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501 Series Performance Type 1 Head Bare No seats-501, Performance, Type-1
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501 Series Performance Type 1 Head Bare No seats

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Product type: Bare Casting

Vendor: AA Performance Products



$145.03

AA 501 Series Casting, It is set up to build the performance Head of your needs. It Comes bare with a 12mm plug hole, and with out Seats or Guides. Giving you the the ability to build any possible combo Street/Drag head you want.

 

The 501 Series Castings come STD with: Increased material at the intake surface giving you the ability to make much bigger ports . A modernized Combustion chamber, for increased head flow & performance. A second Full Fin, so you can Fly cut your heads deeper to achieve almost any desired Head CC volume needed. Blocked off rocker stud bosses, to eliminate the O-ring and stop possible oil leaks. Long reach 3/4 Inch Spark Plugs, to reduce the chance of cracking between the Valve seat and Plug. 

 

Casting: AA 501

Valve Size: N/A

Head Bore: 85.5

Plug Size: 12mm  (Replacement NGK Number is D8EA)