CMW Trucks - 1947 - 1972 Chevy Truck Parts



 

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Fast Burn 385 Base

The Fast Burn 385 Base crate engine is delivered with an aluminum dual-plane intake manifold, HEI distributor, cast iron water pump, damper, and flexplate. You only need to add a carburetor, fuel pump, starter, and plug wires to fire it up. All of these parts can be purchased from your GM Performance Parts dealer.

NOTE: Intended for pre-1977 street vehicles and all off-road vehicles. Not intended for marine use.

Possible Applications

  • Replace that iron-headed original
  • Make that show car a little faster than you first planned
  • Take it drag racing and see what happens

*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.

FAST BURN 385 TECH SPECS:
Part Number: 12496769
Engine type: Chevy small-block V-8
Displacement (cu in): 350
Bore x stroke (in): 4.00 x 3.48
Block (P/N 10105123): Cast iron with 4-bolt main caps
Crankshaft (P/N 12556307): Forged steel
Connecting rods (P/N 10108688): Powdered metal steel
Pistons (P/N 10159436): Hypereutectic aluminum
Camshaft type (P/N 10185071): Hydraulic roller
Camshaft lift (in): .474 intake / .510 exhaust
Camshaft duration (@.050 in): 208'c1 intake / 221'c1 exhaust
Cylinder heads (P/N 12464298): Fast Burn aluminum; 62cc chambers
Valve size (in): 2.00 intake / 1.55 exhaust
Compression ratio: 9.6:1
Rocker Arms (P/N 10089648): stamped steel
Rocker arm ratio: 1.5:1
Recommended fuel: 92 octane
Ignition timing: 32'c1 total @ 4000 rpm with vacuum advance disconnected
Maximum rpm: 5800

Chevy Performance Fast Burn 385 Base engine image

Part #: 12496769

Fast Burn 385 Base Engine

Fast Burn 385 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.
  • Comes with 12.75" externally balanced automatic transmission flexplate; change to externally balanced flywheel for manual transmission applications. See chart on page 171.
  • Intended for pre-1977 street vehicles or all off-road vehicles.
  • Not intended for marine use.
  • Some assembly required.