Page 162 - 2021-22_EngineCatalogAP

CYLINDER HEADS
Dart LS PRO-1 Aluminum Cylinder Heads
Dart LS PRO-1 Aluminum cylinder heads are cast from virgin 355-T61 aerospace alloy
for superior strength, extra-thick walls for porting, additional material above the ports accommodates valve train upgrades, racing inspired CNC bowl-blended combustion cham- bers improve flame propagation and increased flow. Sold each.
Edelbrock Victor Jr. LS3 Aluminum Cylinder Head
The Edelbrock Victor Jr. LS3 aluminum cylinder head is all-new ground-up design
that incorporates subtle changes for improved air flow and combustion. The large
2.20" diameter intake valve with a canted configuration similar to the GM LT1 Gen
V engine. The unique rectangular intake port design is fully CNC-machined to a
400 cfm peak flow. Fully CNC-machined heart-shaped combustion chambers, and
round, raised exhaust ports for maximum performance. These heads are capable of producing 600+ hp on a LS3 engine using stock rocker arms, intake manifold, and exhaust manifolds. Sold each.
Edelbrock E-CNC LS3 Aluminum Heads
The E-CNC LS3 aluminum cylinder heads are a great general-purpose high-perfor-
mance head for any street-strip LS-based engine. These heads have a high-velocity
port compare to the stock LS3 heads upgrade for any cathedral-port 3.890" bore LS
application. Features include: CNC intake ports, raised (0.125") exhaust ports, .200"
machined spring pockets for use of longer valves and rolled valve angle (13°) for
improved combustion. Can be used with 4- and 6-bolt configurations. Compatible with stock rocker arms. Sold individually.
Trick Flow GenX LS Aluminum Cylinder Head
Trick Flow GenX LS cathedral-port aluminum cylinder heads for GM LS1/LS2
engines are fully CNC-machined with altered valve angle from 15° to 13.5° to decrease the valve shrouding, increase mid-lift airflow, and improve rocker arm- to-valve cover clearance. Material was added at the rocker arm mounting points
for increased stability. Relocated spark plugs in the CNC-profiled heart-shaped combustion chambers to enhance mid-lift airflow for extreme horsepower appli- cations. Emissions legal CARB E.O. #D-747 for 1997-present GM vehicles. Sold each.
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve
Exhaust Valve
Cathedral Ports
DRT11020020
Bare
225cc
62cc
Angle
15°
2.050"
1.600"
DRT11021122
Assembled, 1.290" Single Springs
225cc
62cc
Angle
15°
2.050"
1.600"
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve
Exhaust Valve
LS3 Rectangle Ports
EDE61349*
Assembled, LSX Block, Canted Valve
280cc
69cc
Angled
11°
2.200"
1.600"
* Maximum lift of .680"
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve
Exhaust Valve
LS3 Rectangle Ports
EDE61319
E-CNC 230, Standard LS Block, Complete
230cc
69cc
Angled
13.25°
2.135"
1.550"
EDE61329
E-CNC 230, LSX Block 6 Bolt Head, Complete
230cc
69cc
Angled
13.25°
2.135"
1.550"
Part No.
Description
Intake Runner
Comb. Chamber
Plug Angle
Valve Angle
Intake Valve
Exhaust Valve
Cathedral Ports
TRFTFS-3061T001
LS1, Assembled, Titanium Retainers
215cc
64cc
Angled
13.5°
2.040"
1.575"
TRFTFS-3061T001-C02
LS2, Assembled, Titanium Retainers
225cc
65cc
Angled
13.5°
2.055"
1.575"
Maximum lift of 0.600"
160 2021-22 ENGINE BUILDER CATALOG
LS / LT (GEN-5) SERIES