Few rivalries in American automotive history are as storied and intense as that between Ford's Boss 429 and Chrysler's 426 ...

In the truest sense of the word, no automobile engine actually has a fully hemispherical combustion chamber. However, according to the looser hemi definition, the Ford Boss 429 engine is ...

The original Ford head got its semi-hemi nickname from a chamber configuration ... Brown and Lohone used a flat-tappet camshaft like later Boss 429 engines to actuate the valves.

The old saying goes, "There is no replacement for displacement." While modern engine technology proves that logic is fundamentally flawed, it's still fun to remember the inexpensive gasoline and ...

The Boss 429 was Ford's answer to Chrysler's 426 HEMI that dominated the NASCAR series following Ford's attempt to get its 427 SOHC engine approved for use. Much like the Boss 429 was developed ...

The 429's main purpose was to legitimize an engine package for racing ... Chrysler's 426-cubic-inch Street Hemi, but Chrysler owned the nickname Hemi, so Ford couldn't, and never did, call the ...

One of only five examples known to exist in this color combo, this 1970 Ford Mustang Boss 429 sold for over $600,000, setting ...

For instance, the iconic 426-cubic-inch (7.0-liter) HEMI V8 found ... the 1970 Superbird. Ford developed two homologation specials in 1969, the Boss 302 and the Boss 429. The former was created ...

This will be the first official continuation of the legendary Boss 429 Mustang, which packed a 429-cubic-inch V8 built to take on the Chrysler Hemi ... a modern Ford Coyote V8 crate engine or ...

Ram’s 6.4-liter Hemi V8 dials up a maximum of “just” 410 horses and 429 pound-feet of torque ... in principle, means the new Ford engine should be more reliable than higher-stress, forced-induction ...

No Boss 429 vehicles were produced after that because NASCAR killed off all hemi-style engines with restrictive carburetor rules for the '71 season, and if Ford couldn't race the engine ...

The original Ford head got its semi-hemi nickname from a chamber configuration ... Brown and Lohone used a flat-tappet camshaft like later Boss 429 engines to actuate the valves.