1p crank as compared to 2pc crank seal
Oil pan rails and seal radius different (Gen5/6 same)
Gen 6 had tall lifter bores and designed for hyd roller cam
Gen 6 has no fuel pump boss
Gen 6 will take up to 4.750" stroke
Gen 6 blind tapped cylinder head bolt holes
Gen 6 takes a stepped cam with cam retaining plate
Gen 6 will accept Mark 4 heads with special head gaskets
Gen 6 heads had metric bolt down rockers
Gen 6 had priority main oiling
Oil pan rails and seal radius different (Gen5/6 same)
Gen 6 had tall lifter bores and designed for hyd roller cam
Gen 6 has no fuel pump boss
Gen 6 will take up to 4.750" stroke
Gen 6 blind tapped cylinder head bolt holes
Gen 6 takes a stepped cam with cam retaining plate
Gen 6 will accept Mark 4 heads with special head gaskets
Gen 6 heads had metric bolt down rockers
Gen 6 had priority main oiling
