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From the Motor Sport Archive
The Castrol Grand Prix, the ninth round of this year's Can-Am series was run at the challenging Laguna Seca circuit in Monterey, California, and marked the first time this season that all the main contenders appeared at the same time. In addition to Denis Hulme and Peter Gethin in the works McLaren M8Ds, Chris Amon was making his second appearance in the works STP March 707, BRM had two cars for George Eaton and Pedro Rodriguez, Eric Broadley was present to help Peter Revson with the sorting of the long-wheelbase Lola T220, Vic Elford reappeared in Jim Hall's "vacuum cleaner" Chaparral 2J for the first time since Atlanta, and Jackie Oliver reappeared for the first time since the second race at St. Jovite in a new version of Peter Bryant's Ti-22 titanium car. The first seven cars were little changed since the eighth race at Donnybrooke but the Ti-22 was an entirely new car, not just a modified version of the one in which Oliver chased Gurney to the flag in the first race at Mosport and then crashed on the first lap at St. Jovite. Reading like an advertisement for one of the Big Three's new models, the new Ti-22 is longer (by 2 in.), wider (by 4 in.) and lower (by 1 in.) than the original car. The mid-section of the chassis has been strengthened by titanium sheet stiffeners in the pannier fuel tanks; the 8-litre Chevrolet engine now acts as a stressed member (with the assistance of diagonal braces); and the front suspension has been changed to leading rather than trailing lower radius arms to provide greater strength under braking (one of the few weak points in the original car).