Pioneer Rocker Arm Stud - 7/16-14 in Base Thread - 3/8-24 in Top Thread - 1.470 in Effective Stud Length - Small Block Chevy (Set of 16) Weld-On Bung and Cap 1/8 in NPT Female to

1/8 in NPT Female to 4 AN Male Bulkhead

TH350 Transmissions can reuse the factory transmission crossmember

500 in Head

22 in Port

Thermal durability has been improved with longer exhaust studs and spacers plus thicker

Pioneer Rocker Arm Stud - 7/16-14 in Base Thread - 3/8-24 in Top Thread - 1.470 in Effective Stud Length - Small Block Chevy (Set of 16) Weld-On Bung and Cap 1/8 in NPT Female toProduct Description: Rocker Arm Stud 7 16 14 in Base Thread 3 8 24 in Top Thread 1. 470 in Effective Stud Length Steel Small Block Chevy Set of 16 Since 1946, Pioneer has offered a broad mix of different automotive parts for a variety of applications, including motor mounts, fittings, cables, and even paints and engine storage bags.