Ls Connecting Rod Torque

The rod bolts should continue to be tightened using twopasses advertisementclick here to read moreadvertisement the new specification calls for the second pass value to be increased from 75 to 85.

Ls connecting rod torque.

The procedures described in this step apply to engines using gm connecting rods and rod bolts only. Connecting rod bolts first design first pass 15 lb ft. Connecting rod bolts first pass 20y 15lbft connecting rod bolts final pass 85degrees coolant air bleed pipe and cover bolts 12y 106lbin coolant temperature sensor 20y 15lbft crankshaft balancer bolt installation pass to ensure the balancer is completely installed 330y 240lbft crankshaft balancer bolt first pass install a new. Coolant temperature gauge sensor.

Tighten connecting rod bolts torque fasteners note. Connecting rod bolts second design first pass 15 lb ft. I made a mistake last time and said torque your mains to 45ft lbs and 55ft lbs respectively. Connecting rod bolts first pass 20 nm 15 lb ft connecting rod bolts final pass 85 degrees coolant temperature gauge sensor 20 nm 15 lb ft crankshaft balancer bolt installation pass to ensure the balancer is completely installed 330 nm 240 lb ft.

From a mathematical standpoint a couple thousandths of an inch of rod length doesn t impact the ratio much at all. For example most ls small blocks that have a 3 622 inch stroke use a 6 098 inch connecting rod and this equates to a rod to stroke ratio of 1 68 1. Connecting rod used in 2005 2007 ls2 and 2008 2012 ls3 engines has bronze bushing. The new small block is known as the ls engine family and has more than successfully replaced 350 s and 305 s that were based in design from the 1950 s.

If you lost the connecting rod instruction sheet below are the proper torque specs for our rod bolts. I didn t sit well with me. Replacing the old tried and true small block chevy engine with a new version would not be an easy task. If using aftermarket rods or bolts follow the tightening procedure specified by the manufacturer and read utilizing fastener stretch below for more information.