The ball-stud hemi (known internally as A279 and affectionately as the BS Hemi) [1] was an automobile engine designed by Chrysler Corporation in the late 1960s. [2]

2018年8月15日 · With the 2.25-in. intake valves tipped 15 degrees and the 1.94-inch exhaust valves at 6 degrees from cylinder centerline, the A279 featured a tighter, shallower combustion chamber than the 426, but maintaining the familiar Hemi shape.

2023年1月1日 · Intended for assembly-line production somewhere between 1971 and 1973, the Ball-Stud Hemi was tentatively scheduled to replace three different blocks and two distinct cylinder head designs with...

2011年3月5日 · Thus began the development on the A279 engine program, otherwise known as the Ball Stud HEMI. The most noticeable aspect of the Ball Stud HEMI was due to its canted valvetrain, a configuration made famous by the “Porcupine” Mark IV Chevy big block.

2003年2月10日 · A279 1968-1970 440 Ball-Stud Hemi big-block prototype. Originally developed as a low-cost competitors for the Chevy big-blocks. Ball studs were used instead of forged rocker arms and Hemi heads were added. Click here to return to full listing.

2001年8月30日 · the "Ball Stud" Hemi was designed to be a cheap alternative to compete with the low-cost Chevy big-blocks. They were based on 2-bolt B-blocks, available in B and RB strokes, to make 404 and 444 cubic inch motors. The heads get Hemi chambers that are slightly twisted and shallower than the 426 Hemi. Here are some pictures and an excerpt from an ...

2014年2月6日 · Back in 1968, efforts to improve both the production practicality and the overall mass of the 426 Hemi V8 led Chrysler to its more-than-experimental A279 -- the now-legendary "Ball Stud Hemi."

2024年4月30日 · The Ball-Stud V-8 stands out as the rarest among all Chrysler Hemi engines and here's why its significance in Mopar's history cannot be overstated.

2015年11月28日 · Geoff Stunkard traces the history of the Hemi engine’s development at Chrysler, from the first Hemi installed in the Republic XP-47H in 1945 to the last in 1969, the A279 project.

2021年2月10日 · The ball stud hemi could probably never have beaten the 426 hemi for power. The design was a compromise (on airflow) for the sake of a smaller/cheaper cylinder head & …