"Super Stock? Cylinder Heads

High port flow gives great performance now, and more later when additional upgrades are done

Heads are fully assembled with springs and valves

Compression ratios vary depending on cylinder heads chosen, pistons used and engine displacement; see Compression Ratios chart for specifications

79cc heads work great with stock motors for 88 inch to 103 inch motors; 89cc heads work best for motors over 103 inch or with high-compression pop-up pistons

79cc have 1.940 inch intake and 1.575 inch exhaust valve and springs for up to .640 inch lift; 89cc have 2.000 inch intake and 1.605 inch exhaust and .640 inch springs

Heads are machined for compression releases unless noted otherwise (sold separately); S&S rocker boxes required when using S&S compression releases

Do not include rocker arm components, intake manifold or gaskets

Heads include four long headbolts, and reuse four long OEM headbolts

Accept OEM intake manifolds

Made in the U.S.A.

Must use S&S rocker boxes (PART #90-4110) if S&S compression releases are used.

Not compatible with Twin Cooled heads.

Accept OE rocker boxes

Material: Aluminum
Units: Pair
Product Name: Cylinder Head Kit
Base Color: Silver
Model: Super Stock
Color/Finish: Powder-Coated| Silver
Base Finish: Powder-Coated
Displacement: 89 cc
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