The Mahle MS single piston for SBC 427ci is specified for a 4.125in bore, 4.000in stroke and 6.000in rod, with a 0.927in pin and a -5.0cc dish yielding about 12.2:1 compression ratio per the description. Packaged as a single piston, the listing provides the core dimensions needed for engine builders to verify compatibility with their SBC 427ci assemblies before ordering.
Mahle MS Piston SBC 427ci 4.125in Bore 4.000in Stroke 6.0in Rod .927 Pin -5cc 12.2 CR - Single