1098 Windy Hill Road, Kyle, Texas 78640, United States

(512) 295-2683


Lightweight Plastic Motors



P-Ayr offers the early model 392 & 426 "Hemi" replica engine.  These "Chrysler Firepower" replicas are a great tool for any of your builds.  

Chrysler applied their military experience with the hemispherical combustion chamber to their first overhead V-8 valve engin released under the name FirePower, not "Hemi," in 1950 for the 1951 model year.  

The 392 was offered in 1957 and was one of the most formidable engines of ti's time.  Still called "Firepower" at this point, these engines were used by drag racers.

The 426 "Hemi" was considered the 2nd generation "Hemi" engine.  The head designed was revived in 1967 and were the first engine to actually be called "Hemi".  The 426 of the 1960's was produced for use in NASCAR racing and was used in the racing version of the Pontiac Belvedere in 1964.  In 1965 the "Hemi" was offered in the Dodge Dart  and the Plymouth Fury and later in the Dodge Coronet.

For a bit more history on the "Hemi" please click below