Chevrolet Performance 350 HO Base Crate Engine


  • 333 hp & 381 lb.-ft.
  • Vortec cylinder heads
  • Chrome valve covers & timing cover
  • Add your own intake, carb., etc.

Shipping is free, but there is a delivery fee for residential addresses.

SKU: 19433030 Categories: , Tag:

Built from all new parts – not remanufactured – this high output classic Chevy 350 is the perfect long block for an engine builder on a budget. With a reliable 333 hp and 381lb.ft. of twist, the Karl Kustoms 350 HO crate engine is the undisputed champ for getting the most bang for your buck. But budget doesn’t mean cheap, this time-tested motor comes with:

  • Chevy four-bolt block with a strong nodular iron crankshaft and aluminum pistons
  • High-lift camshaft based on the Corvette 327 engine for a distinctive and aggressive idle
  • Iron Vortec heads fitted with 1.94/1.50-inch valves
  • Chrome valve covers

The 350 HO makes its peak 381 lb.-ft. of torque at a very usable 3,800 rpm and it pairs well with any number of transmissions you can throw at it, like the SuperMatic 4L75-E Four Speed.

What’s Included

  • Fully GM assembled long block
  • Chrome Steel Valve Cover with Chevy Bowtie Logo
  • Oil pump, pick-up, and oil pan
  • Front timing cover
  • Passenger Side RH Oil Dipstick and Tube

Important Information

  • Designed for pre-1976 street vehicles or any off-road vehicle
  • Chevrolet Performance Crate Engines include a 24-month or 50,000-mile limited warranty.
Weight 298 lbs


19210007, 19420878, 19431609

350 HO Base Crate Engine

333 hp @ 5,000 rpm / 381 lb.-ft. @ 3,800 rpm

  • Engine Type: Chevy Small-Block V-8
  • Displacement (cu. in.): 350
  • Bore x Stroke (in.): 4.000 x 3.480
  • Block (P/N 10105123): Cast-iron with four-bolt main caps
  • Crankshaft (P/N 14088526): Nodular iron
  • Connecting Rods (P/N 10108688): Powdered-metal steel
  • Pistons (P/N 12514101): Cast-aluminum
  • Camshaft Type (P/N 24502476): Hydraulic flat tappet
  • Camshaft Lift (in.): .435 intake / .460 exhaust
  • Camshaft Duration (@.050 in.): 212° intake / 222° exhaust
  • Cylinder Heads (P/N 12558060): Vortec iron; 64-cc chambers
  • Valve Size (in.): 1.940 intake / 1.500 exhaust
  • Compression Ratio: 9.0:1 nominal
  • Rocker Arms (P/N 10089648): Stamped steel
  • Rocker Arm Ratio: 1.5:1
  • Water Pump (P/N 88894341): Cast iron, long-style
  • Flexplate (P/N 14088765): 12.750″
  • Recommended Fuel: Premium pump
  • Ignition Timing: 32° Total @ 4,000 rpm
  • Maximum Recommended rpm: 5100
  • Balanced: External

Click here to download installation information.

Chevrolet Performance Crate Engines carry a 24 Month or 50,000-mile warranty (whichever comes first) when installed by a qualified independent service center. Chevrolet Performance Crate Engines also come with a 30-day start-up warranty (parts only).

There are some additional limitations on the warranty – please see the official GM warranty documentation for more information.


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Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to