Part Details
ROLLER ROCKER ARM
M-6564-J351*
This part is no longer available.
tech notes
- M-6564-J351*
Same as M-6564-H351* but has a 1.65:1 Ratio.
| PART NUMBER PACKAGE OF (16) | PART NUMBER PACKAGE OF (2) | APPLICATIONS | DESCRIPTION | NOTES | ||
| RATIO | MOUNTING | VALVE TYPE | ||||
| M-6564-A351* | M-6564-AS51* | 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-D351* | M-6564-DS51* | 1.70:1 | Stud | Inline | ||
| M-6564-K351* | N/A | 289/302/351 Ford Racing aluminum cylinder head M-6049-Z304 | 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* | M-6564-BS51*(1)(3) | 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-E351*(1)(3) | M-6564-ES51*(1) | 1.70:1 | Bolt On | Inline | ||
| M-6564-A50*(1) | (2) | 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* | N/A | 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). |
| M-6564-G351* (Exhaust Only) | N/A | M-6049-N351/N352 "Sportsman" head. | 1.50:1 | Stud | Inline | 7/16" stud mount rocker (pkg. of 8). |
| M-6564-H351* (Intake Only) | N/A | M-6049-N351/N352 "Sportsman" head. | 1.50:1 | Stud | Inline | 7/16" stud mount rocker with .150" offset pushrod cup (pkg. of 8). |
| M-6564-C351* | M-6564-CS51* | 351C/351M/400 1973 and later 429/460 production cylinder heads. | 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. |
| M-6564-A460* | M-6564-AS60* | 351C/351M/400 302 BOSS/429/460, 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 -E351 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) Serviced individually from your Ford or Lincoln-Mercury dealer.
(3) Rocker channels not included.