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Part number: 19200136
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Product Details
Dart 19200136 Cylinder Heads
Products specifications
Accessory Bolt Holes Drilled Yes
Calculator Compression Calculator
CNC-Machined Combustion Chamber No
CNC-Machined Exhaust Runner No
CNC-Machined Intake Runner No
Comb Chamber 121cc
Combustion Chamber Style Heart
Combustion Chamber Volume (cc) 119
Cylinder Head Finish Natural
Cylinder Head Material Aluminum
Cylinder Head Style Assembled
Damper Spring Included No
Exhaust Port Location Raised
Exhaust Port Shape Round
Exhaust Runner Volume (cc) 129cc
Exhaust Valve Angle 15
Exhaust Valve Diameter (in) 1.880 in.
Exhaust Valves Included Yes
Guideplate Pushrod Size 3/8 in.
Guideplates Included Yes
Heat Crossover No
Intake Port Location Standard
Intake Port Shape Rectangular
Intake Runner Volume (cc) 325cc
Intake Runners 325cc
Intake Valve Angle 24
Intake Valve Diameter (in) 2.300 in.
Intake Valves Included Yes
Lock Style 10 degree
Locks Included Yes
Machined for O-Ring No
Maximum Valve Lift (in) 0.790 in.
Notes Exhaust flange will accept stock-type gasket.
Number of Springs Per Valve Dual
Oiling Style Through pushrod
Outside Diameter of Outer Spring (in) 1.625 in.
Quantity Sold individually.
Retainer Material Titanium
Retainers Included Yes
Rocker Arm Nut Thread Size 7/16-20 in.
Rocker Arm Nuts Included No
Rocker Arm Studs Included Yes
Rocker Arms Included No
Steam Holes Drilled No
Valve Cover Mounting Style Perimeter bolt
Valve Guide Material Manganese bronze
Valve Guides Included Yes
Valve Seat Machine Style 4-angle intake/3-angle exhaust
Valve Seat Material Ductile iron
Valve Seats Machined Yes
Valve Springs Included Yes
Valve Stem Seal Style PC seal
Valve Stem Seals Included Yes
Valves 2.300 Int / 1.880 Exh
Pro 1 BBC 325 Cylinder Head

Every intake port, every exhaust port, every valve bowl and every combustion chamber is 100% CNC machined on special, dedicated Pro 1 castings. Our 5-axis computer controlled machining centers produce compound curves and complex shapes that no human could duplicate with a hand grinder.

Features:

  • Premium alloy: Dart aluminum heads are cast from virgin 355-T61 aerospace alloy for superior strength and integrity.
  • Bolt on compatibility: 2 degree rolled valve angle and standard spacing accommodates all stock accessories.
  • Heart shaped 121cc chambers improve combustion efficiency.
  • CNC machining ensures that every chamber has the same volume so that every cylinder maintains equal compression.
  • Raised spark plug location improves flame travel for a quicker, more complete burn, producing more power.
  • Multi-angle intake seats and radiused exhaust seats greatly improve air flow.
  • Hardened exhaust seats are compatible with unleaded gasoline.
  • Exhaust ports raised .300 to improve flow (requires 1 longer head bolts next to exhaust ports).
  • Spark plug holes are machined for gasketed 3/4 reach plugs.
  • Manganese bronze valve guides ensure long term reliability.
  • All cylinder heads sold individually.
Reviews
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W
Great pricing and quick shipping.  GREAT
S
Awsome service and prices,Thanks alot
M
Easy and fast. Liked the option to pay through Amazon.
H
This store had a lot of products more than most other sites I looked at.  The order was processed quickley and shiped the next day. I will use them again.
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