88 TWIN CAM HEAD UPDATE

        STOCK INTAKE & EXHAUST CAN BE INCREASED FOR BETTER FLOW
        STOCK EX VALUE FOR 88 ENGINES WAS INSTALLED SMALLER
        THEN EARLY 1340 EV ENGINES.
        1340 80 EV ENGINES INTAKE IS 1.840 EXHAUST IS 1.615
        1450 88 EV ENGINES INTAKE IS 1.840 EXHAUST IS 1.565
        1450 & 1550 ENGINE SHOULD HAVE INTAKE 1.940 AND
        EXHAUST 1.650, INCREASE TO VALUE SIZE 5 % TO 10%
        ADVANTAGE.
        MAKES THE MOTOR MORE MECHANICAL SOUND AND
        SENSIBLE.
        USE BLACK DIAMOND ® STAINLESS STEEL VALUES BY
        KIBBLEWHITE PRECISION MACHINING INC.
        INTAKE VALUES # 20-4169  EXHAUST # 20-4170M
        CENTER OF BOTH SEAT HAS TO BE BORED OUT FOR BOTH
        INTAKE AND EXHAUST TO WORK RIGHT.
        I.D. OF SEAT HAS TO BE .100 SMALLER THEN SMALLEST AREA OF
        VALUE SURFACE.
        1/16 TO 1/8 GROOVE IN INTAKE PORT UNDER SEAT WILL IMPROVE
        AIR FLOW.
        MINIMUM OF 9.5 TO 1 COMPRESSION NEEDED.
        LIQUID CC THE HEADS AND DECK AS NECESSARY.
        DECK HEAD .010 AT A TIME, AND RECHECK. 
        IF YOU THINK YOUR HARLEY HAS A NICE SOUND TO IT ON
        HIGHWAY WAIT TO YOU UPDATA IT.