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ROLLER ROCKER ARM
|PART NUMBER PACKAGE OF (16)||APPLICATIONS||DESCRIPTION||NOTES|
|M-6564-A351*||289/302/351W and Ford Racing aluminum cylinder heads M-6049-J302||1.60:1||Stud||Inline||Requires 3/8" stud, push rod guide plates & hardened push rods. Cast iron ylinder heads require pedestal machining.|
|M-6564-K351*||289/302/351 Ford Racing aluminum cylinder head|
|1.60:1||Stud||Inline||Requires 7/16" stud, push rod guide plates & hardened push rods. Cast iron cylinder heads require pedestal machining.|
|M-6564-B351*1 2||302/351W - 1978 and later with production heads. Cast iron and aluminum GT-40 heads||1.60:1||Bolt On||Inline||For stock production cast iron cylinder heads with hydraulic non-adjustable valve train. Does not require guide plates, hardened push rods or pedestal machining. Includes pedestal inserts & bolts.|
|M-6564-A50*12||302/351W - 1978 and later with production heads. Cast iron and aluminum GT-40 heads||1.70:1||Bolt On||Inline||Same as "Cobra" 5.0L Mustang. These rocker arms have beefy trunnions for extra long life. Die cast aluminum construction.|
|M-6564-F351*||M-6049-N351/N352 "Sportsman" head.||1.65:1||Stud||Inline||7/16" stud mount intake rocker with .150" offset pushrod cup (pkg. of 16).|
1973 and later
|1.73:1||Bolt On||Canted||For stock production canted valve cylinder heads with hydraulic non-adjustable valve train. Does not require guide plates, hardened push rods or pedestal machining. Includes pedestal inserts & bolts.|
460,429 CJ/SCJ and Ford Racing
high port aluminum cylinder heads.
|1.73:1||Stud||Canted||For canted valve cylinder heads. Requires 7/16" stud, push rod guide plates, hardened push rods. Some cast iron cylinder heads require pedestal machining.|
1 The M-6564-B351 and -A50 bolt-on roller rocker arms will not clear the stamped rocker cover on standard 5.0L EFI engines. "Taller" valve covers, such as the production 5.0L EFI HO die-cast aluminum cover or Ford Racing chrome cover M-6582-D302, can be used if the baffle is modified in the RH cover. The M-6582-E302 polished aluminum valve cover will clear all rocker arms and stud girdles, but will not fit under the EFI manifold unless a 1" spacer M-9486-A53 is used between the upper and lower sections of the intake. M-6582-E302 will not fit 1994-95 Mustang or 1990-93 T-Bird.
2 Rocker channels not included.