Installation Guide

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PAGE 9
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VEHICLE-SPECIFIC INSTALLATION
Front of truck
Row 1 Row 2 Row 3 Row 4
Rear edge of truck bed
Each base rail must have a bolt in
either of the marked holes. Check
for obstructions before drilling.
Rear edge of the truck bed to
the rear edge of the base rail.
34-7/8"
long and short box
Axle center
Bed sill
Short bracket
Long bracket
Mounting channel
* Optional weld pattern
Driver-side of 1/2-ton
Chevrolet shown
King pin center - approx.
3-1/2" forward of axle center
Do not torque to 85 lb-ft
(tighten but do not
crush bed sill)
Front of
vehicle
WARNING
Read pages 2 - 4 of this installation manual before beginning the
installation. Failure to do so could result in significant vehicle damage.
Check for obstructions prior to drilling. Failure to do so could result in
damaged fuel or brake lines, structural members, etc.
CURT does its best to communicate tow vehicle manufacturer
changes. However, it is ultimately the responsibility of the installer
to prevent damage due to installation.
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Chevrolet / GMC 4-door
73 - 87 / 73 - 92 (34" straight with inside shock absorbers)