McLaren M8a 1968
The 1968 Can-Am works cars were further developments of the very successful M6A design and were again kept as simple as possible.
The M8A was an evolution of the previous M6A design, and featured an all-aluminum 7 liter Chevrolet big-block V8 as a semi-stressed chassis member. The engines were built by Gary Knutson and initially developed 620bhp. Two complete M8A race cars and one spare tub were built.
Employing single curvature panelling and square tube sections in the monocoque, which now used the engine as a partially stressed structural member. Three cars were built, dominating the series with Denny winning the championship.
Chassis: Aluminium alloy and magnesium panelling monocoque based on steel bulkheads and using the Chevrolet engine as a partially stressed structural member stiffening the rear bay
Suspension: Single top link with radius arm, lower wishbone, anti-roll bar and coil spring/shock units in front. Twin radius arms with single top link, reversed lower wishbone and coil spring units at rear. McLaren cast magnesium wheels 15 x 10 front and 15 x 15 rear
Brakes: Lockheed discs all around, 12 inch diameter with 17/3P calipers and dual aerodynamic surfaces
Body: Reinforced polyester resin panelling
Engine: Chevrolet V-8 with 4 speed Hewland transaxle
Dimensions: Wheelbase 94 inches, front track 57.6 inches, rear track 56 inches.