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BBK Pulley & Serpentine Belt Question

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  • #1

    BBK Pulley & Serpentine Belt Question

    Hey all,

    I recently purchased a BBK crankshaft pulley, and I have some questions.

    Do I need a new length serpentine belt? If so.... I have a few more q's

    1) How long is the stock serpentine belt for a LT1?
    2) What should the new length be with the pulley installed?

    Thanks!
    1997 Trans Am WS6 Black M6
    370 RWHP / 352 TQ
    CC306 & Comp behives, LT1 Extreme Duty timing set, 1.6 RR's, CSR Elec Water Pump, Pacesetter LT's & ORY, GMMG w/ Ovals, K&N, Air Foil, TB Bypass, !AIR, !EGR, !CAGS, 160 deg thermo, LT4 KM, PCM tuning by Total-ReCal, March Pullies, Pro 5.0, 4.11 gears, LS1 alum DS, BMR strut tower brace, UMI SFC's, LCA's w/relo brackets & panhard
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  • #2
    You might be able to still use it depending on how much smaller the pulley is. The pulley tensioner might be able to take up the slack. When I installed my March pulley they provided the part number for what the new belt needed to be.
    97 TA, M6, JBA ceramic coated headers, Borla Cat-back exhaust, 1.6 RR, 160 Thermo, LT4 knock sensor, CAI, Bils, Hotchkis all around, GT rotors, B&M shifter, Magnecor wires, Granatelli MAF
    In the shop LT4 Intake and heads.

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    • #3
      what is the part number for the march one
      1995 formula firebird
      mods k&n fipk ,flowmaster catback, 52mm throttle body, crane hi-6 with lx92 coil,mad dog tranny with trans cooler

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