TBI Truck 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 must be a 1987-1995 350ci TBI Truck/SUV engine
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.
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.
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.
This engine was designed as a direct replacement for 1987-1995 Chevy & GMC pickups, SUV's, and van applications. These vehicles featured a 350 ci, 5.7 Small Block Chevy with TBI (throttle body injected) EFI system, and swirl port heads. Producing up to 210 hp in factory spec, this engine can also be retrofitted into an older car with a performance carburetor to produce up to 250 hp.
- Factory Specs
- Horsepower: 210 hp
- Torque: 300 ft.-lbs.
- Horsepower: 250 hp*
- Torque: 350 ft.-lbs.*
*Carbureted engine was tested using a performance dual plane intake manifold, 650 cfm carburetor, and an HEI distributor.
- 1987-1995 seasoned OE block
- 2-bolt main
- 1 piece rear main seal
- Passenger side dipstick
- Displacement: 350 ci, 5.7L
- 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: Hydraulic flat tappet
- Cam Duration @ 0.050 in.: Intake 194 / Exhaust 202
- Cam Lift: Intake 0.390 in. / Exhaust 0.410 in.
- Lobe Separation Angle: 112 lsa
- iming Chain: Single roller
Cylinder Head Information:
- Cylinder Heads: 1987-1995 cast iron swirl port
- Combustion Chamber: 76 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
- Timing Set
- Cylinder Heads
- Valve Covers
- Timing Cover
- Oil Pan
- Oil Pump & Pickup Tube
Note: Does not have mechanical fuel pump provisions.
What flywheel and balancer do you recommend using with this motor
Will this motor work in my 1986 c10 and can I run it on e 85
Will this block work in a 4x4? My 1990 350 block that is bad has an oil filter that mounts 90 degrees to block and angled 45 degrees outwards. I see this block mounts oil filter facing directly down. Will the front driveshaft have clearence?
Will this work with my 93 Chevy fuel injected?
How do i tell what trans mission i need for this motor. Will a 92 700r4 from a rs camaro work or do i need the 4l60e. It being a truck motor
is there a core return or charge with this long block? Do you require a certified shop to install for the warranty? What state would this long block be shipped from ? How long would it take to arrive to Utah?
What is the difference between a truck engine and a regular engine in a car
How do I register this motor with the manufacturers for warranty purposes. Recieved no paperwork.
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.