501 Series Performance Head W/ seats and guides 40 Intake 35.5 Exhaust black EMPI's conversion drive flanges and

EMPI's conversion drive flanges and stub axles are necessary items to upgrade your suspension to larger C

(2) Inner Wheel Bearings/Races

2:1 with the 70

The Compression ratio is 7

OEM Part#: 211 301 265A

501 Series Performance Head W/ seats and guides 40 Intake 35.5 Exhaust black EMPI's conversion drive flanges andMade from an AA 501 Series Casting, It is set up to build the performance Head of your needs. It comes with Seats 40x35. 5, Guides, with a 12mm plug hole. 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