Chrysler introduced its ‘Polyspheric’ or ‘Poly’ V8 engines as a cheaper alternative to the legendary HEMI line of V8s. Almost all Poly engines utilized a HEMI block but featured a simpler head design with a single rocker shaft, prompting some to nickname it the ‘semi-hemi’.
A Chrysler Poly engine went up in flames at the recent 2016 AMSOIL Engine Masters competition presented by Hot Rod Magazine. The competition challenges engine builders to squeeze as much power as possible from vintage motors and as is the case when pushing anything to the limit, that can lead to some catastrophic failures.
The Poly motor, which was built by Buck Hinkle for the Engine Master’s vintage class, caught fire after the oil filter gasket failed during a dyno run and sprayed oil onto the hot headers. The engine caught fire almost immediately, but the Engine Masters experts had it extinguished before it presented any real danger to those near by.
Check it out in the video above.