By far the most powerful Mustang ever to gallop out of Dearborn to that
time, the 1969 Boss 429 was built to homologate the 429 CI engine for
NASCAR, but it also satisfied Ford president Bunkie Knudsen’s desire for
“a really hairy, crazy road machine.” And hairy and crazy it was: built
for NASCAR’s torturous environment, the 429 packed a steel crank in
4-bolt mains, NASCAR connecting rods with half-inch bolts, domed
aluminum pistons and special rocker arms, all forged to thrive at
sustained high engine speeds. “Dry deck” sealing was used in place of
conventional head gaskets to handle the increased combustion chamber
pressures, which were stoked by a high-volume intake charge delivered
through a high-rise aluminum intake manifold with a single Holley 735
CFM 4-barrel carburetor.
My father told me I could by whatever I could afford and he would pay the insurance. When I came tumbling home in one of these my mother nealy had a heart attack. His didn't come until he got the insurance statement! The fit under the hood was so tight that you had to disconnect the motor mounts and jack up the the entire engine just to change the spark plugs. Lost count on the number of tickets I got. The insurance company did not!
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