Chevrolet Performance’s unique Ram Jet 350 combines the classic look of the original Rochester mechanical injection system with the dependability and optimized performance of contemporary electronic port fuel injection.
We’ve taken our proven 350 Small-Block and topped it with an exclusive port fuel-injection system that emulates the look of Chevy’s factory fuel-injection systems from the 1950s and ’60s. It’s the perfect choice for a resto-mod hot rod from the original Rochester era.
We deliver the Ram Jet 350 with the following components to make it easier to install and start:
The bottom end of the engine is our stout 350 with a brand-new block, a hydraulic roller cam, Vortec iron heads, and a pump-gas-friendly 9.4:1 compression ratio.
Connect & Cruise Crate Powertrain Systems provide factory-matched engine-and-transmission combinations that include specially calibrated controllers and wire harnesses designed for retrofit installations in older vehicles. Connect and Cruise packages are available for a wide variety of crate engines which can be paired with an automatic or manual transmission.
Part Number: 12499120
Engine Type: Chevy Small-Block V-8
Displacement (cu. in.): 350Bore x Stroke (in.): 4.000 x 3.480
Block: Cast-iron with two-bolt main caps
Crankshaft (P/N 10243068): Cast-iron
Connecting Rods (P/N 10108688): Powdered-metal steel
Pistons (P/N 12571703): Hypereutectic aluminum
Camshaft Type (P/N 14097395): Hydraulic roller
Camshaft Lift (in.): .460 intake / .481 exhaust
Camshaft Duration (@.050 in.): 196° intake / 206° exhaust
Cylinder Heads (P/N 12528913): Vortec iron; 64-cc chambers
Valve Size (in.): 1.940 intake / 1.500 exhaust
Compression Ratio: 9.1 nominal
Rocker Arms (P/N 12367346): Aluminum roller style
Rocker Arm Ratio: 1.6
Recommended Fuel: 92 octane
Ignition Timing: Base 10° BTDC, 32° Total
Maximum Recommended rpm: 5500
Find everything from the vital data about your engine’s capabilities to how to install it into your build.
Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.
The Manufacturer's Suggested Retail Price excludes tax, shipping and installation. Individual retailer pricing may vary. Please see your local dealer or retailer for details.
The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.