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Stud Girdle Adjusting Nut for 3/8" Stud w/ Snap Ring; With a 2.000" overall length, this adjusting nut is designed for 3/8" rockers with a stud girdle. Comes with a snap ring to hold girdle bar.

Stud Girdle Adjusting Nut for Big Block Chevrolet Intake w/ 7/16" Stud; With an overall length of 2.515", this stud girdle adjusting nut fits intake valves on Big Block Chevrolet.

Stud Girdle Adjusting Nut Set for Big Block Chevrolet Intake w/ 7/16" Stud; With an overall length of 2.515", this stud girdle adjusting nut set fits intake valves on Big Block Chevrolet.

Stud Girdle Adjusting Nut for Big Block Ford w/ 7/16" Stud; For Big Block Fords specifically, this 7/16" stud girdle adjusting nut is threaded through the full length.

Stud Girdle Adjusting Nut Set for Big Block Ford w/ 7/16" Stud; For Big Block Fords specifically, these 7/16" stud girdle adjusting nuts are threaded through the full length.