Dart BBC 355cc CNC Pro-1 Head 19574136 121cc R/P 2.30/1.88 Assembled
DRT19574136 (1 in stock)Dart
Regular price
$3,335.99
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
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
|