350ci Crate Engine
ATK Core Return Process
JEGS and ATK appreciate your business and want to ensure that your core return is as smooth as possible.
- Core return can be any 1967-2000 Small Block Chevy 350ci engine, except 1992-1997 LT1 style engines
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. Every engine is issued a certificate for testing compression, oil pressure, and water temperature. JEGS crate engines feature a 36 month/unlimited mileage warranty.
This engine is designed as a universal, budget replacement engine for most GM vehicles or can be retrofitted into virtually any vehicle or hot rod. Producing up to 195hp using an OE carburetor, intake and exhaust manifolds, this engine can make up to 260hp with headers, performance intake manifold and a 4-bbl carburetor.
- Factory Specs
- Horsepower: 195
- Torque: 300 lb/ft
- Engine with Performance Accessories
- Horsepower: 260*
- Torque: 300 lb/ft*
*Tested using a performance dual plane intake manifold, 670cfm carburetor, headers, and a HEI distributor.
- 1987-1995 seasoned OE block
- 2 bolt main
- 1 piece rear main seal
- Passenger side dipstick
- Displacement: 350ci/5.7L
- Crankshaft: OE reground cast 1 piece seal
- Balance: External rear (requires 1987-Up style flexplate or flywheel), internal front
- Rods: OE reman powder metal 5.7"
- Compression Ratio: 8.6:1
- Pistons: Cast
- Rings: Moly
- Camshaft: Hydraulic flat tappet
- Cam Duration @ .050": Intake 194 / Exhaust 202
- Cam Lift: Intake .390" / Exhaust .410"
- Lobe Separation Angle: 112
- Timing Chain: Single roller
Cylinder Head Information:
- Cylinder Heads: Pre-1986 cast iron
- Combustion Chamber: 76cc
- Valve Size: 1.94" Intake / 1.50" 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
- Timing Set
- Cylinder Heads
- Valve Covers
- Timing Cover
- Oil Pan
- Oil Pump & Pickup Tube
Notes: If replacing a pre-1987 (2 piece rear main seal) engine, a new external balance flexplate/flywheel for 1987-Up style engines will be required. This engine will also require a passenger side dipstick (1980-Up vehicles). Driver's side dipstick will not work (Pre-1979). This engine has provisions for a mechanical fuel pump.
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.
Does this engine use 4 or 5 quarts of motor oil?
What octane does this engine require?
Is this an ATK engine
Will this engine bolt up to 83 Chevy C30 with HD 4 speed manual transmission (granny low type). This is an ex forest service truck and bare bones as to add-ons for smog and such.
Will this fit my 77 Chevy C10, and will I need to swap out the flex plate?
Will this fit an 84 olds 98?
Will it fit my 77 Nova 4 door?
Will this 059-7353 engine fit a 1985 Chevy k10 truck with manual transmission?
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.