For 260:
Width at outside 15/32 in.
Outside length 49.5 in.
Depth .30/.40
Angle of "V" 36 degrees
Tension New 100/140 lb
Tension Used 80/110 lb. (equivalent to 1/2 inch total up and down movement)
For 289: As above except outside length 47.25 in.
Source: Rootes Manual WSM.143/144 1st Re-issue General Data Section Page 15.
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