A brand-new engine block is matched with a durable rotating assembly that delivers a pump-gas friendly 9.4:1 compression ratio, as well as a smooth hydraulic roller camshaft that complements power delivery with a great idle quality. The engine's unique intake manifold and plenum is 9-3/4'' tall, offering plenty of clearance to fit under the hood of most vehicles without modifications.

The Ram Jet 350 crate engine kit includes a MEFI 4 engine controller, wiring harness and a detailed instruction guide to make adding this retro-style EFI system a complete DIY project. Some additional components are required, including a high-pressure fuel pump and front accessory drive system.

RAM JET 350 TECH SPECS:

• Engine Type: Chevy Small-Block V-8
• Displacement: 350ci
• Bore x Stroke: 4.000'' x 3.480''
• Block: Cast-iron with two-bolt main caps
• Crankshaft: Cast-iron, 1-piece rear main seal
• Connecting Rods: Powdered metal steel
• Pistons: Hypereutectic aluminum
• Camshaft Type: Hydraulic roller
• Camshaft Lift: .460'' intake / .481'' exhaust
• Camshaft Duration (@.050 in.): 196° intake / 206° exhaust
• Cylinder Heads: Vortec cast-iron, 64cc combustion chambers
• Valve Size: 1.940'' intake / 1.500'' exhaust
• Compression Ratio: 9.4:1
• Rocker Arms: Aluminum roller rockers
• Rocker Arm Ratio: 1.5:1
• Water Pump: Cast-iron, long-style
• Distributor: HEI type
• Spark Plugs and Wires: Included
• Flywheel: 14'' diameter, 168-tooth (11.000''; 11.850'' clutch diameter)
• Recommended Fuel: Premium pump
• Ignition Timing: 34° Total @ 4000 rpm
• Maximum Recommended RPM: 5600
• Balanced: External

GM Warranty

JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

The Chevrolet Performance Ram Jet 350 351HP PFI Crate Engine brings modern drivability to classic small-block performance. Combining retro styling with modern port fuel injection, this engine delivers 351 horsepower and 396 lb-ft of torque—perfect for street rods, muscle cars, and restomod projects that demand reliable power with a clean look.

The Ramjet 350 is based on the proven 350 small-block platform and features Vortec-style cylinder heads, a hydraulic roller camshaft, and a sturdy cast-iron block for long-lasting durability. Its standout feature is the sleek Ram Jet-style intake manifold, which adds visual appeal and optimized airflow, giving you smooth throttle response and strong performance across the RPM range.

What sets this Ram Jet motor apart is its ease of installation. It comes with a fully calibrated MEFI 4 ECM and wiring harness, making it a true plug-and-play solution for builders looking to avoid the guesswork of tuning. Whether you're upgrading a vintage ride or dropping it into a fresh build, you'll appreciate how quickly you can get on the road.

If you've been searching for a reliable, fuel-injected Ramjet 350 that offers the best of both worlds—classic looks and modern performance—this engine delivers. Backed by Chevrolet Performance and engineered for consistency, the Ram Jet 350 offers unmatched value and street-friendly performance for a wide range of applications.

Upgrade your project with iconic power and modern control—this is the crate engine that brings it all together.