 |
 We
applied the airflow technology developed in our
championship-winning Pro Stock engine program to produce
these state-of-the-art heads. Every intake port, every
exhaust runner, every valve bowl, and every combustion
chamber is 100%
CNC
machined on special dedicated PRO 1 castings. Dart
PRO 1
CNC
heads are professional quality competition cylinder
heads. We sleeve the head bolt columns between the
intake ports to maximize the cross-sectional area at a
critical point in the fl ow
path. We offer a choice of 335cc and 355cc intake ports
so you can match the runner volume to your engine’s
displacement and rpm range. The high-velocity raised
exhaust ports are modeled on our own Pro Stock heads
using airflow concepts that dramatically improve
cylinder scavenging and the engine’s ability to
accelerate quickly. Multi-angle intake valve seats
direct the air-fuel mixture into the chamber like an
airfoil, reducing turbulence and preventing fuel
separation. Fully radiused exhaust seats provide the
smoothest possible transition into the ports for hot
exhaust gases. Improved cylinder scavenging allows more
fuel and air to be burned on the next power stroke. |
|
|
Part # |
Description |
Valve size |
Spring Diameter |
Price* |
|
19474030 |
335 cnc, bare castings |
N/A |
N/A |
$3000.00 |
|
19474136 |
335 cnc assembly |
2.300 x 1.880 |
1.625D |
$3925.00 |
|
19474139 |
335 cnc assembly |
2.300 x 1.880 |
1.650T |
$4150.00 |
|
19574030 |
355 cnc, bare castings |
N/A |
N/A |
$3000.00 |
|
19574136 |
355 cnc assembly |
2.300 x 1.880 |
1.625D |
$3925.00 |
|
19574139 |
355 cnc assembly |
2.300 x 1.880 |
1.650T |
$4150.00 |
|
Assembled Packages Include |
-
2.300 stainless steel intake valves
- 1.880 stainless steel exhaust valves
-
PSI 1224 1.625 valve
springs
- PSI 1047xl valve springs
- 10’ Titanium retainers
- Hardened spring cups
- Pc valve seals
- Rocker studs and guide plates |
|
PRO 1
Valve Upgrades |
|
Manley or Victory
Titanium Intake Valves |
$775.00 |
|
Manley or Victory
Titanium Exhaust Valves |
$775.00 |
|
|
Intake
Manifolds |
|
Part # |
|
41114000 |
9.800 Deck 4150
Carb. |
$395.00 |
|
41124000 |
9.800 Deck 4500
Carb. |
$395.00 |
|
41115000 |
10.200 Deck 4150
Carb. |
$395.00 |
|
41125000 |
10.200 Deck 4500
Carb. |
$395.00 |
|
|
Valve
Covers |
|
Part #
|
|
68000020 |
Dart cast
aluminum |
$164.00 |
|
|
Jesel Rocker system |
|
Part # |
|
KPS 14484 Pro
Series |
$1590.00 |
|
KSS 037570
Sportsman Series |
$995.00 |
|
|
*Prices
subject to change without notice |
