Dart Iron Eagle Small Block Chevrolet 23° 180cc / 64cc Bare Head
Sold in Quantity: Each
Details
Dart 180 SBC 23° Iron Cylinder Head
Part# 10110010
Material: Superior Iron alloy
Comb Chambers: 64cc
Intake Valve Dia: 2.02”
Intake Port volume: 180cc
Intake Port Dim: 1.920”x 1.120”
Int Port Location: Stock
Intake Gasket: Fel-Pro # 1204
Exh Valve Dia.: 1.600”
Exh Port volume: 77cc
Exhaust Port Dim: 1.350” x 1.400” w
Exh Port Location: Stock location & bolt pattern
Exhaust Gasket: Fel-Pro# 1404
Flow, Intake: 269cfm @ .600” lift / 28”
Flow, Exhaust: 205cfm @ .600” lift / 28”
Head Bolts: Dart bolt kit PN# 66220011
Head Studs: Dart stud kit PN# 66120011
Manifold: Dart Alum Dual Plane PN# 42811000
Milling: Min. 58cc = .060” (.0065” = 1cc) Flat Mill
Angle mill .125” safely / .200” = 49cc 1.5° (carefully)
Pistons: Most 23°aftermarket pistons.
Push Rod length: Stock (Stock length = 7.800”)
Push Rod Guide Plate: Dart adjustable guide Plate PN# 27001410
Retainers: Steel 1.250” = (7° ) 1.437” = (10°)
Spark Plug: Angle or straight, .460” reach, tapered seat
Spring Cups: None
Spring Pockets: 1.550” OD (.030” deeper max)
Springs: Our Assembly: 1.250S = 110# @ 1.700” / .520” max
1.437D = 130# @ 1.800” / .620” max
Valve Angles: 23°
Valve Length: Std. = 4.915”
Valve Stem Dia: .3415” - 11/32”
Valve Train: STD SBC 3/8” stud mount
Valve Guides: .439” OD In = Mag-bronze Ex. = Mag-bronze (.002” press)
Valve Guide length: 1.950”
Valve Guide clearance: .0014” - .002” (with our .3415 dia. valve stem)
Valve Guide Spacing: 1.890” moved .030” from stock
Valve Seats: Ex. = Powdered Metal, .006” press
Valve Seat dim. Ex. - 1.650” x 1.350” x .350”
Valve Seat angles: In = 32° - 45° - 60° - 70°-80° Ex. = 37° - 45° - radius
Stud Girdle: Dart PN# 64110002
Torque: w/oil Head Bolts = 70 ft/lb
Rocker Studs = 55 ft/lb
Manifold = 35 ft/lb
Block Use: Any SBC Iron or Aluminum
Weight: 52 lbs Bare – 58 lbs Assembled
23 degree cylinder heads