1985 Lancia Delta S4 Stradale

Built as a road going version of Lancia’s Group B contender, the Delta S4 Stradale possessed all the radical traits of the race car it was made from. This included the interested dual-stage induction which included both a supercharger and turbocharger. Although detuned for the sanity, this system catapulted the Group B version to 600 bhp and zero to sixty in less than two seconds.

Two hundred S4 Stradales were required and built for homologation, and no doubt many were taken from the road right back onto into motor sports. Very few cars remain unmolested; especially considering a removing the air restrictors and a changing a few adjustments doubled the available power.

1985 Lancia Delta S4 Stradale 1985 Lancia Delta S4 Stradale

 

In Detail

submitted byRichard Owen
engineInline-4
positionMid, Longitudinal
aspirationDuel Stepped Volumex Supercharger & KKK Turbocharger
valvetrainDOHC, 4 Valves per Cylinder
fuel feedI.A.W. Weber Marelli Electronic Fuel Injection
displacement1759 cc / 107.3 in³
bore88.5 mm / 3.48 in
stroke71.5 mm / 2.81 in
compression7.0:1
power186.4 kw / 250 bhp
specific output142.13 bhp per litre
bhp/weight208.33 bhp per tonne
torque291.5 nm / 215 ft lbs @ 4500 rpm
body / frameFiber Glass Body over Chrome-Molybdenum Steel Spaceframe
driven wheels4WD w/Limited-Slip Viscous Center Coupling, Front & rear Self-Locking ZF Differentials
front tires205/55 VR 16
rear tires205/55 VR 16
front brakesVented Brembo Discs
f brake sizemm / in
rear brakesVented Brembo Discs
r brake sizemm / in
steeringRack & Pinion w/Power Assist
f suspensionUnequal Length Wishbones
curb weight1200 kg / 2646 lbs
wheelbase2440 mm / 96.1 in
front track1510 mm / 59.4 in
rear track1535 mm / 60.4 in
length3990 mm / 157.1 in
width1880 mm / 74.0 in
height1360 mm / 53.5 in
transmission5-Speed Manual
gear ratios:1
key driversMarkku Alen, Henri Toivonen, Fabrizio Tabaton, Massimo Biasion
race victoriesRAC 1985, Monte Carlo 1986, Argentina 1986, Italy 1986, USA 1986