Edelbrock 5025 Small Block Ford 170cc E-STREET Cylinder Heads, 2.02 in. intake Valve, Pair-2

Edelbrock 5025 Small Block Ford 170cc E-STREET Cylinder Heads, 2.02 in. intake Valve, Pair

$1,313.29
MSRP: $1,707.28
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SKU:
EDE5025
MPN:
5025
UPC:
85347050253
Condition:
New
Weight:
64.20 LBS
Shipping:
Calculated at Checkout

Applies To Continental U.S. orders only

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Edelbrock - E-Street 170cc

 

The Edelbrock #5025 E-Street cylinder heads are designed for Ford 289-351 W V8 applications. The 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. The modern combustion chamber designs improve the combustion process and larger than stock intake and exhaust ports move more air through your engine for improve efficiency. For use on pre-pollution controlled vehicles only.INSTALLATION NOTES: - Ideal for operating in the idle to 5500 rpm range - Use with hydraulic flat tappet camshafts, .550" maximum lift - not compatible with hydraulic roller camshafts - 289-302 with 7/16" head bolts require #9680 head bolt kit - 2.02" heads require additional piston to valve clearance - Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. - Requires hardened pushrods. 289-302 c.i.d. with 7/16" head bolts requires #9680 head bolt bushing kit.

 

  • Ideal for operating in the idle to 5500 rpm range
  • Made in the USA from A356 aluminum and heat treated to T-6 spec
  • Larger than stock intake and exhaust ports for increased power
  • Modern combustion chamber design for improved efficiency and mileage potential
  • Heli-Coil threaded inserts in the rocker stud bosses for proper torque load without damaging threads
  • Hardened spring cups between the valve springs and casting for wear protection
  • Cylinder Head Specifications

 

Description Complete (Pair)
E-Street 170 with 2.02 in. intake valves 5025

Technical Notes: Use with Hydraulic Flat Tappet camshafts .550" max lift. (NOT compatible with Hydraulic Roller Camshafts) Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Requires hardened pushrods. 289-302 c.i.d. with 7/16" head bolts requires #9680 head bolt bushing kit. 1.90" heads are ideal for stock pistons; 2.02" heads require additional piston to valve clearance. Rocker arm studs & guide plates are not included with bare versions of E-Street cylinder heads.

 

Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench @ 28" H2O #5025
Valve Lift:   .100"   .200"   .300"   .400"   .500"   .600"   .700"
Intake:            65     121      174     216     242     249      N/A
Exhaust:         42       92      130     150     162     168      N/A

 

* Not legal for sale or use on pollution controlled motor vehicles.


Features
  • Combustion chamber volume 60cc
  • Intake runner volume 170cc
  • Exhaust runner volume 60cc
  • Intake valve diameter 1.90" & 2.02"
  • Exhaust valve diameter 1.60"
  • Valve stem diameter N/A
  • Valve guides Manganese bronze
  • Deck thickness 5/8"
  • Valve spring diameter 1.460"
  • Valve spring maximum lift .550"
  • Rocker stud 3/8" with guide plate
  • Guideplate Hardended steel
  • Pushrod diameter 5/16"
  • Valve angle N/A
  • Exhaust port location Stock
  • Spark plug fitment 14mm x 3/4 reach, gasket seat
  • Made In USA
    • Cylinder Head Style:
    Assembled
    Cylinder Head Material:
    Cast aluminum
    Cylinder Head Finish:
    Natural
    CNC-Machined Combustion Chamber:
    No
    Combustion Chamber Volume (cc):
    60cc
    Combustion Chamber Style:
    Heart
    CNC-Machined Intake Runner:
    No
    Intake Runner Volume (cc):
    170cc
    Intake Port Shape:
    Rectangular
    Intake Port Location:
    Standard
    Intake Valve Angle:
    20 degree
    CNC-Machined Exhaust Runner:
    No
    Exhaust Runner Volume (cc):
    60cc
    Exhaust Port Shape:
    Square
    Exhaust Port Location:
    Standard
    Exhaust Valve Angle:
    20 degree
    Intake Valves Included:
    Yes
    Intake Valve Diameter (in.):
    2.020 in.
    Exhaust Valves Included:
    Yes
    Exhaust Valve Diameter (in.):
    1.600 in.
    Valve Type:
    N/A
    Maximum Valve Lift (in.):
    0.550 in.
    Valve Springs Included:
    Yes
    Valve Spring Type:
    Single w/Damper
    Outside Diameter of Outer Spring (in.):
    1.460 in.
    Valve Guides Included:
    Yes
    Valve Guide Material:
    Manganese bronze
    Valve Seats Machined:
    Yes
    Valve Seat Material:
    Powdered metal
    Valve Seat Machine Style:
    3-angle
    Retainers Included:
    Yes
    Retainer Material:
    Steel
    Valve Stem Seals Included:
    Yes
    Valve Stem Seal Style:
    Viton Positive stop
    Locks Included:
    Yes
    Lock Style:
    7 degree steel
    Camshaft Style:
    Hydraulic flat tappet
    Spark Plug Style:
    Angled
    Guideplates Included:
    Yes
    Guideplate Pushrod Size:
    5/16 in.
    Rocker Arm Studs Included:
    Yes
    Rocker Arm Nut Thread Size:
    3/8-24 in.
    Accessory Bolt Holes Drilled:
    Yes
    Valve Cover Mounting Style:
    Perimeter bolt
    Heat Crossover:
    No
    Steam Holes Drilled:
    No
    Oiling Style:
    Through pushrod
    Machined for O-Ring:
    No
    Quantity:
    Sold as a pair.
    Notes:
    Designed for use with hydraulic flat tappet camshafts. Requires use of hardened pushrods. Part number 9680 head bolt bushing kit required for use with 7/16 in. head bolts. Not rrecommended for use with a hydraulic or mechanical roller camshafts. Spar
    Make:
    Ford
    Engine Family:
    Ford small block Windsor
    Engine Sizes:
    4.7L/289-5.8L/351
    Years:
    1963-1995

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