It wasn't that bad but it failed terribly. 135 hp and 190 tq from a 4.1L V8? and its got a fake carb (TBI ftl). Did the DeVille even have a tach? I think those engines redline at 4500 or 5000 or something crazy low like that.Wikipedia wrote:HT stood for High Technology. For its time, the engine and its electronic control module (ECM) were quite sophisticated. Despite having a throttle body injection system (as opposed to port fuel injection), the HT4100 used an ECM that for the first time incorporated a detailed on-board computer. Every parameter of engine performance could be displayed on the heater control while the car was being driven. The HT4100 also pioneered other design features including removable cylinder sleeves, high operating temperature for emission control (210 degrees, compared to 180 in earlier engines), free circulation of coolant between the block and the heads, and bimetal construction that mounted heat-tolerant cast-iron heads onto a weight-saving aluminum block. The engine had a bore of 3.465 in (88 mm) and stroke of 3.307 in (84 mm), for a total displacement of 4.1 L (≈250 cu in). It initially was equipped with throttle-body fuel injection, with output of 135 hp (101 kW) at 4400 RPM and 190 lb·ft (258 N·m) of torque at 2000 RPM.
The 4.9L Cadillac V8 engines, which are basically the same as that 4.1L but with different bore/stroke, are probably the most common cheap swap in Fieros. 200 hp and 275 tq, it'd be similar to driving a stock MR2 Turbo but with 275 tq and almost no revving. I never liked those Cadillac engines, they rev too low. I've never driven a Fiero with 1 swapped in though, who knows, it might be entertaining if I get the opportunity one day .