In the 1947-54 Chevrolet Truck Factory Assembly Manual
Section 2, Sheet 2.00 thru 2.03
Under "Frame Checking Instruction"

Looking at the frame side view it says 3° degrees, 42' 9", CL (center line) of Crankshaft.
3° degrees means engine pitch.
What does the numbers 42' 9" mean?
All models show the same numbers 42' 9" .
Check attached picture for reference.

xfiles
Attachments
frame checking numbers.jpg (107.56 KB, 179 downloads)

1954 Chevrolet 3105 Deluxe Panel Truck
w/Factory HYDRA-MATIC