It was ahead of its time, and under engineered which made it suitable for performance tuning
http://www.austin-rover.co.uk/index.htm ... verv8f.htm
stock
Capacity Bore Stroke Max. Power Max. Torque Applications
3528cc 88.9mm 71.12mm 91bhp @ 3500rpm 166lb ft @ 2000rpm 1979-82: Land Rover 109
125bhp @ 4000rpm 185lb ft @ 2500rpm 1981-86: Range Rover
127bhp @ 4000rpm 194lb ft @ 2500rpm 1970-71: Range Rover
130bhp @ 5000rpm 185lb ft @ 2500rpm 1971-77: Range Rover
132bhp @ 5000rpm 186lb ft @ 2500rpm 1977-86: Range Rover
132bhp @ 5000rpm 1980-82: Triumph TR8
1980-81: Rover SD1 (US-spec)
134bhp @ 5000rpm 187lb ft @ 2500rpm 1986-xx: Range Rover
135bhp @ 4750rpm 185lb ft @ 2500rpm 1970-71: Range Rover
135bhp @ 4750rpm 205lb ft @ 3000rpm 1970-xx: Range Rover
1975-78: Land Rover 101 (military)
137bhp @ xx00rpm 193lb ft @ 2900rpm 1974-77: MGB GT V8
143bhp @ 5000rpm 202lb ft @ 2700rpm 19xx-76: Rover P6 V8
144bhp @ 5000rpm 197lb ft @ 2700rpm 1968-xx: Rover P6 V8
150bhp @ 5000rpm 204lb ft @ 2700rpm 19xx-76: Rover P6 V8S
151bhp @ 5200rpm 201lb ft @ 2750rpm 1967-73: Rover P5 3.5-litre / 3½-litre
155bhp @ 5250rpm 198lb ft @ 2500rpm 1976-86: Rover SD1
165bhp @ 4750rpm 206lb ft @ 3200rpm 19xx-xx: Range Rover
190bhp @ 5280rpm 220lb ft @ 4000rpm 1982-86: Rover SD1 Vitesse
3948cc 164bhp @ 4750rpm 212lb ft @ 2600rpm 1989-date: Land Rover Discovery
178bhp @ 4750rpm 220lb ft @ 3250rpm 19xx-xx: Range Rover
185bhp @ 4750rpm 235lb ft @ 2600rpm 19xx-xx: Range Rover
3948cc 190bhp @ 4750rpm 236lb ft @ 3000rpm 1994-2001: Range Rover
4278cc 200bhp @ 4850rpm 250lb ft @ 3250rpm 1994-96: Range Rover
4554cc 225bhp @ 4750rpm 277lb ft @ 3000rpm 1994-2001: Range Rover
Just had a look at the stock V6 in the trusty fronty
horsepower 205 bhp @ 5400rpm : torque 214lb-ft @ 3000rpm
not many above can beet that at stock