Page 56 - 2021-22_EngineCatalogAP

CYLINDER HEADS
283-400 (Cont.)
Edelbrock NHRA Performer RPM Aluminum Cylinder Heads
Super Stock NHRA-approved Edelbrock bare cylinder head has valve guides and seats installed, but will require final sizing and valve job to match the valves chosen. 9/16" deck thickness, 3/8" rocker arm studs, and 5/16" pushrod hole. For use with stock rocker arms. Sold each.
Edelbrock E-Tec Aluminum Cylinder Heads
E-Tec heads use a high-quench combustion chamber for increased power on 302- 400 engines fitted with “Vortec-style” intake manifolds. Fully assembled heads, 1.460" dia. dual springs for hyd. roller applications, available in170cc and 200cc intake runner versions. Sold individually.
Edelbrock E-Street
E-StreetTM aluminum cylinder heads are for street performance engines operating in the idle to 5,500 RPM range. Modern combustion chamber designs and larger than stock intake and exhaust ports move more air for increased horsepower and torque. Head has bronze valve guides, powder metal interlocking valve seats, stainless steel one-piece valves with hardened tips, 1.25" diameter valve springs, 3/8" screw-in studs, and guide plates. Sold in pairs.
Edelbrock E-210 E-Series Aluminum Cylinder Heads
The E-210 E-Series heads offer a step up to race-level performance with OEM compatibility in applications up to 500 HP naturally aspirated, or more for forced air induction. Featuring large 210cc intake runners, revised exhaust ports, large diame- ter springs for higher lift cams for large displacement engines. Sold in pairs.
Edelbrock E-CNC 225 Aluminum Cylinder Heads
The E-CNC 225 cylinder heads feature fully CNC-machined intake ports, combus- tion chambers, and exhaust ports. Intake flange bolt pattern for use with 1996 and earlier intake manifolds. Delivers 30-60 HP over Performer RPM. Sold individually.
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve
Exhaust Valve
EDE60887
Bare Head
185cc
64cc
Straight
23°
2.020"
1.600"
EDE60947
Bare Head
185cc
64cc
Straight
23°
2.020"
1.600"
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve
Exhaust Valve
EDE60975
E-Tec 170 Assembled
170cc
64cc
Angle
23°
2.020"
1.600"
EDE60985
E-Tec 200 Assembled
200cc
64cc
Angle
23°
2.020"
1.600"
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve
Exhaust Valve
EDE5073
Assembled, E-Street, (Pair)
185cc
70cc
Straight
23°
2.020"
1.600"
EDE5089
Assembled, E-Street, (Pair)
185cc
64cc
Straight
23°
2.020"
1.600"
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve
Exhaust Valve
EDE5085
Assembled, 1.46" Single Valve Spring for Hydraulic Flat Tappet
210cc
64cc
Straight
23°
2.080"
1.600"
EDE5087
Assembled, 1.55" Dual Spring for Mech Flat Tappet or Hydraulic Roller
210cc
64cc
Straight
23°
2.080"
1.600"
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve
Exhaust Valve
EDE61205
Assembled, 1.46" Springs for Hydraulic Roller
225cc
68cc
Angled
23°
2.100"
1.600"
54 2021-22 ENGINE BUILDER CATALOG
CHEVROLET SMALL BLOCK