Chevy HT383E Crate Motor

HT383E's are direct replacement engines for Chevy half ton trucks like the Silverado, Suburban, Tahoe, Sierra and Yukon. It is an emissions legal replacement for the L31 5.7 liter engine in those models. Just add your intake manifold, throttle body, exhaust manifolds and other accessories to the HT383E long block plus and you're set to run. Keep your half ton truck pulling and cruising with this great performer!

Possible Applications

  • Give your '96-'99 Chevy's SUV or Truck new energy!
  • Provides great towing

*Applications have not been validated. They are merely suggestions of how you might enjoy your GM Performance Parts crate engine. Some applications may affect engine warranty. See specific warranty information. Some applications may not be emission legal; check state and local ordinances.

Part Number: 17800393
Engine type: Chevy small-block V-8
Displacement (cu in): 383
Bore x stroke (in): 4.00 x 3.80
Block (P/N 88962516): Cast iron with 4-bolt main caps
Crankshaft (P/N 12489436): 4340 Forged steel
Connecting rods (P/N 12497624): Heavy-duty PM steel
Pistons (P/N 12499103): Hypereutectic aluminum
Camshaft type (P/N 14097395): Hydraulic roller
Camshaft lift (in): .431 intake / .451 exhaust
Camshaft duration (@.050 in): 196'c1 intake / 206'c1 exhaust
Cylinder heads (P/N 12558060): Vortec iron; 64cc chambers
Valve size (in): 1.94 intake / 1.50 exhaust
Compression ratio: 9.1:1
Rocker arms (P/N 10089648): Stamped steel
Rocker arm ratio: 1.5:1
Water pump (P/N 88894341): Cast iron
Recommended fuel: 87 octane
Max Recommended RPM: 5,000
Balanced: Extrnal

Chevy HT383E engine

Part #:17800393

Chevy HT383E dyno image

Installation Notes

  • NOTE: Distributor with melonized steel gear MUST be used with long blocks and partial engines with steel camshafts, or engine damage will occur. We recommend HEI distributor P/N 93448806.
  • Requires addition of carburetor, ignition and starter (not included).
  • Rochester Quadrajet or Holley 750-cfm carburetor recommended.
  • Comes with 12.75" automatic transmission flexplate. Requires externally balanced flywheel for manual transmission.
  • Has right-side oil dipstick.
  • Intended for pre-1977 street vehicles and all off-road vehicles.