
SX - six wheel extreme service chassis
STE – six wheel tractor chassis for export
RX - right hand drive extreme service chassis
These are some odd versions
BD – school bus no idea what the D means. Little more than 100 built 19551956
EWX – don’t have a clue on the letters but the picture shows a mean looking B83
built in 1965 with 3 drive axles
SXC – six wheel extreme service chassis, may have been built in Canada
SXM – six wheel extreme service chassis, no idea what M stands for
THS – tractor, don’t know about HS
TM – tractor, don’t know about M
TPB – tractor piggy back
Now the fire truck combinations! The good guys at the Mack Museum and Harvey
Eckart had to do some “head scratchin” on these
CF – fire truck with Chrysler Corp. drive train
FA - aerial ladder fire truck
FC – fire truck chassis without fire body. This designation started in 1965
FCD – fire truck chassis with diesel engine without fire body
FD – fire truck with diesel engine. This designation started in 1964
FMD – don’t have a clue. Only built in 1963
FSW – six wheel (tandem axle) fire truck. This designation started in 1958 for
fire trucks but had been used in trucks prior to the B model series.
FT – fire truck tractor. This designation started in 1965 but fire truck tractors were also
built before this date but had been used in trucks prior to the B model series.
FT – fire truck tractor. This designation started in 1965 but fire truck tractors were also
built before this date.
Download a copy of the B-Model Production Numbers from the link below.
