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QUALITY STRENGTH PERFORMANCE SINCE 1981<br />
Dart 340/370cc oval port Aluminum cylinder<br />
heads have high velocity 340/370cc intake<br />
runners that produce incredible midrange<br />
torque and throttle response. Oval port heads<br />
really “wake up” a big block in marine applications,<br />
or in a heavy car with an automatic<br />
transmission. They also work great in a light<br />
car with a tight torque converter.<br />
Dart big block heads deliver superior performance<br />
without the hassles of welding and<br />
modifying stock castings. We applied proven<br />
Pro Stock technology to produce big block<br />
heads that out perform the competition, yet<br />
Dart heads can be used with most off the shelf<br />
pistons, manifolds, headers, and valve train<br />
components.<br />
Heads are sold individually.<br />
24°<br />
340/370cc<br />
OVAL PORT<br />
QUICK INFO >>><br />
Maximum competition, performance marine and high<br />
torque, 8,000+ RPM, 500+ cubic inches.<br />
RACE SERIES 24° 340cc - ALUMINUM (Oval Port Heads)<br />
INTAKE<br />
PART NO. CONFIGURATION CNC PORTING PORT VOL. VALVES SPRINGS CYL. BORE<br />
16776010 Bare Head Full Port 340cc 2.250"/1.880" 4.500"<br />
16776116 Assembly Full Port 340cc 2.250"/1.880" 1.625" 4.500"<br />
16777010 Bare Head Full Port 340cc 2.250"/1.880" 4.600"<br />
16777116 Assembly Full Port 340cc 2.250"/1.880" 1.625" 4.600"<br />
RACE SERIES 24° 370cc - ALUMINUM (Oval Port Heads)<br />
INTAKE<br />
PART NO. CONFIGURATION CNC PORTING PORT VOL. VALVES SPRINGS CYL BORE<br />
16774030 Bare Head Full Port 370cc 2.300"/1.880" 4.500"<br />
16774136 Assembly Full Port 370cc 2.300"/1.880" 1.625" 4.500"<br />
16775030 Bare Head Full Port 370cc 2.300"/1.880" 4.600"<br />
16775136 Assembly Full Port 370cc 2.300"/1.880" 1.625" 4.600"<br />
HEAD PARTS<br />
Dart has everything you need to assemble a cylinder head:<br />
Titanium or Stainless Steel valves, springs, locks, retainers,<br />
seals, studs, and guide plates.<br />
See page 118.<br />
BIG BLOCK CHEVY<br />
CAST ALUMINUM CYLINDER HEADS<br />
Head part kits - see pages 118.<br />
Uses +.250” long intake valves.<br />
RECOMMENDED MANIFOLDS<br />
FOR 9.800” DECK BLOCKS<br />
41114000 Single Plane 4150*<br />
41124000 Single Plane 4500*<br />
FOR 10.200” DECK BLOCKS<br />
41115000 Single Plane 4150*<br />
41125000 Single Plane 4500*<br />
(*With slight porting modification)<br />
RACE SERIES 24° 340/370cc SPECS<br />
Material:<br />
RMR Cast<br />
Aluminum Alloy<br />
Valve Angle: 24°<br />
Intake Port Volume: 340/370cc<br />
Intake Valve: 2.250"/2.300”<br />
Exhaust Valve: 1.880”<br />
Chamber Volume: 125cc<br />
Intake Port Shape: Oval<br />
Exhaust Port Location: .300” raised<br />
FLOW DATA @ 28” WATER<br />
LIFT INTAKE EXHAUST<br />
.200” 175 135<br />
.300” 238 187<br />
.400” 302 231<br />
.500” 350 280<br />
.600” 385 292<br />
.700” 411 310<br />
.800” 420 319<br />
SHORT BLOCKS TOP KITS BLOCKS HEADS MANIFOLDS CRANKSHAFT ACCESS SBC LS BBC SBF HON COATINGS BILLET<br />
Not intended for sale or use with pollution controlled vehicles.<br />
248.362.1188 / DARTHEADS.COM Connect with us socially, search: DART MACHINERY<br />
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