Set of 16 including 16 poly locks. S/B Chevy 66907C 1.5 Ratio 3/8" stud . . . . .$ ... 8-1.5/8-1.6 3/8" stud . . .$149.99 B/B Chevy 66913C 1.7 Ratio 7/16" stud ... and either 3/8" or 7/16" poly locks. Chevy Small Block 66950 For use with 3/8" ... stock pushrods with welded tips (not cheap press fits), hardened for use with or ... black-oxide coated 1010 steel. Fits S/B Chevy pre-85. 66923C ... 59.99 Long Slot Rocker Arms S-1025 S/B Chevy 1.5 ratio, 3/8" stud . . . . . . . .$4. ... 99 ea S-1025SP S/B Chevy 1.6 ratio . . . . . . . . . . . . .$5. ... Steel Factory Replacement RK346X S/B Chevy 1.5 ratio, 3/8" stud . .$2.99 ea ... with adjusting nut 10750-16* S/B Chevy center bolt valve cover 1.50 ratio 3/8 ... 316.99 11750-16* S/B Chevy 1.50 ratio 3/8" stud . . . . . . . .$ ... 274.99 13750-16* B/B Chevy 1.70 ratio 7/16" stud . . . . . . .$284 ...