Iron Eagle S/S SBC 165cc Port Cylinder Heads

DART Iron Eagle Small Block Chevy Cylinder Heads

165cc runner, 72cc Chamber, Straight Plug - Available Bare or Assembled

These heads are priced ASSEMBLED with 1.250 Single spring, 110# .520 max lift

***Heads are priced for EACH, 2 are required for an engine***

Designed for Street and strip performance, towing with stock or mildly modified engines.

From DART's Website:

The result of three decades of cylinder head development, Iron Eagle heads incorporate features that were previously available only in expensive aluminum cylinder heads. We designed Iron Eagle heads for street performance, bracket racing, oval track competition, and high-performance marine use. We offer five different intake ports - 165cc, 180cc, 200cc, 215cc, and 230cc that cover virtually every engine application. Dart Iron Eagle heads have standard features you don’t get in other factory and aftermarket cast-iron cylinder heads. Long-wearing bronze valve guides (except S/S), multi-angle intake valve seats, and hardened and radiused exhaust seats are standard.

Part#

10021070 - 1002111

Material:

Superior iron alloy

Comb Chambers:

67, 72 or 76cc

Intake Valve Dia:

1.940” or 2.02"

Intake Port volume:

165cc

Intake Port Dim:

1.100”w x 1.925”t

Int Port Location:

Stock

Intake Gasket:

Fel-Pro# 1204 or OEM type

Exh Valve Dia.:

1.500”

Exh Port volume:

65cc

Exhaust Port Dim:

1.340”w x 1.300”t

Exh Port Location:

Stock location & bolt pattern

Exhaust Gasket:

Fel-Pro# 1404

Flow, Intake:

210 cfm @ .500” lift / 28”

Flow, Exhaust:

138 cfm @ .500” lift / 28”

Head bolts:

Stock bolts can be used. ARP# 134-3601

Manifold:

Most aftermarket

Milling:

Min. 62cc = .060” (.0065” = 1cc) Flat Mill

Pistons:

Most 23°aftermarket pistons.

Push Rod length:

Stock (Stock length = 7.800”)

Push Rod Guide:

Stock type, integral

Retainers:

Steel 1.250” = ( 7° ) 1.437” = (10° )

Rocker Arm stud:

Use screw-in stud w/integral nut

Spark Plug:

Straight, .460” reach, tapered seat, Autolite AR13

Spring Cups:

None

Spring Pockets:

Cut for 1.250” & 1.550” OD (.030” deeper max)

Spring Options

1.437D = 130# @ 1.800” / .620” max Comp 987

:1.250S = 110# @ 1.700” / .520” max Comp 981

Valve Angles:

23°

Valve Length:

Std = 4.890”

Valve Stem Dia:

.3415” - 11/32”

Valve Guides:

Integral

Valve Guide clearance:

.002” - .0025” (with our .3415 dia. valve stem)

Valve Guide Spacing:

1.890” moved .030” from stock

Valve Seals:

Cut for umbrella seals

Valve Seats:

Exh = Hardened Ductile Iron, .006” press

Valve Seat dim:

Exh - 1.650” x 1.280” x .350”

Valve Seat angles:

Int = 32° - 45° - 60° - 70° Exh = 37° - 45° - radius

Stud Girdle:

Use any standard girdle

Torque:

w/oil Head Bolts = 70 ft/lb, Rocker Studs = 45 ft/lb, Manifold = 35 ft/lb

Block Use:

Weight: 48 lbs

Any SBC Iron or Aluminum