ROLLER ROCKER ARM

This part is no longer available.
ROLLER ROCKER ARM
M-6564-A351
Instruction Sheet
Available (PDF)
    PART NUMBER PACKAGE OF (16)APPLICATIONSDESCRIPTIONNOTES
    RATIOMOUNTINGVALVE TYPE
    M-6564-A351*289/302/351W and Ford Racing aluminum cylinder heads M-6049-J3021.60:1StudInlineRequires 3/8" stud, push rod guide plates & hardened push rods. Cast iron ylinder heads require pedestal machining.
    M-6564-D351*1.70:1StudInline
    M-6564-K351*289/302/351 Ford Racing aluminum cylinder head
    M-6049-Z304    		1.60:1StudInlineRequires 7/16" stud, push rod guide plates & hardened push rods. Cast iron cylinder heads require pedestal machining.
    M-6564-B351*1 2302/351W - 1978 and later with production heads. Cast iron and aluminum GT-40 heads1.60:1Bolt OnInlineFor 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*12302/351W - 1978 and later with production heads. Cast iron and aluminum GT-40 heads1.70:1Bolt OnInlineSame 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.1.65:1StudInline7/16" stud mount intake rocker with .150" offset pushrod cup (pkg. of 16).
    M-6564-C351*351C/351M/400
    1973 and later
    429/460 production
    cylinder heads.    		1.73:1Bolt OnCantedFor 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.
    M-6564-A460*351C/351M/400
    302 BOSS/429/
    460,429 CJ/SCJ and Ford Racing
    high port aluminum cylinder heads.    		1.73:1StudCantedFor canted valve cylinder heads. Requires 7/16" stud, push rod guide plates, hardened push rods. Some cast iron cylinder heads require pedestal machining.

    NOTES:

    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.
Part Type
Engine: Valves / Springs
Instruction Sheet
Warranty Availability
Not Available
Package Dimensions
4.5" x 3.25" x 17.75"
Package Weight
9 lb(s)
UPC Code
756122656068
Country of Origin
United States