Product Summary

350, Long Block Crate Engine Type, 326 ft./lbs. Torque

  • Engine comes with a 24 Month 50,000 mile warranty
  • Includes provisions for both RH and LH oil dipstick
  • Puts out 290 hp 5100 rpm and 326 lb.-ft. of torque at 3750 rpm
  • Contain a 2-piece rear main seal and has a 1.5:1 rocker arm ratio
  • It is loaded with a four-bolt main bearing block, aluminum pistons, and a hydraulic camshaft

Need To Know

Ineligible for Return

Contains items that cannot be returned


An affordable icon 

The 350/290 Base is an economy-minded alternative to rebuilding Gen 0-type 265-400-cubic-inch Small-Block engines. It’s assembled with all-new, premium components, including a brand-new block with four-bolt main caps—a strength-enhancing feature most original and core 350 engines don’t have.

Powerful & durable 

Like all Chevrolet Performance Small-Block crate engines, it’s built with a cast-iron block. It’s got four-bolt main caps and it’s filled with a tough rotating assembly, featuring aluminum pistons delivering an 8.0:1 compression ratio.

350-290 Base Tech Specs

  • Engine Type: Chevy Small-Block V-8
  • Displacement (cu. in.): 350
  • Bore x Stroke (in.): 4.000 x 3.480
  • Block: Cast-iron with four-bolt main caps
  • Crankshaft: Nodular iron
  • Connecting Rods: Powdered-metal steel
  • Pistons: Cast-aluminum
  • Camshaft Type: Hydraulic flat tappet
  • Camshaft Lift (in.): .450 intake /.460 exhaust
  • Camshaft Duration (@.050 in.): 222° intake / 222° exhaust
  • Cylinder Heads: Iron; 76-cc chambers
  • Valve Size (in.): 1.94 intake / 1.50 exhaust
  • Compression Ratio: 8.0:1
  • Rocker Arms: Stamped steel
  • Rocker Arm Ratio: 1.5:1
  • Recommended Fuel: Regular pump
  • Ignition Timing: 32° Total @ 4,000 rpm
  • Maximum Recommended rpm: 5100
  • Balanced: Internal