The newest most advanced offering to come out of Dart so far this year:
The new Dart Pro 2 cnc ported cylinder head for Big Block Chevy. These heads flow over 440 cfm intake and over 325 cfm exhaust, these are assembled in house with our pro series valves that flow more on these heads than all others tested, then we use the Manley nextek valve springs with Manley lightweight titanium retainers, and comp 10* valvelocks spring cups and valve seals round out the assembly. These heads are now machined out of the thicker stronger race series castings unlike the earlier heads ported in the dart pro 1 castings. These heads feature the latest in dry and wet flow technology, with very agressive ports and chambers to get the most out of your conventional headed Big Block Chevy. No B.S. no games, only a few sets in stock assembled for shipping. the shipping to the 48 states is 50.00. all others feel free to contact us for a shipping quote. call with any questions 702-567-3035

SPEC SHEET FOR HEADS BELOW:

Dart
CNC Ported 380 BBC Aluminum Cylinder Head

Part# 19600000
Material: 355T6 alum alloy
Comb Chambers: 124cc
Intake Valve Dia: 2.300”
Intake Port Dim: 1.7740”w x 2.490”h
Int Port Location: Stock
Intake Gasket: Dart 65123100
Exh Valve Dia.: 1.880”
Exh Port volume: 164cc
Exhaust Port Dim: 2.112”w x 1.840”h
Exh Port Location: Raised .500” Std bolt pattern
Exhaust Gasket: Fel-Pro 1412
Exhaust Head Bolts: 1” longer than stock (4) ea.
Flow, Intake: @.800 lift/28” 420cfm intake 330cfm exhaust
Head Bolts/studs: Bolts – ARP# 135-3603 Studs – ARP# 235-4103
Manifold: Rect. Port Dart (opening - 1.575”x 2.250”) 6.25” tall
Milling: Min. 110cc. (.005” = 1cc) Flat mill only.
Pistons: Aftermarket pistons.
Push Rod length: Avg. +.200” / +.250” Should always measure

Stock length Int. = 8.275” / Exh = 9.250”
Push Rod Guide Plate Dart adjustable
Retainers: 1.625” - Titanium (10°)
Spark Plug: .750” reach, gasketed. Autolite AR3933
Spring Cups: 1.625” - .035 cup
Spring Pockets 1.740” OD for 1.625” cup (.030” deeper max)
Springs: Our Assembly: 1.625D = 250# @ 2.000” / .790” max Vasco-Jet H-11
Valve Angles: Int - 24°, Exh - 15° (Rolled 2°) 4° cant
Valve Length: Int - 5.475” (+.250) Exh - 5.435” (stock)
Valve Stem Dia: .3415” -11/32”
Valve Train: Accepts screw in studs and guide plates, Jesel, and T&D shaft system
Valve Guides: 1/2” OD Mag - bronze Cut for .530” PC seals (.002” press)
Valve Guide length: Int - 2.100” Exh - 2.250”
Valve Guide clearance: .0014” - .0021” (with our .3415 dia. valve stem)
Valve Guide Spacing: Exh moved .045” away from Int
Valve Seats: Ductile Iron, .006” press (TIR .004)
Valve Seat dim. Int. - 2.450” x 2.000” x .375” Exh - 2.000” x 1.600” x .375”
Valve Seat angles: Int = 32° - 45° - 60° - 70°-80° Exh = 37° - 45° - radius
Stud Girdle: #64110001
Valve Covers: Part# 68000020
Torque: Head Bolts = 70 ft/lb Dart inner head studs 3/8-7/16 = 50 ft/lb

Rocker Studs = 45 ft/lb

Manifold = 35 ft/lb
Block Use: Mark IV, Gen V, Gen VI with proper head gasket
Weight: 36.5 lbs

3/18/2008

Seller Phone Number: 702-567-3035 dynoflo2@msn.com please send inquiries here thanks

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Item Location: HENDERSON, NV Get Directions To This City

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