Edelbrock RPM Xtreme Series Cylinder Heads


Edelbrock
Edelbrock RPM Xtreme Series Cylinder Heads

Product images may differ from actual product appearance.

For the ultimate performance, Xtreme heads are CNC ported where it counts. Edelbrock 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. XT Heads are sold complete with high-quality springs, stainless steel valves and have heli-coil inserts installed in the exhaust flange and rocker stud bosses. Sold individually. Made in USA.



Big-Block Chevy Cylinder Heads

350-51559
RPM XT Cylinder Head
  • BB Chevy Rectangular Port
  • 118cc Chamber Volume
  • 344cc LH / 352cc RH Intake Port Volume
  • 142cc Exhaust Port Volume
  • 2.3" Intake Valve Diameter
  • 1.88" Exhaust Valve Diameter
  • Sold Individually
    More info on Edelbrock 51559

    Fits Applications
  • $1,514.99
    Ships
    06/08/12
    Small-Block Chevy Cylinder Heads LT1/LT4

    350-61929
    SB Chevy 5.7L RPM Xtreme CNC Cylinder Head
  • Performer LT1
  • GM LT4
  • 54cc comb chamber
  • 195cc Intake Runner
  • Single
  • Bare
    View this item

    Fits Applications
  • $732.99
    Ships
    06/08/12

    350-61939
    RPM XT Cylinder Head
  • SB Chevy LT1/LT4
  • 54cc Chamber Volume
  • 195cc Intake Port Volume
  • 75cc Exhaust Port Volume
  • 2.02" Intake Valve Diameter
  • 1.57" Exhaust Valve Diameter
  • 1.30" Diameter Valve Spring
  • Sold individually
    More info on Edelbrock 61939

    Fits Applications
    Installation Instructions for Edelbrock 61939
  • $1,059.99
    Ships
    Small-Block Chevy Cylinder Heads

    350-51899
    RPM XT Cylinder Head
  • Small-Block Chevy
  • 64cc Chamber Volume
  • 185cc Intake Port Volume
  • 75cc Exhaust Port Volume
  • 2.02" Intake Valve Diameter
  • 1.60" Exhaust Valve Diameter
  • 1.46" Diameter Valve Spring
  • Sold individually
    More info on Edelbrock 51899
  • $902.99
    To order this item contact Customer Service at 1-800-345-4545.
    Small-Block Chevy LS1/LS2 Cylinder Heads

    350-61949
    RPM XT Cylinder Head
  • SB Chevy LS1/LS2
  • 65cc Chamber Volume
  • 212cc Intake Port Volume
  • 76cc Exhaust Port Volume
  • 2.02" Intake Valve Diameter
  • 1.57" Exhaust Valve Diameter
  • 1.30" Diameter Valve Spring
  • Sold individually
    More info on Edelbrock 61949

    Fits Applications
  • $1,045.99
    Ships
    06/08/12
    Small-Block Ford Cylinder Heads

    350-51259
    RPM XT Cylinder Head
  • Small-Block Ford
  • 59cc Chamber Volume
  • 202cc Intake Port Volume
  • 75cc Exhaust Port Volume
  • 2.02" Intake Valve Diameter
  • 1.57" Exhaust Valve Diameter
  • 1.30" Diameter Valve Spring
  • Sold individually
    More info on Edelbrock 51259

    Fits Applications
    Dyno Chart for Edelbrock 51259
  • $1,053.99
    Ships
    06/08/12