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  Lotus 49B Cosworth
 

  Article Image gallery (94) Chassis (6) Specifications  
Click here to open the Lotus 49B Cosworth gallery   
Country of origin:Great Britain
Produced in:1968
Numbers built:7 (one unused)
Designed by:Maurice Phillippe and Colin Chapman
Predecessor:Lotus 49 Cosworth
Successor:Lotus 72 Cosworth
Author:Wouter Melissen
Last updated:June 20, 2014
Download: All images

Engine
Configuration Ford Cosworth DFV 90º V8
Location Mid, longitudinally mounted
Weight 168 kilo / 370.4 lbs
Construction aluminium block and head
Displacement 2,993 cc / 182.6 cu in
Bore / Stroke 85.7 mm (3.4 in) / 64.8 mm (2.6 in)
Compression 11.5:1
Valvetrain 4 valves / cylinder, DOHC
Fuel feed Lucas Fuel Injection
Lubrication Dry sump
Aspiration Naturally Aspirated
Power 430 bhp / 321 KW @ 10,000 rpm
BHP/Liter 144 bhp / liter

Drivetrain
Chassis aluminium monocoque with front subframe and fully stressed engine
Front suspension lower wishbone, top lever arm, coil springs over dampers
Rear suspension reversed lower wishbones, top links, twin radius arms, coil springs over dampers, anti-roll bar
Steering rack-and-pinion
Brakes Girling ventilated discs, all-round
Gearbox Hewland DG300 5 speed Manual
Drive Rear wheel drive

Dimensions
Weight 530 kilo / 1,168 lbs
Length / Width / Height 4,026 mm (158.5 in) / 1,880 mm (74 in) / 787 mm (31 in)
Wheelbase / Track (fr/r) 2,664 mm (104.9 in) / 1,524 mm (60 in) / 1,549 mm (61 in)
Tyres (fr/r) 4.75/10.3 - 15 / 6/13.5 - 15

Performance figures
Power to weight 0.81 bhp / kg

Race history
Major wins
1968 Monaco Grand Prix (Graham Hill in R5)
1968 British Grand Prix (Jo Siffert in R7)
1968 Mexican Grand Prix (Graham Hill in R6)
1969 Monaco Grand Prix (Graham Hill in R10)
1969 USA Grand Prix (Jochen Rindt in R6)
1970 Monaco Grand Prix (Jochen Rindt in R6)

Auctions
Past sales

Resources
Suggested reading
  • The Lotus Book S2, by William Taylor
Related articles
Useful links

  Article Image gallery (94) Chassis (6) Specifications