Product details:

Stage 8 Locking Fasteners 8928: Bolts, Intake Manifold, Steel, Nickel Plated, 12-Point Head, Ford, Small Block, 351W, 351M, 400, Kit - Stage 8 locking intake manifold bolts are designed to stay put once they're tightened down. They are reusable, can be visually inspected, and install easily with no special tools. Stage 8 Locking Fasteners. 8928 fits these applications: FORD 6.6L/400 Ford Modified, FORD 5.8L/351 Ford Cleveland, FORD 5.8L/351 Ford Modified, FORD 5.8L/351 Ford small block Windsor, FORD 5.0L/302 Ford small block Windsor, FORD 4.7L/289 Ford small block Windsor, FORD 4.3L/260 Ford small block Windsor, FORD 4.2L/255 Ford small block Windsor, FORD 3.6L/221 Ford small block Windsor.