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05-22-2023, 10:05 PM
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#1 |
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Member
Join Date: Feb 2016
Posts: 266
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When did the 426-4v Hemi & 427-4v HiRiser become legal?
I know these combos appear in the NHRA guides today:
426-4v Race Hemi Mopar 427-4v HiRiser Ford (1964) But to my knowledge the combos never existed outside of NASCAR. Were these combos NHRA legal in the 1964-1971 era, and did anybody run them? If so what were they factored at back then? (Near as I can figure, the Race Hemi & 427HiRiser-8v were factored at 500hp, except the 427HiRiser-8v was factored down to 450hp for its final legal year of 1969). Does anybody run the 4v combos today? |
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05-23-2023, 11:55 PM
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#2 |
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Senior Member
Join Date: Nov 2007
Location: Div. 6, Central WA
Posts: 669
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Re: When did the 426-4v Hemi & 427-4v HiRiser become legal?
Deleted, misread.
__________________
Dave Noll, E/FS ,?/SA 6526 Last edited by Dave Noll; 05-24-2023 at 01:31 AM. |
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05-25-2023, 09:37 PM
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#3 |
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Member
Join Date: Feb 2016
Posts: 266
Likes: 96
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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 |
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