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Chevrolet Performance 12681429 GM Base 350/5.7L Truck Motor
Chevrolet Performance 12681429 GM Base 350/5.7L Truck Motor

Chevrolet Performance 12681429 GM Base 350/5.7L Truck Motor

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Chevrolet Performance 12681429 GM Base 350/5.7L Truck Motor
Chevrolet Performance 12681429 GM Base 350/5.7L Truck Motor
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Details

Horsepower:
249 horsepower
Torque:
304 ft./lbs.
Engine Displacement:
350 cu. in.
Compression Ratio:
8.5:1
Camshaft Type:
Hydraulic Flat Tappet
Cylinder Head Material:
Cast Iron
Piston Material:
Cast Aluminum
Crankshaft Material:
Nodular Iron
Warranty:
36 month/100,000 mile
Sold in Quantity:
Each
Rocker Arms:
Stamped Steel
Rocker Arm Ratio:
1.5:1
Block:
Cast-iron with four-bolt main caps

Info

As part of General Motors, Chevrolet Performance is able to offer a wide and diverse range of crate engines and partial engines beyond high-performance Small-Block, Big-Block and LS engines. They are based on regular-production engines and make great swap choices for replacing a tired engine, while also enabling creative engine builders to start with an economical production engine and add their preferred power-building accessories.
The engines are generally delivered fully assembled (minus the induction, ignition and starting systems) and each is backed by a 36-month or 100,000-mile/160,000-km warranty when installed in a recommended application.

All new - not remanufactured! The classic 350 is offered here in the most economical Small-Block engine assembly. Designed to replace production engines used from 1973-1985, it features a durable, yet value-driven, short-block assembly and iron cylinder heads with early-style perimeter hold-downs. Better still, it includes a stronger four-bolt main block and smooth flat tappet hydraulic camshaft.

  • Engine Type: Chevy Small-Block V-8
  • Displacement (cu in): 350
  • Bore x Stroke (in): 4.000 x 3.480
  • Block : Cast-iron with 4-bolt main caps
  • Crankshaft (P/N 93426651): Nodular cast iron
  • Connecting Rods : Forged Steel
  • Pistons (P/N 93422884): Cast-aluminum
  • Camshaft Type (P/N 12364051): Hydraulic flat tappet
  • Camshaft Lift (in): .390 intake /.410 exhaust
  • Camshaft Duration (@.050 in): 195 intake / 202 exhaust
  • Cylinder Heads (P/N 93438649): Iron; 76cc chambers
  • Valve Size (in): 1.94 intake / 1.50 exhaust
  • Compression Ratio: 8.5:1
  • Rocker Arms (P/N 10089648): Stamped steel
  • Rocker Arm Ratio: 1.5:1
  • Recommended Fuel: Regular pump
  • Balanced: Internal

Start-Up / Break-in Procedure (PDF)

GM Crate Engine Warranty

Warranties

36 Month/100,000 Mile

Some parts are not legal for use in California or other states with similar laws/regulations

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