WHEN IS A MOPAR ENGINE MOPAR POWERED

My neighbor sells CNC equipment. Contacted a potential customer who has rough billet blocks. Supposed to be able to machine any block. Is it the heads or the block or both that makes mopar powered?

I think it was valve arrangment in pro stock, like ieeiieei,or eiieeiie.

Top Fuel Hemi is still MoPar architecture. Stuf just got bigger.

Good question,,,, somewhere there's a fine line where its just a aftermarket engine. For instance the Sonny's 5.3 BS motors that most racers say its a Chevy, lol that's a aftermarket race motor.

Some heads up classes only allow certain valve spacing, and certain blocks are disallowed in some (example must be water blocks). Other classes have weight breaks for certain heads.