Boss 429
Boss 429 originated in Ford’s NASCAR programme. Its huge heads with near-hemispherical combustion chambers required substantial changes to the Mustang engine bay.
EXPLORE THE HISTORY ↓
Boss 429 – motorfoto fra homologeringsbilenA piece of Ford V8 history
Boss 429 originated in Ford’s NASCAR programme. Its huge heads with near-hemispherical combustion chambers required substantial changes to the Mustang engine bay.
The production version was rated at 375 hp SAE gross. This was not the specification or output of a purpose-built NASCAR engine, nor was it the same as an ordinary 429 Cobra Jet.
Kar Kraft modified the Mustang bodies to accommodate the engine. Its engineering and limited build made Boss 429 one of the most collectible classic Mustangs.
Technical features
- Store alu-topper / aluminium heads
- OHV, 429 cu in
- Kar Kraft-karosseritilpasning
The stated output belongs to a specific factory or period configuration, not every version of this engine family. SAE gross (historic) and SAE net (modern) are not directly equivalent.
Reference
Photo source: Wikimedia Commons ↗. The photographer and reuse license are listed on the source page.
performanceparts.ford.com ↗Source material has been paraphrased and independently edited. Some historical figures are disputed or version-dependent.