Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
DRT19574136 (3 in stock)Dart
Regular price
$3,266.96
Sale
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
| Brand | Dart |
| Part Number | 19574136 |
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Product Line
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Pro 1 CNC
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Assembled/Bare
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Assembled
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Chamber Volume
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121 cc
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Plug Angle
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Straight
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Intake Runner Volume
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355 cc
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Exhaust Runner Volume
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138 cc
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Intake Port Shape
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Rectangle
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Intake Port Location
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Stock
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Intake Port Height
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2.500 in
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Intake Port Width
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1.760 in
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Exhaust Port Shape
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Round
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Exhaust Port Location
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Raised
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Exhaust Port Raised Distance
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0.300 in
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Exhaust Port Height
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1.740 in
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Exhaust Port Width
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2.000 in
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Exhaust Port Bolt Pattern
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Stock
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Intake Valve Size
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2.300 in
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Intake Valve Included
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Yes
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Intake Valve Material
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Stainless
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Intake Valve Length
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5.505 in
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Exhaust Valve Size
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1.880 in
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Exhaust Valve Included
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Yes
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Exhaust Valve Material
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Stainless
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Exhaust Valve Length
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5.435 in
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Valve Spring Included
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Yes
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Valve Spring Diameter
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1.625 in
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Valve Spring Number
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Dual
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Valve Spring Damper
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Yes
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Valve Spring Retainers Included
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Yes
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Valve Spring Retainer Material
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Titanium
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Valve Locks Included
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Yes
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Valve Lock Material
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Steel
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Valve Lock Angle
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10 Degree
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Valve Seal Included
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Yes
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Valve Seal Style
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Positive Stop
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Rocker Studs Included
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Yes
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Rocker Stud Size
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7/16-20 in
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Pushrod Guide Plate Included
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Yes
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Guide Plate Pushrod Size
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3/8 in
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Valve Guide Included
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Yes
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Valve Guide Material
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Bronze
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Perimeter Mount Valve Cover
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Yes
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Valve Seat Included
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Yes
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Intake Valve Seat Material
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Powdered Metal
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Exhaust Valve Seat Material
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Powdered Metal
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Valve Seat Finish
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Machined
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Combustion Chamber Finish
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As Cast
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Intake Runner Finish
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As Cast
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Exhaust Runner Finish
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As Cast
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Intake Valve Angle
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24 Degree
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Exhaust Valve Angle
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15 Degree
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Accessory Bolt Holes
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Drilled and Tapped
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Material
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Aluminum
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Color
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Natural
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Finish
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Natural
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Quantity
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Each
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