ATK Engines HP31 High Performance Crate Engine 1987-1995 Small Block Chevy TBI 350ci / 292HP / 373TQ
059-HP31
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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.
Please CLICK HERE for ATK Core Return Process
NOTE:
- Core return can be any Small Block Chevy 350ci engine, except 1992-1997 LT1 style engines
Engine Specifications
This 350 engine is designed for 1987-1995 GM trucks with throttle body injection (TBI). ECM needs a chip burned to run properly.
- Horsepower: 292 hp
- Torque: 373 lb/ft
Block Information:
- Seasoned OE 4 bolt main 1pc seal 1987-1995
- Bore/Stroke: 4.040" x 3.480"
- Displacement: 350ci
Rotating Assembly:
- Crankshaft: OE Reground 1 piece seal crank
- Balance: External rear, internal front
- Rods: OE powder metal 5.7"
- Compression Ratio: 9.1:1
- Pistons: Hypereutectic
- Rings: Moly
Camshaft Specs:
- Camshaft: Hydraulic roller
- Cam Duration @ .050": Intake 198 / Exhaust 210
- Cam Lift: Intake .435" / Exhaust .462"
- Lobe Separation Angle: 116lsa
- Timing Chain: Double roller
Cylinder Head Information:
- Cylinder Heads: OE TBI cast iron
- Combustion Chamber: 67cc
- Intake Runner: 165cc
- Valve Size: 1.94" Intake / 1.50" Exhaust
- Rocker Arms: Stamped steel 1.5
Oil Pan Information:
- Oil Pan: Rear sump 5qt (not for Chevelles with steering behind crossmember, some Corvettes, and 1962-1967 Chevy II's)
- Oil Pump: Melling standard volume
Recommended Components
- Balancer: 8" internal balance
- Flexplate/Flywheel: External balance 1987-Up
- Intake Manifold: OE or Edelbrock TBI Intake #350-3704
- Spark Plugs: Autolite #417-605
- Spark Plug Wires: Factory Replacements
- Water Pump: OE
Disclaimer: The parts listed are ATK's recommendations of parts to be used to obtain the power figures listed. Power figures can vary based on parts used by the end user. Some modifications to the vehicle may be required using these and or other aftermarket parts.
Engine Break-In Procedure
Use or break-in oil or conventional (non-synthetic) 10w30 oil with zinc additive for the first 500 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. It is best to avoid long periods of idling during this period. Check the engine oil and coolant levels daily.
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. Let the engine cool down completely and repeat process 2-3 more times. Do not idle the engine for any extended period at this time, this is critical to break in the camshaft.
At 500 Miles change the engine oil and filter using conventional (non-synthetic) oil with a zinc additive. Check fuel and ignition settings, adjust valves (where applicable). Drive the next 500 miles normally, without high RPM's (below 5000 RPM), hard use, or extended periods of high loading or long periods of idling.
Change the oil and oil filter again at 1,000 miles. Continue using conventional (non-synthetic) oils and zinc additive, until about 4,000 miles. At that point, you may run a quality 10w30 synthetic oil if you choose. Use of oil with zinc or a zinc additive for the life of your engine is recommended.
Specifications:
Will this engine work with a carb ? the one i have now was converted
Can I install this in my 1983 Chevy 4x4 k10 with a 700r4 transmission? I plan on running the Holley sniper 2 efi with my msd ignition. I currently have a small block 350 with a serpentine belt setup and want to make sure this engine will bolt directly In.
Can i run the engine with out having the chip burned for the first 100 miles or so till i get the chip burned? Will it damage the engine to run with out ?
Will it fit a 93 c1500 tbi
Does that engine fit a 1995 Chevy suburban 4 wheel drive k1500
Can you ran a carburetor on this engine?
The OE water pump? Reverse or clockwise rotation for this motor ?
Just to get clarification, will my OEM TBI chip need to be replaced with a custom-burned chip in order to have this engine run properly? Or is this just recommended for optimal performance?
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Tools:
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Electrical Cords
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