Page 163 - 2018 Racecar Engineering Engine Parts and Accessories Catalog

CYLINDER HEADS

Chevrolet Big Block 396-454 (Cont.)

Dart GEN7 Iron Head
Dart GEN7 Iron Cylinder Heads feature high flowing ports, efficient combustion chambers
which greatly improves horsepower and torque to the metric style 8.1L big block Chevy.
Sold bare and compatible with most stock valve train components. Sold individually.
Intake Comb. Port Valve Intake Exhaust
Part No. Description Runner Chamber Type Angle Valve Valve
DRT15400170 Bare- GEN7, 8.1L 306cc 108cc Angle 15 2.190" 1.880"

Dart Heads
Pro 1 CNC Ported Aluminum Head
The first fully CNC-machined production head, available with 335cc or 355cc intake run-
ners, rolled valve angles, raised exhaust ports and fast-burn combustion chambers.
Assembled versions include extra long valves, 1.625" double springs, retainers, locks and seals. Sold individually. DRT19474030
Intake Comb. Port Valve Intake Exhaust
Part No. Description Runner Chamber Type Angle Valve Valve
DRT19474030 Bare, CNC 335cc 119cc Rect 24°/15° 2.300" 1.880"
Assembled, CNC, 1.625" Double Spring,
DRT19474136 335cc 119cc Rect 24°/15° 2.300" 1.880"
275 Lbs. Seat Pressure,
DRT19574030 Bare,CNC 355cc 119cc Rect 24°/15° 2.300" 1.880"
Assembled, CNC, 1.625" Double Spring,
DRT19574136 355cc 119cc Rect 24°/15° 2.300" 1.880"
275 Lbs. Seat Pressure
Dart Big Chief PRO1, 18° Aluminum Head
Dart has applied the PRO1 design concept to the Big Chief in order to help make spread
port technology more affordable for Top Sportsman, Top Dragster, Pro Mod and Pro
Street racers. Excellent with alcohol and nitrous, over 7,000 RPM over 500 CID high flow-
ing as cast ports combined with CNC machined chambers and bowls deliver maximum
power. Sold individually.
Intake Comb. Plug Port Valve Intake Exhaust
Part No. Description Runner Chamber Angle Type Angle Valve Valve
Bare Head, Super Mod Port, 95cc - Titanium
DRT18475030 424cc Angle Rect. 18 2.400" 1.900"
4.600" Bore 100cc - SS

Dart PRO2, 380cc CNC Aluminum Head
Maximum performance, bracket racing, heads up and super classes. Over 7,500 RPM, 500+ +
CID a great head for maximum effort comp and bracket cars. PRO2 24 degree, 380cc
CNC heads have been revised with larger 2.350" intake valves and revised port design for
improved air flow and a substantial horsepower increase. These heads were designed to
make competitive engine building easier and less expensive. Every intake port, every exhaust
st
te consistency.
runner, valve bowl and combustion chamber is 100% digitally CNC machined for the ultimate consistency.
Sold individually.
Intake Comb. Plug Port Valve Intake Exhaust
Part No. Description Runner Chamber Angle Type Angle Valve Valve
DRT19674080 Bare 380cc 124cc Angle Rect. 24° 2.350" 1.850"
DRT19674030 Bare 380cc 124cc Rect 24°/15° 2.300" 1.880"

162 2018 ENGINE BUILDER CATALOG