![]() The 460 motor is a 429 with longer stroke, same bore. Mechanical camshaft with adjustable rocker arms.Cast iron crank shaft with higher nodularity than the base 429.In 1971, Ford offered the Super Cobra Jet 429. Compression was increased from 10.5:1 to 11.3:1.Guide plates like used in the Boss 302's.Screw-in rocker studs in the early 70 models.Bigger heads with larger ports and valves.Occurred in the middle of the production year so some early Cobra Jet cars hadĤ28's, later cars were 429's. In 1970 the 428 Cobra Jet Motor was replaced with a 429 CJ engine. The Boss 429 was a "385" motor but with the above changes is not interchangeable One long and one short rocker arm per cylinder.Mustangs to qualify the motor for racing. So FordĮngineers developed a unique set of heads and placed them on a 429 Mustang inġ969. It also permitted an better unshrouded mixture ofįord needed a better NASCAR and NHRA motor. The canted-valve design angled the valves in the head. Rocker shafts were replaced with rockers riding on fulcrums with separate.Canted-valve cylinder heads forming a slightly hemi-spherical combustion.The later motor was for Lincolns and Mercury's. ![]() Available in two versions in 1968, the 429 and the hugerĤ60. And the new 429 was a brand new design called the The 428 was a ten year old FEĭesign, more tamed down. If you wanted a big block engine in 1968 you could choose a 427, 428 or the
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