The Delta HF Integrale owes much of its existence to the HF 4WD model launched in 1986. Fitted with a 165bhp 2.0-litre engine with turbocharger and overboost, this 'narrow body' car was, in many respects a quasi-Integrale and represenst the value pick for those looking to avoid the big mark ups many vendors slap on a 'true' Integrale. The first of these cars was the 185bhp Integrale. Identifiable by its more aggressive blistered wheelarches, this car was fitted with an intercooler, twin balancer shafts and an integrated electronic injection management system. An instant success despite only being offered in left hand drive guise, the Integrale spawned a number of copycats.
The most significant change in the Integrale's history camne in May 19889 when it adopted a 16-valve cylinder head. This yielded 200bhp and a hydraulic clutch, an ABS braking system, wider wheels and tyres were fitted. Purists loved this car due to the fact that, for the first time, a majority of torque was directed to the rear wheels. This model was replaced in October 1991 by the Integrale Evolution with wider wheel arches and wider track front and rear. The suspension was revised and the brakes and the steering were also beefed up. With 210bhp on tap, the Integrale Evolution was a genuinely rapid car.
Special edition Integrale '5' and '6' cars were launched to celebrate Lancia's success in the 1991 and 1992 World Rally Championships but it wasn't until June 1993 that the next significant change occurred. The Evolution II was launched packing 215bhp with the Final Edition models being sold in November 1994, the Integrale then passing into automotive history with over 44,000 examples sold worldwide.