Noonan Hemi, 4.9 Hemi, Noonan Hemi, Proline Racing Engines, AJPE, Brad Anderson Hemi, Noonan, 4.6 Hemi, Noonan 4.8 Hemi, Pro275, Radial Vs World, Outlaw Promod

4.8 Noonan Hemi H2O

Our 4.8 Noonan Hemi H2O package utilizes the championship winning Noonan billet block and heads which have consistently proven to dominate Top Alcohol and Promod race categories internationally. With back to back proven consistency and reliability the Noonan 4.8″ Hemi is the ultimate powerplant for Turbo, Screw Blown, and Roots Blown, Alcohol racers looking to accelerate their race program.

Please contact us to obtain a custom quote for you racing program

Our 4.8 Noonan Hemi H2O Engine includes, but not limited to the following machining/blueprinting:

  • Balancing
  • CNC Block Machining
  • Block receiver grooves
  • Top fuel hoop heads
  • Cylinders double torque plate diamond honed for correct piston to wall clearance and surface finish
  • Full surface finish report on deck, head and cylinder wall finish
  • Engine fully blueprinted
  • Heads CC’d and valve job
  • Valve spring heights set up
  • Pushrod length
  • Rocker geometry
  • Engine Break-in and heads re-torqued

Short Block Components:

  • Noonan 4.8 BS H2O Hemi block – Ideal for Drag & Drive.
  • Clevite V-Series Main Bearings
  • Clevite V-Series Rod Bearings
  • 70mm Roller Cam Bearings
  • Callies, Winberg or Bryant Racing Billet Crankshaft
  • MGP, GRP, CP Carrillo, or R&R Billet Aluminum Rods
  • Custom ROSS Racing Pistons

Long Block Components:

  • Noonan Promod Hemi 4.8 cylinder heads
  • Noonan valve covers
  • ARP Head Studs
  • Titanium Exhaust valves
  • Titanium Intake valves
  • Clarke Copper Cylinder Head Gaskets
  • Custom camshaft 70mm
  • JHE/PSI Valve Springs
  • Custom Tool Steel Manton Push Rods
  • RCD Gear Drive with auxiliary drive
  • Jesel Keyway lifters
  • Manton Billet Rocker Arms
  • Oil pump & Custom Oil Pan
  • Noonan Billet Intake Manifold & Fuel Rails


 – ACE Racing Engines makes no guarantee regarding operation of the Goods in settings or in ways that may be illegal or highly regulated, including those regarding smog and emissions. Please refer to your State/Country guidelines. 

 – Due to the custom nature of our builds, the product images shown here are for illustration purposes only and may not be an exact representation of the product.