When did the 426-4v Hemi & 427-4v HiRiser become legal?

Dave Noll · 05-24-2023, 12:55 AM

Deleted, misread.

DeuceCoupe · 05-25-2023, 10:37 PM

Pretty good answer here, thread from 3 years ago.
Looks like maybe 15 years ago the Race Hemi 4v and 427 HiRiser 4v became NHRA legal.

But it appears back circa 1964-1971 it was all 8v.

http://classracer.com/classforum/sho...=38252&page=53

05-24-2023, 12:55 AM	#1
Dave Noll Senior Member Join Date: Nov 2007 Location: Div. 6, Eastern, WA Posts: 710 Likes: 2,671 Liked 239 Times in 112 Posts	Re: When did the 426-4v Hemi & 427-4v HiRiser become legal? Deleted, misread. __________________ Dave Noll, EF/S ,?/SA 6526 Last edited by Dave Noll; 05-24-2023 at 02:31 AM.

05-25-2023, 10:37 PM	#2
DeuceCoupe Member Join Date: Feb 2016 Posts: 274 Likes: 98 Liked 48 Times in 44 Posts	Re: When did the 426-4v Hemi & 427-4v HiRiser become legal? Pretty good answer here, thread from 3 years ago. Looks like maybe 15 years ago the Race Hemi 4v and 427 HiRiser 4v became NHRA legal. But it appears back circa 1964-1971 it was all 8v. http://classracer.com/classforum/sho...=38252&page=53