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RAK-455 (400-425-455)

$349.00

Fits all 400-425-455 big blocks. 9.700″ x 5/16 pushrods. This kit is an adjustable rocker arm system (non-roller) for adjusting your valves. For street use only, no more than .500″ lift, no more than 320 lbs. open spring pressure, and no machine work needed. Fits under stock valve covers. This kit eliminates the costly replacement of stock rocker arms and rocker pivots. Kit includes: Stamped steel 1.6:1 ratio rocker arms and rocker balls, 3/8″ x 5/16″ screw in studs, 5/16″ guide plates, chrome moly pushrods, 3/8″ heat treated poly locks for positive adjustment. Oil restricted pushrods can be substituted for an additional $129.00 (all ‘A’ heads must be drilled to 7/16″ to accept our RAK rocker kits).

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Additional information

Weight 11 lbs
Dimensions 20 × 6 × 3 in