THE W-31 350

Muscle Car Review - - Muscle -

The W-31 Force-Air In­duc­tion sys­tem had its gen­e­sis in 1968 for F-85/Cut­lass S/Cut­lass Supreme coupes, which in­cluded the 325hp Ram Rod 350, spe­cial 2-inch in­take/1⅝inch ex­haust valves, and spe­cial high-per­for­mance camshaft that Oldsmo­bile claimed “has very rough idle char­ac­ter­is­tics that would be ob­jec­tion­able to some own­ers.” A floor-shifted three-speed man­ual with 3.91 gears and Anti-Spin axle were stan­dard, but most fea­tured wide- or close-ra­tio four-speeds. W-31s were eas­ily iden­ti­fied by two scoops un­der the bumper with tubes to the air cleaner. There were few changes for 1969, but Olds be­gan mar­ket­ing the ul­tra­high-per­for­mance mod­els un­der the W-Ma­chine ban­ner with Dr. Oldsmo­bile lead­ing the charge.

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