-40%
.550
.550

.550" Lift Z28 Spring Kit w Stainless Valves Studs for Chevrolet SBC 283 327 350

$ 136.75

Availability: 16 in stock
  • Other Part Number: rv943x
  • Condition: New
  • Fitment Type: Performance/Custom
  • Item must be returned within: 30 Days
  • Brand: Engine Pro
  • Warranty: Unspecified Length
  • Returns Accepted: Returns Accepted
  • Refund will be given as: Money Back
  • Return shipping will be paid by: Buyer
  • Restocking Fee: No
  • Manufacturer Part Number: vt550c

    Description

    This listing is for a complete set of .550" max lift valve springs, stainless "street series" valves, steel moly retainers, hd valve locks, 3/8" screw-in studs, and 5/16" guideplates.  Fits Small Block Chevy iron cylinder head engines.
    Springs
    Spring O.D.: 1.259"
    Spring I.D.: .876"
    Closed Load: 121# @ 1.800"
    Open Load: 365# @ 1.200"
    Coil Bind: 365
    Material: Chrome Silicon Alloy
    Valves
    Stainless steel valves feature undercut stems, one piece forging, hardened tip, and hard chrome plated stem.
    Intake
    Head Diameter: 2.020"
    Stem Diameter: 11/32"
    Overall Length: 4.910"
    Exhaust
    Head Diameter: 1.600"
    Stem Diameter: 11/32"
    Overall Length: 4.910"
    Rocker Arm Studs
    Base Thread Diameter: 7/16"
    Length: .680"
    Upper Thread Diameter: 3/8"
    Effective Stud Length: 1.750"
    Material: heat treated 8740 chromemoly
    Guideplates
    Push rod Diameter: 5/16"
    Type: flat
    Notes: black oxide coating
    Note:  This kit may require machine work.