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5300 Hemi Cylinder Heads

AJPE 5.300 Bore Space Hemi Head is for large displacement blown or turbocharged engine designs. This enlarged version of AJPE’s famed Muscle Head Hemi engine package can deliver big power in any environment where severe engine use is required. Can be used in Nitro Methane, Blown Alcohol, Nitrous Oxide, and Turbocharged engine combinations.

 AJPE 5.300 Bore Space Cylinder Head

 

The AJPE 5.300 Bore Space cylinder head is part of our hybrid 5.300 Hemi engine platform conceived, designed, and manufactured here at AJPE. Created to survive in the harshest settings, the AJPE 5.300 Hemi can be suited for several engine combinations.

 

Standard Features Include:

  • 123cc   Chamber volume
  • 2.650” Intake Valve (11/32 stem diameter)
  • 1.925” Exhaust Valve (11/32 stem diameter)
  • 50° Intake and Exhaust Seat Angles.
  • Accepts 9/16 diameter, straight wall pushrods
  • Copper alloy Intake and Exhaust seat material.
  • Steel Valve Guides with Bronze liners.
  • O-Ringed Intake ports for optimum seal and ease of assembly.
  • Decks machined for AJPE Jr-Hoops with +.018 protrusion above deck.
  • Accepts 1.670 triple springs. (2.300 installed height with +.100 retainer)
  • 5/8 head studs with steel hat washers installed.
  • All head studs are accessible from the top of the cylinder head.
  • Manifold can remain in place when removing cylinder heads from engine for ease of service.
  • Machined to accept 14mm x .750 reach, “Gasket style” 13/16 hex spark plugs.
  • 4.750 minimum bore diameter
  • High Strength, Made in the USA 6061-T651 Aluminum Billet material.
  • 100% CNC Ported for AJPE Accuracy, Performance & Consistency.
  • Supplied completely finished ready to assemble out of the box.

 

***Requires AJPE 5.300 Hemi Block, Rocker Assembly, Manifold, Cam Core, and Valve Covers***          

 

1.00

 .900

.800

 .700

 .600

 .500

 .400

 .300

 .200

2.650 Intake Valve 486cc   4.750 Bore
(#01 program)
 
624
 
 
615
 
 
602
 
 
583
 
 
534
 
 
459
 
 
369
 
 
276
 
 
161
 
1.925 Exhaust Valve 192cc   4.750 Bore
(#01 program)
 
456
 
 
452
 
 
447
 
 
437
 
 
421
 
 
394
 
 
289
 
 
219
 
 
141
 
 
 
 

 

 

 

 

 

  All flow tests performed on Super Flow 1020 @ 28”, Exhaust tested w/ 2.500” od. pipe.

01N-001-01   5300 Hemi V-8 Billet Cylinder Heads, Program #01. 2.650" x 1.925" Valve diameter, Solid Billet (no water jackets). (pair)