Editing Ford engine specifications (section)
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===429 Cobra Jet=== *Four-bolt main engine block (with exception to some early 1970 models) *Larger cylinder heads used 2.25" x 1.72" intake and exhaust valves *Rocker arms were stamped steel 1.73:1 ratio with sled type fulcrums, threaded screw-in rocker studs and pushrod guide plates *The rocker arms on the 429 cubic inch Cobra Jet were also adjustable prior to 1969 *Cobra Jet used a Rochester Quadrajet carburetor atop a spreadbore cast iron manifold
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