BIG BLOCK CHEVY CAST ALUMINUM CYLINDER HEADS 24° 380cc CNC

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Maximum performance, bracket racing, heads up and super classes. Over 7,500 RPM, 500+ cubic inches, a great head for maximum effort comp or bracket cars.

Dart’s PRO2 24° 380cc CNC heads have been revised with larger 2.350” intake valves and a revised port design for improved airflow and a substantial horsepower increase!

These cylinder heads were designed to make competitive engine building easier and less expensive by incorporating the rugged features of our famous Race Series casting into a ready to use, professional quality competition cylinder head. Every intake port, every exhaust runner, every valve bowl, and every combustion chamber are 100% digitally CNC machined for the ultimate in consistency.

Assemblies include Stainless Steel valves, premium springs, locks, retainers, guide plates and seals.

Heads are sold individually

DART MARINE PRO1 CYLINDER HEADS

Features an exclusive Teflon© surface finish to inhibit corrosion and extend the life of the head.

Fitted with Inconel exhaust valves to withstand the extended running time and temperatures typical of marine usage.

PRO2 380CC CNC - ALUMINUM - 2.300"/1.880" VALVES

Head part kits - see page 107.

Uses +.350” long intake valves.

RECOMMENDED MANIFOLDS

FOR 9.800” DECK BLOCKS

41125200 Single Plane 4500

FOR 10.200” DECK BLOCKS 41125300 Single Plane 4500

PRO2 24° 380cc CNC SPECS

Material: RMR Cast Aluminum Alloy

Valve Angle: 24°

Intake Port Volume: 380cc CNC

Intake Valve: 2.300"/2.350”

Exhaust Valve: 1.880"/1.850"

Chamber Volume: 124cc

Intake Port Shape: Rectangle

Exhaust Port Location: .500” raised

FLOW DATA @ 28” WATER

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Dart 340/370cc oval port Aluminum cylinder heads have high velocity 340/370cc intake runners that produce incredible midrange torque and throttle response. Oval port heads really “wake up” a big block in marine applications, or in a heavy car with an automatic transmission. They also work great in a light car with a tight torque converter.

Dart big block heads deliver superior performance without the hassles of welding and modifying stock castings. We applied proven Pro Stock technology to produce big block heads that outperform the competition, yet Dart heads can be used with most off the shelf pistons, manifolds, headers, and valve train components.

Heads are sold individually.