Before being replaced by the April 1, 1968, arrival of the 428 CJ, the mighty NASCAR-inspired 427 gave one last gasp in detuned form. Identified by the letter W in the fifth spot of the VIN, this early 1968 edition was the only 427 with hydraulic lifters, an iron intake manifold, a single point distributor, a smog pump (Ford’s Thermactor system), an automatic transmission (the four-speed was not available with the 427), and optional air conditioning. It was probably a case of “building out” soon-to-be obsolete 427 inventory. The W-code 427 and 428 CJ shared just about everything except main bearing caps and bore/stroke dimensions. Common to both were vital details such as camshafts, intake manifolds, valve and port sizes, and compression ratios.
SPECIAL NOTE. - GH6 hubs prior to 1952 had the adjusting cone on the dynamo side. This cone is extended to pass through the armature body and is flatted at the outer end to take (K428) notched adjuster washer, by means of which the cone may be turned. Dismantling instructions from 1 to 5 remain exactly the same as for the current model. For paragraph 6 read 'Unscrew the dynamo-side cone and lift the ball cage out of the hub shell. The spindle may now be pulled out from the other side, together with the fixed cone.' All further comments apply equally to all GH6 hubs.
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