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Re: Engine Masters 440-6 vs 426 Hemi [Re: 2boltmain] #3016079
02/16/22 05:09 PM
02/16/22 05:09 PM
Joined: Jun 2016
Posts: 900
Washington
H
hemienvy Offline
super stock
hemienvy  Offline
super stock
H

Joined: Jun 2016
Posts: 900
Washington
Iron 429 CJ heads have been over 900 HP, not bad.

Re: Engine Masters 440-6 vs 426 Hemi [Re: cudaman1969] #3016243
02/17/22 10:42 AM
02/17/22 10:42 AM
Joined: Jul 2003
Posts: 4,744
Holland MI Ottawa
2
2boltmain Offline
master
2boltmain  Offline
master
2

Joined: Jul 2003
Posts: 4,744
Holland MI Ottawa
I remember a topic here on moparts a long time ago. Maybe more than 10 years ago. Age old question posee was:" Who was the quickest between LS-6, Hemi, Stage 1, Hurst Olds 455, 440 Six pack and that hot rare Pontiac 455 from 1971?" Lots of stories of street racing back in the day of the Hemi being king as well as the Hemi losing. Period magazine tests were posted. A member her simply replied this- or similar. "Its 1971. All the heavy hitters are present, bone stock and compared. ETs will be similar. Now put $500 (1970 dollars) into each car and run them again. Hemi for the win." The 429 Ford was not mentioned in this particular topic. In fact it usually is left out of bench racing discussions maybe because of its rarity? Ford was weird. They had potent components- (heads) but the as available to the public total package was neutered to the point of handicapped. 351 Boss ran great though.

Last edited by 2boltmain; 02/17/22 10:48 AM.

Keep old mopars alive.
Re: Engine Masters 440-6 vs 426 Hemi [Re: Hemi_Joel] #3016387
02/17/22 08:35 PM
02/17/22 08:35 PM
Joined: Feb 2005
Posts: 4,309
Prospect, PA
BSB67 Offline
master
BSB67  Offline
master

Joined: Feb 2005
Posts: 4,309
Prospect, PA
It the broader picture over years of results that you need to look at. That is the beauty of looking at the mountain of track data.

Certainly you can find a PSMC 426 car that ran 126 mph and a 440-6 car that ran a 106 mph, or a 440-6 car that ran a 118, and a 426 that ran a 111.

But when you toss out the outliers, and look at 20 years of data, the PSMC hemi cars ran 4 to 6 mph faster than the 440-6 cars. That is probably indicictive of a 40 to 70 hp difference. In the early years, they were all slower. In the later years, they were all faster, but stayed about the same relative to each other. In a more true to factory stock, the relative difference was probably 3-5 mph and 30 to 50 hp.

I personally trust this high level observation as a reflection of what is generally true when comparing relative stockish 426 to 440-6 motors even though none of these motors racing in PSMC are stock. It is certainly better than a singlar dyno test compatison using motor parts laying around the shop.




Re: Engine Masters 440-6 vs 426 Hemi [Re: BSB67] #3016402
02/17/22 09:19 PM
02/17/22 09:19 PM
Joined: May 2012
Posts: 1,812
South Bend
John Brown Offline
top fuel
John Brown  Offline
top fuel

Joined: May 2012
Posts: 1,812
South Bend
PSMCDR list of fastest cars.

psmcdr.com/all-time-fastest-lists


July 19th should be "Drive Like Rockford Day". R.I.P. Jimmie.
Re: Engine Masters 440-6 vs 426 Hemi [Re: John Brown] #3016554
02/18/22 03:09 PM
02/18/22 03:09 PM
Joined: Oct 2003
Posts: 11,678
W. Kentucky
justinp61 Offline
I Live Here
justinp61  Offline
I Live Here

Joined: Oct 2003
Posts: 11,678
W. Kentucky
Years ago, I met a guy that had moved here from Texas, he was an old Mopar guy. He told me that where he lived in Texas, they raced the 1/4, then continued for 1 mile. His car at the time was a 66 Hemi Sattelite, 4 speed. What he told me about racing 6 pack cars mimics the article posted by Somecarguy. He said in every gear when the Hemi started breathing it would pull out more on the Six Pack cars.

I have no personal experience with a Hemi, always above my pay grade.

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