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Underdrive pulley's... good or bad?

Discussion in '1969-1972 K5 Blazer | Truck | Suburban' started by Topdown, Nov 12, 2003.

  1. Topdown

    Topdown 1/2 ton status

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  2. bigmike72

    bigmike72 Registered Member

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    Re: Underdrive pulley\'s... good or bad?

    Downside is that the accessory attached to the underive is spinning slower, so an alternator may put out less power, ac may be less cool etc... On a 350 I don't really think they are worth it. On a 4 cylinder car that is very peaky in terms of power then they are a little more appealing.
     

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