Cam bearings were never fitted to the Triumph GT6, TR250 and TR6 engines during production.  We strongly recommend having your block machined to accept this cam bearing set if you're running a camshaft with more than 280 degrees of duration and / or in excess of 0.425" valve lift.  Many of our customers, even with milder camshafts, still opt to perform this modification for the piece of mind that it provides.

Wishbone Classics is able to machine your block to accept cam bearings if you require that service, inquire with us for details.

Additional durability and performance can be obtained by selecting our performance coating option.  The coating is a very thin sprayed application of a moly based material which has exceptional film strength and reduced surface friction.  The structure of the dried moly film is semi-porous and will hold oil on its surface.  The coating film reduces wear in low oil situations, such as engine start-up or in the event of a lubrication system failure on a race engine.