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11. The rod/piston assemblies are fastened to the crankshaft with ARP bolts via the stretch method, which is a more accurate way of ensuring the proper pre-load and clamping force on them. Essentially, the bolts are stretched until they are within the sweet spot of elasticity. That's usually between 0.005-inch and 0.006-inch, which is right where the bolt shown here registered on the gauge.