Reply to "2 or four bolts main caps, is it so impotant?"

George PAdmin.

No, not even close.

Only the De Tomaso vehicles equipped with US "engine code Q" engines had 4 bolt mains (these are the Cobra Jet engines). The Cobra Jet engines were produced in the US from mid-1971 through mid-1974. This would encompass all of the L models, and the earliest GTS and Group 3 models built while Ford was involved.

The earliest Panteras, such as the pushbutton models, were equipped with US "engine code M" engines, and the later Panteras built after the Ford era utilized engines sourced from Australia. These two versions of the 351C had 2 bolt mains.

The two bolt mains will hold the lower-end of the engine together long after the cylinder walls have given out. The cylinder walls are the engine's weakness, not the lower end.

1/30/181:08 PM

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