Product Summary

Assembled Cylinder Head Style, Aluminum, Natural

  • These E-Street cylinder heads feature as-cast ports
  • Specially designed for entry-level street performance applications operating in the idle-to-5500 rpm range
  • The 75cc combustion chamber allows this head to be used with stock pistons, while retaining the 9.5:1 compression
  • A modern combustion chamber design also improves the combustion process and the larger than stock intake and exhaust ports move more air through your engine
  • Engineered to improve the engine's efficiency, resulting in more horsepower and torque
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Key Specs

Cylinder Head StyleAssembled
Material TypeAluminum
FinishNatural
Combustion Chamber Volume70cc
Intake Runner Volume185cc
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Need To Know

Quick and Easy Returns

Return Policy

Edelbrock 5073 Details

Edelbrock E-Street cylinder heads offer American made quality and affordable performance. E-Street cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5500 rpm range. They are available for popular V8 engines.

The 75cc combustion chamber allows this head to be used with stock pistons, retaining the 9.5:1 compression. The modern combustion chamber design also improves the combustion process and the larger than stock intake and exhaust ports move more air through your engine. These features improve the engine's efficiency, resulting in more horsepower and torque.

  • Entry Level Street Performance Upgrade
  • A356 Aluminum
  • Sold As A Pair
  • Edelbrock Quality And Performance
  • Affordable Price
  • Made In U.S.A.

Charts

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or 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 5073 Specifications

KEY SPECS
MFG. Part #5073
BrandEdelbrock
Cylinder Head StyleAssembled
Material TypeAluminum
FinishNatural
Combustion Chamber Volume70cc
Intake Runner Volume185cc
GENERAL
Exhaust Runner Volume60cc
Combustion Chamber Volume Range70cc - 79cc
Intake Runner Volume Range180cc - 189cc
Exhaust Runner Volume Range60cc - 69cc
CNC-Machined RunnersNo
CNC-Machined Combustion ChamberNo
Spark Plug StyleStraight
Intake Port LocationStandard
Exhaust Port ShapeSquare
Exhaust Port LocationStandard
Intake Valve Diameter2.02"
Intake Valves IncludedYes
Intake Valve Angle23 °
Exhaust Valve Diameter1.6"
Exhaust Valves IncludedYes
Valve Spring IncludedYes
Spring Diameter1.25"
Damper Spring IncludedYes
Number of Springs Per ValveSingle
Maximum Lift0.550"
Machined for O-RingNo
Valve Seat Machine Style3-angle
Valve Seats MachinedYes
Valve Seat MaterialPowdered Metal
Valve Stem Seals IncludedYes
Valve Stem Seal TypeUmbrella
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 CrossoverNo
Steam Holes DrilledNo
Accessory Bolt Holes DrilledYes
Valve Cover Mounting StylePerimeter Bolt
NotesUses 14mm spark plugs with 3/4" reach, and flat gasket seals
Sold in QuantityPair
GTIN Code085347050734

Questions & Answers

4 Questions • 4 Answers

3/8" rocker studs?

by Mark

• a year ago

1 answer

Are the valve springs in these heads for a roller cam or flat tappet? Also what are the flow numbers of these heads?

by Stephen

• 3 years ago

1 answer

The info on these heads say 75cc combustion chamber retaining 9.5:1 compression, but the specs its listed as a 70cc combustion chamber. I need to know before ordering these heads. Thanks Scott

by Scott 1984 Corvette

• 9 years ago

1 answer

Are these heads for a Gen1 SBC Part # 3255073 Thanks

by scott 1984 corvette

• 9 years ago

1 answer

4 of 4 questions shown

Fitment

  • Gen 1 DZ Small Block Chevy

Customer Impersonation Script