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85-87 V-6 Power Pulley Kits $139.99


Add an under drive power pulley kit to your 1985-1987 V-6 Fiero.


85-87 V-6 power pulley kit with AC

In the past - adding an underdrive crank pulley to an 85-87 V-6 Fiero meant the alternator would not really put out enough amperage for normal use. The 1988 V-6 Fiero featured a higher output alternator and benefits from a power pulley kit. Many who have put an under drive pulley on their 85-87 Fiero V-6 were unhappy with this lower alternator output. To remedy this I have developed a power pulley kit that retains approximately the same alternator output. This kit includes the special smaller OD alternator pulley, idler pulley, smaller hard anodized aluminum crank pulley and the two shorter belts.

Easy to bolt on. Adding this power pulley kit reduces the speed of the water pump and A/C compressor. It eliminates the need to over tighten the alternator to stop belt slippage and squealing. Reducing the speed of the water pump is OK on the 85-87 V-6 Fiero. The water pump will still be sufficient for cooling. This frees up some horsepower. The biggest advantage I found was when using the A/C. By turning the A/C compressor slower it takes much less horse power to run the A/C and the A/C is still more than sufficient to cool the cabin of a Fiero. This kit can also be used on all 85-87 Fiero V-6's without A/C.

The idler pulley is included in every power pulley kit for the 85-87 V-6 Fiero. Without the idler the smaller alternator pulley would certainly promote belt slippage.



Replacement parts:

Idler pulley - Dayco 89007 or equivalent

Power pulley serpentine belt - Dayco 5050430 or equivalent

A/C V-belt - Dayco 15365 or equivalent



Add consider adding my steel alternator reinforcement plate to reduce breakage of the cast aluminum alternator bracket.

  • 85-87 underdrive with A/C:    $139.99
  • 85-87 underdrive W/O A/C:    $132.99




I do not offer free shipping.

Because I use postal flat rate boxes for heavy orders there is no program that can add the proper amount of shipping to every order. So all shipping is added manually by myself after you place your order. That is explained here: Shipping added later explanation 

When you place an order the shipping amount will show $0.00. Soon after you place an order you will receive an email confirmation that shows the amount of shipping that was added to your order.



Shipping:   Shipping is $12.00  (Midwest-USA)

Final shipping cost is determined by weight of the item(s) and distance from Milwaukee, WI. Shipping prices quoted are for items shipped to the Midwest area in the USA. If you are ordering a single item or multiple items the total shipping price is determined after you place the order. I try to keep my shipping prices to a minimum and use Postal Flat Rate boxes whenever I can utilize them for an order. 



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This product was updated on Tuesday 12 February, 2019.
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