Ram Jet 350 350ci Engine 351 HP

Name: Ram Jet 350 350ci Engine 351 HP
Brand: CHEVROLET PERFORMANCE
SKU: 809-19417619
Price: 7567.99 USD
Availability: InStock

^$7,567⁹⁹

Truck Freight

Ships on 10/26/2026

Free shipping

Lowest Price Guarantee

Crate Engine

Ram Jet 350 350ci Engine

351 HP @ 5000 RPM

403 ft/lbs Torque @ 3600 RPM

INSTALLATION NOTES:

Comes with externally balanced, manual transmission flywheel; change to externally balanced flexplate for automatic transmission applications
Installer to supply 12-volt power source and fuel
See installation instructions for fuel pump recommendation
Designed for pre-1976 street vehicles or any off-road vehicle
Not intended for marine applications
IMPORTANT! For a safe, proper, and trouble-free engine break-in, the MEFI 4 computer has a 'green' mode that controls rpm during the break-in period. During this period, engine speed is limited to 4000 rpm in the first hour, 4500 rpm in the second hour, and 5500 rpm in the third hour.

Engine Break-In Procedure

Use conventional or break-in oil (non-synthetic) for the first oil change, be sure to check the oil level in the engine and prime the oil system with an engine priming tool.

Engines with flat tappet hydraulic cams only - Run the engine between 2,000 and 2,500 RPM's, with no-load on the engine for the first 30 minutes. This is critical to break in the camshaft.

Drive the vehicle with varying speeds and loads on the engine for the first 30 miles. Be sure not to use a lot of throttle or high RPM. Run five or six medium-throttle accelerations to about 3000 RPM (40 to 50 MPH), then letting off in gear and coasting back down to 20 MPH. Run a couple of hard throttle accelerations up to about 5000 RPM (55 to 60 MPH), then letting off in gear and coasting back down to 20 MPH.

Let the engine cool and change the oil and filter using conventional (non-synthetic) oil and check coolant level, top off if necessary. Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading. Change the oil and oil filter again using conventional (non-synthetic) oil. Keep an eye on oil level during the first thousand or so miles.

It would be suitable to use synthetic motor oil after the second recommended oil change and mileage accumulation.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Vintage Style and Modern Performance

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. They took their 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.

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.

Part TypeCrate Engine

Product LineChevrolet Performance Ram Jet 350 351HP PFI Crate Engine

BrandCHEVROLET PERFORMANCE

Package Height30.0

Package Width41.5

Package Length41.5

Weight635.0 PG

Part CategoryPerformance Parts

Engine TypeReplacement Engine

Cylinder Head MaterialCast iron

Engine Block MaterialCast iron