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12-16 Edition 47
On-Highway Trucks
Frame Selection
FRAME SELECTION GUIDE
FOR CT680 AND CT681
Based on Front Axle Load, Desired GVWR and
Wheelbase: Select a Frame from table below. Frame
length varies in roughly two inch increments to accom-
modate many different body sizes. Frames can also be
Reinforced (or Doubled) to carry heavier loads.
Dimensions
Code
Front
Axles GVWR
Maximum Wheelbase
200 210 220 230 240 250 260 270 280 290 300 310 320 330 340 350 360
12.25 × 3.375
× 0.375
01CDH
12K <=52K
299" (7600 mm)
13.2K <=53.2K
274" (6950 mm)
14K <=60K
258" (6550 mm)
16K <=62K
258" (6550 mm)
18K <=64K
254" (6450 mm)
20K <=66K
254" (6450 mm)
20K <=85K
205" (5200 mm)
12.0 × 3.25
× 0.25
with 0.25
Outer
Reinforcement
01DAV
01GDL
12K <=52K
360" (9150 mm)
13.2K <=53.2K
337" (8550 mm)
14K <=60K
329" (8350 mm)
16K <=62K
299" (7600 mm)
18K <=64K
283" (7200 mm)
20K <=66K
283" (7200 mm)
20K <=85K
270" (6850 mm)
12.25 × 3.375
× 0.375
with 0.312
Outer
Reinforcement
01CDH
01GDM
12K <=52K
360" (9150 mm)
13.2K <=53.2K
360" (9150 mm)
14K <=60K
360" (9150 mm)
16K <=62K
348" (8850 mm)
18K <=64K
339" (8600 mm)
20K <=66K
319" (8100 mm)
20K <=85K
295" (7500 mm)