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
This product was added to our catalog on Wednesday 19 July, 2006.