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Product Summary

389, 400, 421, 428, 455, Assembled Cylinder Head Style

  • They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head.
  • The Edelbrock #60599 Performer RPM head with the 72cc combustion chamber are for higher compression engines.
  • Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed.
  • This cylinder head delivers great throttle response and power from 1500 to 6500 rpm.
  • They also feature the highest quality intake and exhaust valves and valve springs.

Key Specs

Cylinder Head StyleAssembled
Material TypeAluminum
FinishNatural
Combustion Chamber Volume72cc
Intake Runner Volume215cc

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Edelbrock 60599 Details

The Edelbrock #60599 Performer RPM cylinder head is designed for outstanding performance gains in 1962-79 389-455 c.i.d. Pontiac engines.

  • They are patterned after the 1969-70 Ram Air IV Pontiac cylinder head.
  • The Edelbrock #60599 Performer RPM head with the 72cc combustion chamber are for higher compression engines.
  • Performer RPM head is perfect for street performance, daily drivers, street rods and muscle cars where seat-of-the-pants performance is needed.
  • This cylinder head delivers great throttle response and power from 1500 to 6500 rpm.
  • They also feature the highest quality intake and exhaust valves and valve springs.

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Edelbrock 60599 Specifications

KEY SPECS
MFG. Part #60599
BrandEdelbrock
Cylinder Head StyleAssembled
Material TypeAluminum
FinishNatural
Combustion Chamber Volume72cc
Intake Runner Volume215cc
GENERAL
Speedway Motors Catalog Part #325-60599
Exhaust Runner Volume175cc
Combustion Chamber Volume Range70cc - 79cc
Intake Runner Volume Range210cc - 219cc
Exhaust Runner Volume Range170cc - 179cc
CNC-Machined RunnersNo
CNC-Machined Combustion ChamberNo
Intake Port LocationStandard
Exhaust Port ShapeRam Air IV
Exhaust Port LocationStandard
Intake Valve Diameter2.11"
Intake Valves IncludedYes
Intake Valve Angle14 °
Exhaust Valve Diameter1.66"
Exhaust Valves IncludedYes
Valve Spring IncludedYes
Spring Diameter1.46"
Damper Spring IncludedYes
Number of Springs Per ValveSingle
Maximum Lift0.575"
Machined for O-RingNo
Valve Seat Machine Style3-angle
Valve Seats MachinedYes
Valve Seat MaterialDuctile Iron
Valve Stem Seals IncludedYes
Valve Stem Seal TypePositive Stop
Valve Guides IncludedYes
Valve Guide MaterialManganese Bronze
Locks IncludedYes
Lock Style7 Degree
Retainers IncludedYes
Retainer MaterialSteel
Guideplates IncludedYes
Guideplate Pushrod Size0.312"
Rocker Arms IncludedNo
Rocker Arm Studs IncludedYes
Rocker Arm Nuts IncludedNo
Oiling StyleThrough Pushrod
Heat CrossoverYes
Steam Holes DrilledNo
Accessory Bolt Holes DrilledYes
Valve Cover Mounting StylePerimeter Bolt
NotesThese heads require Ram Air IV (round port) style exhaust manifolds or headers and Edelbrock head bolt kit 8549.
Sold in QuantityEach
GTIN Code085347605996