HP and HP2 what is the difference

[Ceedawg]

I know this is getting off the subject of HP2 engine blocks, but I inspected/verified a 1966 Hemi Belvedere II a few years ago. It was built in early December 1965 and had the HP2 signs on the front fenders. I heard that stood for Hemi Plymouth, 2 carbs. I think the reason that the 426 signs were lifted from the Dodges, was that no one knew exactly what HP2 was supposed to mean.

Mine is a Belvedere II also

 

[33 IMP]

Almost the same as my 63 426. Mine had 426 TM-P-HC

You had the high compression version, mine is the 11-1. Got "12 1/2" arias in it now.