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tranny in fiero


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I used the tranny and computer out of 89 Buick Lesabre. It is a 440T4. I have a lower<BR>geared 440t4 out of a Bonniville SSE to put <BR>in it. Thanks for the responces I will tread the new water alone on mods probly more commpression and maybe the newer factory cams are more aggressive. I will have to check the Motors spec sheets.<P> <P>buick

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Don't feel bad about treading water alone, you aren't alone. It may be possible the cams in the later models are more aggressive, however, they may not fit. The '88 cam has more lift and less duration than the '89-'90 cam, I have both and I checked them. They will all interchange. The '91 cam uses a different sprocket however it may fit as long as the timing set is changed as well. At some point in later production (maybe the Series II) they changed the location of one of the intakes and exhausts, and also lowered the deck height. You could have a cam reground (I also checked into this), although you may need longer pushrods depending on how aggressive it is (smaller base circle). I understand the '91 version of the transaxle (at least in the Reatta) has the 3.33 gear ratio. I used the Vin L pistons in the Vin C engine to gain just over .6 compression ratio. They are Silvolites and are .050" taller compression height. Air flow calculations indicate about 192 hp. and fuel flow calculates to 199 hp., although that mey be a little high as it runs a little rich, (.9 O2 readings). E-mail me direct for a couple of other possibilies to help the horsepower.

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