Engine Kits

Edelbrock E-Street Cylinder Heads Chevy Small Block 327-350-400 Pair
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Edelbrock E-Street Cylinder Heads Chevy Small Block 327-350-400 Pair

Part #: 5073
List Price: $2,028.71
Our Price: $922.14
You Save: $1,106.57

Availability: In Stock

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Edelbrock E-Street Cylinder Head Chevy Small Block 302-400 Assembled Pair '86 And Earlier with 70cc combustion chambers.
  • Sold as a pair.
  • Designed for entry-level street performance
  • Manufactured in the USA
  • Larger then stock intake and exhaust ports move more air through the engine.
  • Assembled with manganese bronize valve guides
  • Idea for street performance engines (300 hp to 400 hp) in idle to 5,500 rpm range
Designed for use with hydraulic camshafts less than .550 in. lift. Requires use of hardened pushrods.

This all-new Edelbrock E-Street cylinder head is just right for the street performance crowd. Manufactured in the USA by Edelbrock, this E-Street cylinder head features A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. The modern combustion chamber design helps to improve the combustion process and their larger-than-stock intake and exhaust ports help to move more air through your engine. These features improve an engine's efficiency, resulting in more horsepower and torque and improved mileage potential.

This E-Street cylinder head has been assembled with manganese bronze valve guides, powder metal interlocking valve seats, stainless steel one-piece valves with hardened tips, damper springs, 3/8 in. screw-in studs, and guideplates. Is ideal for street performance engines (300 hp to 400 hp)operating in the idle to 5,500 rpm range.

Combustion chamber volume 70cc 
Intake runner volume 185cc
Exhaust runner volume 60cc
Intake valve diameter 2.02"
Exhaust valve diameter 1.60"
Valve stem diameter 11/32"
Valve guides Manganese bronze
Deck thickness 9/16"
Valve spring diameter 1.25"
Valve spring maximum lift .550"
Rocker stud 3/8" with guide plate
Guideplate Hardended steel
Pushrod diameter 5/16"
Valve angle 23°
Exhaust port location Stock
Spark plug fitment 14mm x 3/4" reach, gasket seat
Made In USA

Additional Items to match these cylinder heads....  2701 , 260-1000 , 1406

Technical Notes: Use with hydraulic camshafts .550" max lift. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Requires hardened pushrods. Not legal for sale or use on pollution controlled motor vehicles.

Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O
#5073, #5089
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 63 125 182 225 248 249 -
Exhaust 51 99 131 153 163 168 -
Accessory Bolt Holes Drilled Yes
Brand Edelbrock
CNC-Machined Combustion Chamber No
CNC-Machined Exhaust Runner No
CNC-Machined Intake Runner No
Combustion Chamber Volume (cc) 70
Cylinder Head Finish Natural
Cylinder Head Material Aluminum
Cylinder Head Style Assembled
Damper Spring Included Yes
Exhaust Port Location Standard
Exhaust Port Shape Square
Exhaust Runner Volume (cc) 60cc
Exhaust Valve Diameter (in) 1.600 in.
Exhaust Valves Included Yes
Guideplate Pushrod Size 5/16 in.
Guideplates Included Yes
Heat Crossover No
Intake Port Location Standard
Intake Runner Volume (cc) 185cc
Intake Valve Diameter (in) 2.020 in.
Intake Valves Included Yes
Lock Style 7 degree
Locks Included Yes
Machined for O-Ring No
Maximum Valve Lift (in) 0.550 in.
Notes Designed for use with hydraulic camshafts less than .500 in. lift. Requires use of hardened pushrods.
Number of Springs Per Valve Single
Oiling Style Through pushrod
Outside Diameter of Outer Spring (in) 1.250 in.
Part Type Cylinder Heads
Product Line Edelbrock E-Street Cylinder Heads
Quantity Sold as a pair.
Retainer Material Steel
Retainers Included Yes
Rocker Arm Nut Thread Size 3/8-24 in.
Rocker Arm Nuts Included No
Rocker Arm Studs Included Yes
Rocker Arms Included No
Spark Plug Style Straight
Steam Holes Drilled No
Valve Cover Mounting Style Perimeter bolt
Valve Guide Material Manganese bronze
Valve Guides Included Yes
Valve Seat Machine Style 3-angle
Valve Seat Material Powdered metal
Valve Seats Machined Yes
Valve Springs Included Yes
Valve Stem Seal Set Included Yes
Valve Stem Seal Style Umbrella

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