This rugged LS-6/LS-7 connecting rod is forged from 4340 steel, Magnaflux inspected and shotpeened. It has heavy-duty 7/16" diameter rod bolts with knurled shanks (P/N 14096148). This rod is machined for pressed piston pins, and is color coded white. This is also the Gen. V 454 & 502 rod. Order P/N 12496661 for engine kit of eight rods. Technical Notes: All big-block Chevrolet connecting rods are 6.135" from center-to-center. Recommended bolt torque is 73 ft/lbs. Use production rod bearing P/N 12329715.