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.

 

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