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Vehicle Info NeededJEGS Replacement Crate Engine for 1996-2000 for 5.7 Vortec Long Block Chevy
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JEGS
Part Number : 555-210009
JEGS
Part Number : 555-210054
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ATK Core Return Process
JEGS and ATK appreciate your business and want to ensure that your core return is as smooth as possible.
Please CLICK HERE for ATK Core Return Process
NOTE:
- Core return must be a 1996-2000 350ci Vortec Truck/SUV engine
Engine Specifications
Power Ratings:
- Factory Specs
- Horsepower: 255 hp
- Torque: 330 ft.-lbs.
- Carbureted
- Horsepower: 290 hp*
- Torque: 375 ft.-lbs.
*Carbureted engine was tested using a performance dual plane intake manifold, 670 cfm carburetor, and an HEI distributor.
Block Information:
- 1996-2000 seasoned OE block
- 2-bolt main
- 1-piece rear main seal
- Passenger side dipstick
- Displacement: 350 ci, 5.7L
Rotating Assembly:
- Crankshaft: OE reground cast 1 piece seal
- Balance: External rear, internal front
- Rods: OE reman powder metal 5.7 in.
- Compression Ratio: 9.6:1
- Pistons: Cast
- Rings: Moly
Camshaft Specs:
- Camshaft: Hydraulic roller
- Cam Duration @ .050 in.: Intake 191 / Exhaust 194
- Cam Lift: Intake 0.414 in. / Exhaust 0.428 in.
- Lobe Separation Angle: 112 lsa
- Timing Chain: Single roller
Cylinder Head Information:
- Cylinder Heads: Vortec cast iron
- Combustion Chamber: 64 cc
- Intake Runner: 165 cc
- Valve Size: 1.940 in. Intake / 1.500 in. Exhaust
- Rocker Arms: Stamped steel 1.5
Oil Pan Information:
- Oil Pan: Black 4 quart
- Oil Pump: Melling standard volume
Long Block Includes
- Short Block
- Camshaft
- Timing Set
- Cylinder Heads
- Valve Covers
- Timing Cover
- Oil Pan
- Oil Pump & Pickup Tube
Notes: Does not have mechanical fuel pump provisions.
Engine Break-In Procedure
Use conventional or break-in oil (non-synthetic) for the first 600 miles of operation. Do not drive for long periods at any single speed, always vary your speed. Do not tow a trailer or put other heavy loads on the vehicle. Check the engine oil and coolant levels daily.
At 600 Miles change the engine oil and filter using conventional (non-synthetic) oil. Check fuel and ignition settings; adjust valves (where applicable).
After the first 5,000 of service synthetic engine oil may be used. Follow your vehicle owner’s manual for service intervals.
Start Fresh with a Drop-In Replacement Crate Engine
JEGS crate engines are reverse engineered to create a product that has better-than-new quality. Reverse engineering allows any factory original defect to be found and removed; saving you time and money by keeping your vehicle out of the shop and on the road. Engines are factory checked after assembly to ensure proper operation. JEGS crate engines feature a 36 month/unlimited mileage warranty.
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This engine was designed as a direct replacement for 1996-2000 Chevy & GMC pickups, SUV's, and van applications. These vehicles introduced the L31 5.7L small block featuring Vortec cylinder heads that were developed for maximum power and efficiency. Producing up to 255 hp in factory spec, this engine can also be retrofitted into an older car with a performance carburetor to produce up to 290 hp.
Restore your truck’s original power—or give it a serious upgrade—with the JEGS Performance Products Vortec 350ci/5.7L Crate Engine, designed specifically for 1996–2000 Chevy trucks. Built to OEM specs with premium components, this engine is the perfect solution for replacing a worn-out motor or powering up your next build with confidence.
Crafted with a cast iron block and cylinder heads, this engine delivers the durability you expect from a genuine 5.7L Vortec engine. It features a hydraulic roller camshaft, optimized for smooth power delivery, better efficiency, and improved throttle response. Whether you use your truck for work, towing, or everyday driving, this engine is designed to perform reliably under pressure.
Installation is made easy thanks to its direct-fit compatibility with factory components, giving you less hassle and more time on the road. With the power and reliability of the legendary 5.7 Vortec, you’ll feel the difference as soon as you fire it up. This crate engine is ideal for those looking to restore factory performance while enjoying modern reliability and engineering upgrades.
If you're building a dependable daily driver or reviving a classic truck, the Vortec 350 from JEGS offers peace of mind with every mile. It’s backed by a 3-year/100,000-mile limited warranty and supported by JEGS’ decades of performance experience.
Get your Chevy running like new—order the JEGS 350ci/5.7L Vortec Crate Engine today and bring your truck back to life.
