I've seen it mentioned on the forum a few times, the fact that some later versions of the 60-degree V6 used a gear-reduction starter. The stock-replacement starters were having trouble with my engine (dragging and hanging up after the engine warms up). So I decided to try out one of these gear-reduction starters. I used the most powerful one I could find (for the '96-97 3.4 TDC, rated at 1.7kW). I bought the starter on eBay for $79 shipped, no core charge (from Car-Go Starter and Alternator Supply). No other local or online vendor came close to this price. Parts interchange info (from the eBay auction) is as follows:
(2001-91) Buick Park Avenue 3.8L w/ Supercharger
(2001-97) Buick Regal 3.8L w/ Supercharger
(1999-95) Buick Riviera 3.8L
(1997-95) Chevrolet Camaro 3.8L
(1997-96) Chevrolet Lumina, Monte Carlo 3.4L
(1999-95) Oldsmobile 88 3.8L w/ Supercharger
(1995-92) Oldsmobile 98 3.8L w/ Supercharger
(1996) Oldsmobile Cutlass 3.4L
(2001-92) Pontiac Bonneville 3.8L w/ Supercharger
(1997-95) Pontiac Firebird 3.8L
(1996) Pontiac Grand Prix 3.4L
(2001-97) Pontiac Grand Prix 3.8L w/ Supercharger
I haven't verified this info myself, so it might be wise to double-check if you plan to buy one of these starters.
The starter has the Delco Remy logo stamped on it, and looks brand new. Below is a photo of the two starters (gear-reduction on left, and stock-replacement on right).
Not only is the gear-reduction starter physically smaller, but it also weighs less. According to my bathroom scale, the gear-reduction starter weighs 8 lb, compared to the Fiero starter at 13 lb. The smaller size also makes it easier to remove & install. The gear-reduction starter also installed with NO shims. With the stock-replacement starter, I had to use one thick shim plus two thin ones.
I drove around running a few errands today, and the starter had no problem cranking the engine. It fired up almost immediately every time. In the same scenario, the stock-replacement starter would've dragged and possibly hung up. I'm impressed.
If you have a higher-compression engine, and your stock Fiero starter is struggling to crank it, I would highly recommend this gear-reduction starter.
[This message has been edited by Blacktree (edited 05-14-2010).]