OptiTorque Header Stud - 3/8-16 and 3/8-24 in Thread - 1.670 in Long - Broached - Big Block Chevy (Set of 16) M77CB743HNDC10 Fits 2/4 wheel drive models

Fits 2/4 wheel drive models with 4 doors only

Red / Cadmium Plated

5/16-18 in Gauge Bolt to 13-24 in Wheel Rims

All dry sump pulleys aremade to accept a 5/8" shaft

OptiTorque Header Stud - 3/8-16 and 3/8-24 in Thread - 1.670 in Long - Broached - Big Block Chevy (Set of 16) M77CB743HNDC10 Fits 2/4 wheel drive modelsProduct Description: Header Stud 3 8 16 and 3 8 24 in Thread 1. 670 in Long Nuts Included Broached Steel Black Oxide Big Block Chevy Set of 16 OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.