For 1985 the GT model was released. It sported the Chevrolet built, Pontiac tuned, multipart fuel injected 2.8L V6 engine.

The high output version of GM's regular 2.8 packed 140 BHP, and a healthy 170 ft-lbs of good old American torque. This new engine perfectly suited the Fiero. Unlike most exotic sports cars, it wasn't "too much" power for the average owner, but would still get you down the quarter mile in 15 seconds. 


The new V6 was teamed up with the Muncie 4 speed transmission. The four cylinder remained basically the same for 1985, except for the 5 speed Isuzu built transmission that became standard on all manual transmission cars. 

 

 

 

 
Model Trans Axle Displ/bhp/Cyl 0-60 MPH 1/4 Mile Top Speed(Kph) Lat Acc(G) Brkng 60-0
 85 GT  4-Sp 3.65 2.8/140/V-6.  8.2 16.2/84.2 119(190.4) 0.81 151
 85 SD-4  4-Sp 4.1

   2.7/180/4         

6.3 14.7/93.0 131(209.6) 0.82 146
 85 GTU  4-Sp 3.66 2.7/275/4 4 12.3/112.00 161(257.6) 1.16

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