The ARP rod bolts are torqued to 63 ft-lb in three steps. The crankshaft is a 4340 forging from Probe. The internally balanced crank has a 3.750-inch stroke and 2.100-inch rod journals (same as small-block Chevy). Note the four-bolt main caps. These were factory on R-code 4V engines, but all Cleveland blocks and caps can be drilled for a four-bolt conversion.