Page 16 of Proform 2005 Factory Performance Parts by Proform Parts

Aluminum Stud Girdles Stud Girdles reduce flex and part breakage. Increased valvetrain rigidity helps minimize energy loss. Each set comes with aluminum stabilizers and poly locks. Two pieces per set. Fits Chevy small block. 66950 ..........For use with 3/8" stud 66951 ..........For use with 7/16" stud Fits Chevy big block. 66981 ..........For use with 7/16" stud Chevy Guide Plates Fits Chevrolet small block engines 5/16". Hardened. These precision stampings are carefully formed for exact fit. Each guide plate has been heat treated to increase the hardness and minimize wear. 8 pieces per package. 66880 ..........5/16" S/B, Flat 66881 ..........5/16" S/B, Raised 66895C.........3/8" B/B Screw-In 16-pc Rocker Stud Sets Fits Chevy S/B and Ford. 66870C.........3/8" Studs Fits Chevy S/B B/B. 66871C.........7/16" Studs Heavy-Duty Extruded Aluminum Roller-Rocker Arms Designed for up to 10,000 RPM. This heavy duty design features an oversized body and fulcrum with a triangulated profile for additional rigidity and strength. Accommodates most oversized valve springs. American-made roller bearings are in self-contained bearing-cups for extra low friction wear. Each set includes 16 extruded aluminum roller rockers and 16 poly locks. If you would like to order a single roller rocker, please use your applicable part number and add a "P" at the end (ie "67708P"). Fits Chevy small block engines. 66928 ..........1.5 Ratio, 3/8" Stud 66928C.........1.5 Ratio, 3/8" Stud 66929 ..........1.6 Ratio, 3/8" Stud 66929C.........1.6 Ratio, 3/8" Stud 66930 ..........1.5 Ratio, 7/16" Stud 66930C.........1.5 Ratio, 7/16" Stud 66931 ..........1.6 Ratio, 7/16" Stud 66931C.........1.6 Ratio, 7/16" Stud Extruded Aluminum Roller-Rocker Arms Rid your engine of internal friction with roller-tipped rocker arms. The race-proven full needle bearing, fulcrum and roller tip not only unleash horsepower, they also lengthen valve train component life and reduce wear and tear on valve stem tips. Precision machined to insure consistency and ratio accuracy. 16 extruded aluminum roller rockers and 16 poly locks. Fits Chevy small block engines. 66907 ..........1.5 Ratio 3/8" Stud 66907C.........1.5 Ratio 3/8" Stud 66908 ..........1.6 Ratio 3/8" Stud 66908C.........1.6 Ratio 3/8" Stud 66909 ..........1.5 Ratio 7/16" Stud 66909C.........1.5 Ratio 7/16" Stud 66910 ..........1.6 Ratio 7/16" Stud 66910C.........1.6 Ratio 7/16" Stud 66920C.........1.5 Ratio 3/8" Stud (8 pcs) 1.6 Ratio 3/8" Stud (8 pcs) Fits Chevy small block engines w/ center hold-down valve covers. 66914 ..........1.5 Ratio 3/8" Stud, Self Aligning 66914C.........1.5 Ratio 3/8" Stud, Self Aligning 66915 ..........1.6 Ratio 3/8" Stud, Self Aligning 66915C.........1.6 Ratio 3/8" Stud, Self Aligning Fits Chevy big block engines. 66913 ..........1.7 Ratio 7/16" Stud 66913C.........1.7 Ratio 7/16" Stud Fits Ford small block engines. 66911 ..........1.6 Ratio 3/8" Stud 66911C.........1.6 Ratio 3/8" Stud 66912 ..........1.6 Ratio 7/16" Stud 66912C.........1.6 Ratio 7/16" Stud Fits Ford Alum. S/B Pedestal Mt. 77-94, 302HO 351W Hyd. Roller Cams. 66879 ..........1.6 Ratio 5/16" Stud 66878 ..........1.7 Ratio 5/16" Stud Fits Ford 302 Boss 351C, 429-460. 66861C.........1.73 Ratio 7/16" Stud Fits Oldsmobile 350-455. 66860C.........1.6 Ratio 7/16" Stud Fits Chrysler. Supplied with hardened shaft and hardware. 66869 ..........1.5 Ratio for S/B 66868 ..........1.5 Ratio for B/B Rocker Pushrod Kits Rocker (Long Slot) Heat-Treated Pushrod Kit. Fits Chevy small block engines. 66923C.........1.5 Ratio, 3/8" Stud Cast Chrome Moly Roller-Rocker Arms These rocker arms are cast of tough chrome moly alloy. Perfect for the average street engine. More rigid and durable than the stock, stamped variety. Roller tip reduces friction. Fits Chevy small block engines. 66933C.........1.5 Ratio 3/8" Stud 66925C.........1.6 Ratio 3/8" Stud 66926C.........1.5 Ratio 3/8" Stud, Self Aligning 66927C.........1.6 Ratio 3/8" Stud, Self Aligning Stamped Roller-Tip Rocker Arms The super affordable way to reduce internal valve train friction and valve stem wear. Extra long slot eliminates rocker to stud interference when using high lift cams. 16 rockers, anti-gall grooved balls and nuts per package. Fits Chevy small block engines. 66906B.........1.5 Ratio 3/8" Stud 66906C.........1.5 Ratio 3/8" Stud 66922 ..........1.6 Ratio 3/8" Stud 66922C.........1.6 Ratio 3/8" Stud Stamped Stock Long-Slot Rocker Arms For use when roller tip is not required. Proven OEM quality. Extra long slot eliminates rocker to stud interference when using high lift cams. 16 rockers, grooved balls and nuts per package. Fits Chevy small block engines. 66905 ..........1.5 Ratio 3/8" 67300 ..........1.6 Ratio 3/8" Poly Locks for Roller-Rocker Arms Fits most extruded aluminum rocker arms. 16 per package. 66935 ..........3/8" 66936 ..........7/16" Grooved Balls and Nuts Fits most stamped rocker arms. Anti-gall balls. 16 each per package. 66924C.........3/8" x 24 threaded studs Valve Train: Rocker Arms Pushrods 14 Some items may not be legal for sale or use in California or on any pollution controlled vehicle. Suffix C Clamshell Packaging.

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