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A2Speed 5.7L Based HEMI 392 Stroker Crate Engine

Dimensions:48 x 48 x 42
Weight:600.0 lbs
Price: $18,349.99
  • Description
  • Reviews (1)

5.7L to 6.4L, 392 CID HEMI Crate Engine

The 5.7L to 392 CID HEMI crate engine offers a completely forged short block as a base. Upgrading the bottom end with forged internals means that this motor can be made for both naturally aspirated and boosted applications. Removing the stock cast internals, and adding forged connecting rods, pistons, and crank make this engine ideal for nitrous builds as well.

Some Key Features Include:

  • Forged Rotating Assembly
    • Forged Diamond or CP-Carrillo Pistons
    • Forged Molnar Crank
    • Forged Molnar Connecting Rods
  • CNC ported Heads by Thitek
  • Hand Built in the USA
  • New Top of the Line Gasket & Seals
  • Brand New OEM Parts and Accessories
  • 3 Year / 36,000 Mile Warranty

A2Speed 5.7 to 392 HEMI Crate Engine Specs

This spec requires that the stock 5.7L bore and stroke be modified to increase the overall displacement. A standard 3 year / 36,000 mile warranty comes with each engine. Superchargers can be added to your order and preinstalled upon request.

  • Displacement: 392 CID (6.4L)
  • Bore: 3.920"
  • Stroke: 4.080"
  • Boosted Compression Ratio: 9.8 : 1
  • Naturally Aspirated Compression Ratio: 11 : 1
  • Warranty: 36 month / 36,000 mile

HEMI Rotating Assembly Components, Features, & Benefits:

A2Speed only puts top of the line products in our HEMI crate engines. This commitment to high performance components starts in the rotating assembly. The pistons, connecting rods, and crank shafts are all forged. We use CP-Carrillo or Diamond Pistons made of a 2618 aluminum alloy that handle high stress environments incredibly well. Both the Molnar crankshaft, and connecting rods are a forged 4340 material, that has been heat treated and shot peened to improve tensile strength and fatigue life.

  • Molnar Forged Steel Crankshaft
  • Molnar Forged H Beam Bushed Connecting Rods w/ARP 2000 Rod Bolts
  • Standard and Boost Ready Options Available
  • Diamond High Performance Forged 2618 Aluminum Pistons
    • Piston Balance: 1 gram
    • 2618 Alloy for Strength and Durability
    • Duel Pin Oilers
    • Contact Reduction Grooves
    • Accumulator Grooves
    • Forged Side Reliefs
    • FEA Designed Forging
    • ISO 9000 Certified
    • X Style Forging
    • Optional Piston Coatings
  • Diamond High Performance Full Seal Piston Rings
  • Chromoly Wrist Pins w/Wire Locks
  • King Bearings ENSIM Designed Main and Rod Bearings
    • Optional Coatings for Rod and Main Bearings

Creating Your HEMI Short Block:

  • Machine Shop
    • Verify Deck Surface
    • Verify Bore Centerlines
    • Hone Cylinders w/Honing Plate
    • Install Billet Main Caps (Optional)
    • Line Hone
    • Supply and Install Plugs at Oil Squirters
    • Clearance Block / Pistons (If Required)
    • Balance Rotating Assembly
    • Cut Crankshaft for Woodruff Key (If Required)
  • Short Block Final Assembly
    • Paint Block 6.1, 6.4: HEMI Orange, 5.7: Black
    • Install ARP Main Studs
    • Install Crankshaft and Main Bearings, Maintain 0.0003 – 1” Tolerance @ bearings and 0.0005" Runout
    • Cut and Fit Piston Rings
    • Install Pistons and Connecting Rods; Maintain 0.0003 – 1” tolerance @ bearings and 0.0005” tolerance @ piston to cylinder wall.
    • Install Rear Main Seal
Our HEMI Long Block Includes an A2Speed Short Block Plus

  • CNC Ported Heads
  • Replacement Oil Pump
  • Comp Cam & Trend Chromoly Pushrods
  • Cometic Head Gaskets
  • OEM Mopar Lifters & Yokes

A2Speed Thitek CNC Ported 5.7 HEMI Heads (Thitek Bear Heads Optional)

  • CNC Port Heads
  • Performance Valve Job (seats and valves shaped)
  • PSI 1511 Springs
  • Performance Valve Guide Preparation
  • Hardened Steel Retainers
  • Hardened Steel Locators
  • Viton Valve Seals
  • Capable of up to .650” Lift

Our HEMI Crate Engine Includes an A2Speed Long Block Plus

  • Stock OEM Mopar Balancer (ATI Super Dampers are Available)
  • New Intake and Exhaust Gaskets from Cometic
  • Stock OEM Oil Pan (Moroso or Milodon are Available)
  • Stock OEM intake manifold
  • Stock OEM Fuel Rails (A2Speed Fuel Rails are Recommended)
  • Stock OEM Throttle Body (A2Speed Billet 85/90mm Throttle Bodies are Available)
  • Fuel Injectors
  • NGK Spark Plugs
  • OEM Accessories (Dip Stick, Valve Covers, etc.)
Product Rating: (5.00)   # of Ratings: 1   (Only registered customers can rate)

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