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Thread: Under drive pulleys

  1. #1
    Join Date
    May 2007
    Location
    Phx ,AZ
    Posts
    218
    I want know if any you guy are running 1000 amp car system? I want install under drive pulleys, but afraid that the under drive pulleys would slow my alternator down to much. When running my system and the e-lite fans it already puts a good draw on my electrical systems.
    Truck 2002 Chevy with
    old setup KB turbo kit MP70 LS1
    New setup stock for now

  2. #2
    Join Date
    Feb 2007
    Location
    Fort Worth
    Posts
    9,578
    <div class='quotetop'>QUOTE(fathead &#064; May 13 2007, 02&#58;39 PM) [snapback]93281[/snapback]</div>
    I want know if any you guy are running 1000 amp car system? I want install under drive pulleys, but afraid that the under drive pulleys would slow my alternator down to much. When running my system and the e-lite fans it already puts a good draw on my electrical systems. [/b]


    If you do the pulleys, make sure you research the % of underdrive ratio for each pulley, and then for both crank and alternator combined. ASP makes a great set of pulleys our vehicles. If you are worried about the electrical system, make sure you get the 25% Harmonic Balancer AND the 23% Alternator. You should not have any problems if you combine the two. If you need a full charge at idle, you can adjust your idle RPM to ~900 to get full charge even when sitting still...


    2000 ECSB 6.0L
    TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's

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