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Dart Machinery SHP Aluminum Chev SB Heads
Dart's SHP cylinder heads provide a low cost option to those looking for the weight savings cost of an aluminum head for a street performance engine.
- A356-T6 aluminum alloy
- Bolt on compatibility: Standard valve angle and spacing are retained to allow use of off the shelf pistons and valve train components
- Multi-angle intake seats and radiused exhaust seats dramatically increase air/fuel flow
- Hardened exhaust seats are compatible with unleaded gasoline
- Manganese bronze valve guides extend cylinder head life
- Machined for 1.250" or 1.437" diameter valve springs
- Straight spark plug configuration
Assemblies Feature: 2.020"/1.600" 1-piece stainless steel valves, 1.437" high quality springs, retainers and keepers, guide plates and 3/8" rocker studs. Made in USA.
Part Type: Cylinder Head
Application: Dart SHP Chevrolet Small Block
Cylinder Head Material: A356-T6 Aluminum
Bare or Assembled: Assembled
Combustion Chamber Size: 72cc
CNC Machined Combustion Chambers: No
Intake Valve Angle: 23
Exhaust Valve Angle: 23
Intake Port Volume: 200cc
CNC Machined Intake Port: No
Intake Port Flow: 248 cfm @ .500" Lift / 28"
Intake Port Location: Standard
Intake Port Shape: Rectangular
Intake Port Dimensions: 1.180" x 2.095"
Suggested Intake Gaskets: Fel-Pro 1205 or Equivalent
Exhaust Port Volume: 75cc
CNC Machined Exhaust Port: No
Exhaust Port Flow: 170 cfm @ .500" Lift/ 28"
Exhaust Port Location: Standard
Exhaust Port Shape: Square
Exhaust Port Dimensions: 1.375" x 1.325"
Suggested Exhaust Gaskets: Fel-Pro 1404 or Equivalent
Spark Plug Style: Straight
Suggested Spark Plug: .750" reach, 14mm hex
Valve Guides: Yes
Valve Guide Spacing: 1.890" moved .030" from stock
Valve Stem Diameter: 11/32" (.3415")
Valve Seats: Yes
Valve Job: Multi-Angle
Intake Valve Diameter: 2.020"
Intake Valve Included: Yes
Exhaust Valve Diameter: 1.600"
Exhaust Valve Included: Yes
Suggested Valve Length: 4.965"
Valve Spring Pockets: 1.550" O.D. .030" deeper max.
Valve Springs Included: Yes, 1.437" Dual
Valve Spring Application: Hydraulic Flat Tappet/Roller, 130lbs. Seat, .600" Max Lift
Valve Springs Retainers Included: Yes
Valve Locks Included: Yes (10 Degree)
Valve Seals Included: Yes
Rocker Studs Included: Yes (3/8")
Guide Plates Included: Yes
Valve Cover Mounting Style: Perimeter
Steam Holes Drilled: No
Heat Crossover: No
Suggested Head Bolts: ARP 134-3601 or Equivalent
Suggested Head Studs: ARP 134-4001 or Equivalent
Suggested Stud Girdle: Power Products 43100K, Howards Cams 90100, Jomar 1104
Head Bolt Torque with Oil: 70 ft./lbs.
Rocker Stud Torque with Oil: 45 ft./lbs.
Intake Bolt Torque with Oil: 35 ft./lbs.
Manufacturer: Dart Machinery
Manufacturer's Part Number: 127422
Weight: 26 lbs. Each
Warranty: Race Application, No warranty expressed or implied
Quantity: Sold as Each
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