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521ci Screw-Blown HEMI Pro Mod Engine

--- Not a real team. This is for example purposes only. ---

--- Image license and credit through Shutterstock, Inc. and Rich Corbett Photo ---

--- Video license Creative Commons (CC) ---

Engine Specs (Read these twice. Then hold onto your wallet.)

  • Engine Builder: Reher-Morrison / Snyder Performance Collaboration

  • Block: AJPE Stage III Billet HEMI

  • Displacement: 521 cubic inches of thunder

  • Heads: Stage 6 billet with titanium valves and titanium retainers

  • Blower: PSI D-Roots Screw (freshened, sealed, NHRA legal)

  • Crank: Bryant billet steel

  • Rods: BME aluminum

  • Pistons: JE custom-cut domes, coated

  • Ignition: MSD Pro Mag 44

  • Fuel System: Rage billet pump, 16-nozzle setup

  • Oiling: Dailey dry sump with 5-stage pump

  • ECU / Data: FuelTech FT600 ready, harness available as add-on

  • Power: If you have to ask, you're not ready. But fine—4,000+ HP on kill mode.

  • Last Dyno: 3 pulls since full rebuild. Ready to run. Built to hurt feelings.

Use Case:

  • NHRA Pro Mod (legal & lethal)

  • Outlaw Pro Mods / No Prep Kings

  • Drag Radial / Radial vs. The World builds

  • "Hold my drink" Exhibition Builds

  • Also fits into boats, trucks, or tractors... if you hate your drivetrain.

Bonus Sauce:

  • Comes with fresh dyno sheet, full build log, and break-in checklist

  • Engine stand included (because it looks good sitting still too)

  • Seller will throw in a custom valve cover signed by “Stevie Fast” Jackson if you pay asking

Seller Notes:

"We’re moving to a twin-turbo setup and our tuner refuses to stop crying every time this thing fires up. Do it justice. Put it in something stupid fast."

Buy it. Bolt it. Blow some minds.

DM or email for videos, build sheet PDF, or shipping quote (crate included).

Racing family

  • Drag Racing Classes
    Pro Mod
  • Item details

    • Item for saleDrivetrain
    • ConditionUsed

    Reviews (0)

      521ci Screw-Blown HEMI Pro Mod Engine

      521ci Screw-Blown HEMI Pro Mod Engine

      $78,500.00

      Dave HobackDave HobackDave Hoback
      $78,500.00
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