After hauling some concrete manhole risers the other day with the new chevy 1500 long bed 5.3 v8, I decided to install add a leafs and new u-bolts for added pay load capacity, she was squatting pretty bad. Since I'm adding another leaf, thicker u-bolts (9/16" to 5/8"), do I need to torque the u-bolt nuts to the factory specs of 74 ft-lbs, or a higher spec? There were no directions with the add a leafs and the u-bolts I got were universal truck bolts.
After hauling some concrete manhole risers the other day with the new chevy 1500 long bed 5.3 v8, I decided to install add a leafs and new u-bolts for added pay load capacity, she was squatting pretty bad. Since I'm adding another leaf, thicker u-bolts (9/16" to 5/8"), do I need to torque the u-bolt nuts to the factory specs of 74 ft-lbs, or a higher spec? There were no directions with the add a leafs and the u-bolts I got were universal truck bolts.
http://www.summitracing.com/oh/parts/tfy-81350/overview/
http://www.summitracing.com/oh/parts/slf-11004/overview/