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The Boss 429 Mustang is a high-performance Ford Mustang variant that was offered by Ford in 1969 and 1970. Overview. The distinctive enormous valve covers on a semi-hemispherical head Boss 429 engine. The Boss 429 was produced in limited numbers in 1969 and 1970.
11 Φεβ 2021 · Almost-Hemi. The 429 was well suited to a competition role thanks to its sizable bearings and semi-hemi combustion chamber (with angled valves canted into the head that allowed for a larger size), and even out of the box its advertised (read: underrated) 360hp made it a strong street contender.
9 Ιουλ 2020 · The heart and soul of the Boss 429, you could say, is its combustion chamber design: a traditional hemi configuration, but with a twist. On a conventional hemi, Chrysler for example, the valves are deployed at right angles to the crankshaft centerline, or vertical in this photo’s orientation.
20 Φεβ 2024 · Often called the 429 “Semi-HEMI,” the 429 Boss featured modified aluminum heads that used a semi-hemispherical combustion chamber design and featured large canted valves similar to the Chevy big block.
The problem with the 1969 Ford Mustang was that its semi-hemi 429-cid V-8 was a high-rev NASCAR engine, not a drag mill. A 735-cfm Holley four-barrel with ram-air, an aluminum high-riser, and header-type exhaust manifolds completed the engine, which retailed for $1,200.
14 Φεβ 2024 · Ford created the Boss 429 to compete with Chrysler's 426 HEMI, but putting the gigantic engine into a Mustang engine bay provided unique challenges. Ford designated select Sports Roof...
Looking for information on the 1969 Ford Mustang Boss 429? See our ultimate guide which includes specifications, engine type, power, photos, & more.
