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 by Richard Owen
engine Inline-4
position Mid, Longitudinal
aspiration Duel Stepped Volumex Supercharger & KKK Turbocharger
valvetrain DOHC, 4 Valves per Cylinder
fuel feed I.A.W. Weber Marelli Electronic Fuel Injection
displacement 1759 cc / 107.3 in³
bore 88.5 mm / 3.48 in
stroke 71.5 mm / 2.81 in
compression 7.0:1
power 186.4 kw / 250 bhp
specific output 142.13 bhp per litre
bhp/weight 208.33 bhp per tonne
torque 291.5 nm / 215 ft lbs @ 4500 rpm
body / frame Fiber Glass Body over Chrome-Molybdenum Steel Spaceframe
driven wheels 4WD w/Limited-Slip Viscous Center Coupling, Front & rear Self-Locking ZF Differentials
front tires 205/55 VR 16
rear tires 205/55 VR 16
front brakes Vented Brembo Discs
f brake size mm / in
rear brakes Vented Brembo Discs
r brake size mm / in
steering Rack & Pinion w/Power Assist
f suspension Unequal Length Wishbones
curb weight 1200 kg / 2646 lbs
wheelbase 2440 mm / 96.1 in
front track 1510 mm / 59.4 in
rear track 1535 mm / 60.4 in
length 3990 mm / 157.1 in
width 1880 mm / 74.0 in
height 1360 mm / 53.5 in
transmission 5-Speed Manual
gear ratios :1
key drivers Markku Alen, Henri Toivonen, Fabrizio Tabaton, Massimo Biasion
race victories RAC 1985, Monte Carlo 1986, Argentina 1986, Italy 1986, USA 1986