Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled View larger
     Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled

Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled

Buy Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled, Model DRT19574136 online. Engines and Components,Engines And Components

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Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled

CNC-Ported Pro 1 Cylinder Heads for Big Block Chevy

Championship-winning technology in an affordable package. Aluminum heads feature 2° rolled valve angles, .300" raised exhaust ports and fast-burn combustion chambers. Available in five different intake runner volumes for a wide variety of applications, heads are also offered in fully CNC-ported versions to maximize performance. Bare castings have multi-angle valve job and bronze valve guides. Assembled versions have extra long valves, springs, retainers, locks, and seals. Sold individually, bare or fully assembled.

  • Cylinder Head
  • Pro 1 CNC
  • Assembled
  • 2.300 / 1.880 in Valves - 355 cc Intake - 121 cc Chamber - 1.625 in Springs
  • Aluminum
  • Big Block Chevy
  • Sold as Each 
  • MPN: 19574136

Specifications

Brand Dart
Part Number 19574136
Product Line
Pro 1 CNC
Assembled/Bare
Assembled
Chamber Volume
121 cc
Plug Angle
Straight
Intake Runner Volume
355 cc
Exhaust Runner Volume
138 cc
Intake Port Shape
Rectangle
Intake Port Location
Stock
Intake Port Height
2.500 in
Intake Port Width
1.760 in
Exhaust Port Shape
Round
Exhaust Port Location
Raised
Exhaust Port Raised Distance
0.300 in
Exhaust Port Height
1.740 in
Exhaust Port Width
2.000 in
Exhaust Port Bolt Pattern
Stock
Intake Valve Size
2.300 in
Intake Valve Included
Yes
Intake Valve Material
Stainless
Intake Valve Length
5.505 in
Exhaust Valve Size
1.880 in
Exhaust Valve Included
Yes
Exhaust Valve Material
Stainless
Exhaust Valve Length
5.435 in
Valve Spring Included
Yes
Valve Spring Diameter
1.625 in
Valve Spring Number
Dual
Valve Spring Damper
Yes
Valve Spring Retainers Included
Yes
Valve Spring Retainer Material
Titanium
Valve Locks Included
Yes
Valve Lock Material
Steel
Valve Lock Angle
10 Degree
Valve Seal Included
Yes
Valve Seal Style
Positive Stop
Rocker Studs Included
Yes
Rocker Stud Size
7/16-20 in
Pushrod Guide Plate Included
Yes
Guide Plate Pushrod Size
3/8 in
Valve Guide Included
Yes
Valve Guide Material
Bronze
Perimeter Mount Valve Cover
Yes
Valve Seat Included
Yes
Intake Valve Seat Material
Powdered Metal
Exhaust Valve Seat Material
Powdered Metal
Valve Seat Finish
Machined
Combustion Chamber Finish
As Cast
Intake Runner Finish
As Cast
Exhaust Runner Finish
As Cast
Intake Valve Angle
24 Degree
Exhaust Valve Angle
15 Degree
Accessory Bolt Holes
Drilled and Tapped
Material
Aluminum
Color
Natural
Finish
Natural
Quantity
Each

Description

Product code: Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
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Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled

Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled