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Edelbrock 61939

RPM LT4 Chevy Aluminum Cylinder Head

Edelbrock 61939

350-61939

made in usa
jegs shipping
FREE Shipping
Ships 01/24/17 if Ordered Today
Edelbrock 61939 RPM LT4 Chevy Aluminum Cylinder Head $1,252.08
  • 1992-97 LT1 and 1996 LT4 Gen II Small Block Chevy
  • Springs for Hydraulic Roller Camshafts
  • Port Volumes: 195cc/75cc
  • Valve Size: 2.02"/1.57"
  • 54cc Combustion Chamber
  • Assembled, Sold Individually

  • Edelbrock 61939 Details

    Chevy RPM Xtreme Cylinder Heads

    Designed for 1996 LT4 (or) 1992-97 LT1 small-block Chevy engines, RPM Xtreme LT4 cylinder heads are CNC ported in critical areas for improved airflow and peak performance. Features include high-quality 8mm stem stainless steel intake and exhaust valves that feed the high flow intake and exhaust ports. The highvelocity intake and exhaust runners are CNC ported in the bowl area and the intake entries and exhaust exits are CNC profiled for increased air-flow. Combustion chambers are fully CNC machined for absolute consistency and combustion. High-quality conical beehive springs are secured with titanium retainers and valve locks for performance up to .600" valve lift. RPM Xtreme LT4 heads are equipped with guide plates and 8mm stem valves, adjustable (non self-aligning) rocker arms are required. Match with RPM Air-Gap intake 350-7109, throttle body 350-5210 and camshaft 350-2108 for the Total Power Package combo.

    Combustion Chamber Volume:54cc
    Intake Runner Volume:195cc
    Exhaust Runner Volume:75cc
    Intake Valve Diameter:2.02''
    Exhaust Valve Diameter:1.57''
    Valve Stem Diameter:8mm
    Valve Guides:Manganese Bronze
    Deck Thickness:5/8''
    Valve Spring Diameter:1.55''/1.30 '
    Valve Spring Maximum Lift:0.600''
    Rocker Stud:3/8''
    Guideplate:Hardened Steel
    Pushrod Diameter:5/16''
    Valve Angle:23°
    Exhaust Port Location:Stock
    Spark Plug Fitment:14mm x 3/4'' Reach,
    Gasket Seat


    Valve LiftIntakeExhaust
    .100''6152
    .200''122103
    .300''176136
    .400''217152
    .500''241160
    .600''252163
    .700''N/AN/A
    Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28'' H2O

    Specifications:

    Emission
    50 State Legal
    Type
    Complete
    Usage
    Street/Performance
    Cylinder Head Type
    LT4
    Preparation
    Factory CNC Ported
    Finish
    Cast Steel
    Engine Make/Size
    GM LT4
    Accessory Bolt Holes Drilled
    Yes
    CARB EO Number
    D-215-70 (pdf)
    CNC-Machined Combustion Chamber
    Yes
    CNC-Machined Exhaust Runner
    No
    CNC-Machined Intake Runner
    No
    Combustion Chamber Volume (cc)
    54
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Aluminum
    Cylinder Head Style
    Assembled
    Damper Spring Included
    No
    Exhaust Port Location
    Standard
    Exhaust Port Shape
    D-Port
    Exhaust Runner Volume (cc)
    75
    Exhaust Valve Diameter (in.)
    1.57
    Exhaust Valves Included
    Yes
    Guideplates Included
    Yes
    Heat Crossover
    No
    Intake Port Location
    Standard
    Intake Port Shape
    Rectangular
    Intake Runner Volume (cc)
    195
    Intake Valve Angle
    23
    Intake Valve Diameter (in.)
    2.02
    Intake Valves Included
    Yes
    Lock Style
    7 degree
    Locks Included
    Yes
    Machined for O-Ring
    No
    Maximum Valve Lift (in.)
    0.6
    Number of Springs Per Valve
    Single
    Oiling Style
    Through pushrod
    Outside Diameter of Outer Spring (in.)
    1.29
    Quantity
    Sold individually
    Retainer Material
    Titanium
    Retainers Included
    Yes
    Rocker Arm Nuts Included
    No
    Rocker Arm Studs Included
    Yes
    Rocker Arms Included
    No
    Spark Plug Style
    Angled
    Steam Holes Drilled
    No
    Valve Cover Mounting Style
    Centerbolt
    Valve Guide Material
    Manganese bronze
    Valve Guides Included
    Yes
    Valve Seat Machine Style
    3-angle
    Valve Seat Material
    Ductile iron
    Valve Seats Machined
    Yes
    Valve Springs Included
    Yes
    Valve Stem Seal Style
    Positive stop
    Valve Stem Seals Included
    Yes
    Manufacturer's Part Number:
    61939

    For the ultimate performance, Xtreme heads are CNC ported for added hp and torque over standard Performer & Performer RPM models.

    RPM Xtreme cylinder heads give you the best combination of as-cast port design and custom CNC technology by blending the affordability of as-cast ports with custom CNC porting in the critical areas (combustion chambers, intake entry, exhaust exit and intake/exhaust bowls) for improved air flow and overall performance. This proven combination provides you with a powerful cylinder head at a lower cost than a typical fully CNC'd cylinder head.

    Edelbrock Xtreme heads are ideal for high-performance street and entry-level race applications. These heads are sold complete (unless noted) with high-quality springs, stainless steel valves and have heli-coil inserts installed in the exhaust flange and rocker stud bosses. Made In The USA.

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