Real HP numbers

[c00nhunterjoe]

Apples to oranges.  A 1/4 mile ain't much of a test!   Try 500 miles wide open!   
Same basic 426 engines, just tuned for different applications. 

I think the OP should buy a 340, build it stock and put it on a dyno.   

The question wasnt which one lasted longer, just are the hp numbers legitimately possible. The nascar guys of the time said 600 hp was the basic limit to run 500 miles at 7000 rpm. The drag hemis were more then capable of running 800 hp back then and are beyond that today.

[Bad B-rad]

The 426 Hemi and the 340, definitely the 340 six pack in the AAR 'CUDA and Challenger T/A are the two Mopar engine I hear the most about the factory advertised numbers being UNDERRATED. They always say the 340 was underrated and same thing about the 426,that was my original question,ifthe factory numbers were correct or underrated as is almost stated.

I think the OP should buy a 340, build it stock and put it on a dyno.   

I only build big blocks 

[ws23rt]

It has been about 47 years since the 426 Hemi was last offered to the public in a car.
At some point we might just start calling it "old"  

We can move our ass in a car these days like the hottest cars did in 1970 and it is considered just a device for transport.

The 426 is a great part of mopar history-- and today it is just that.  Those of us that like to play with old cars will never stop liking them.  I am on of those.
I had a Hemi RR for many years and only felt its full power a couple of times. The car was a mess at 150mph.  --Do not try this at home with that body style--
I have a hellcat challenger now and have yet to see 700 HP on the guage  (I have seen 600hp).

What I like to see these days at car shows are the real deal original hemi cars.  A clone car with a hemi should be on the street doing what they were made for. Reliving the past.

[A12 Superbee]

Also on the same thread it said that car and driver 1/4 tests had the 440 six pack(in the 69  Roadrunner 12.91@111mph) beating the 426 Hemi (13.4@107mph 1970 Roadrunner)in the 1/4 mile.  Is this also true, and was that because the 69 RR was stick vs the 70RR Hemi's auto? Both had 4.10 rears.

Its a well known fact A12 cars were faster than Hemi's down the 1/4 mile.

[Bad B-rad]

I have a hellcat challenger now and have yet to see 700 HP on the guage  (I have seen 600hp).

What I like to see these days at car shows are the real deal original hemi cars.  A clone car with a hemi should be on the street doing what they were made for. Reliving the past.

[1974dodgecharger]

A Honda is faster than a stock B body with a HEMI back in the day  in the 1/4 mile

[Bad B-rad]

That's why I put NOS on my 383,and why I posted the questions about 383 or 400 compression ratio in the engine section here. Because once a Honda almost got me at the track,so I put on a 75hp shot. "Just in case"
The Honda has more gears,give me a 383 and same gears as a Honda and he will never touch me.

[Mytur Binsdirti]

A Honda is faster than a stock B body with a HEMI back in the day  in the 1/4 mile

Sadly (or not so sadly), your basic V6 econobox today has more power than a stock small block or 383 of yesterday.

[c00nhunterjoe]

That's why I put NOS on my 383,and why I posted the questions about 383 or 400 compression ratio in the engine section here. Because once a Honda almost got me at the track,so I put on a 75hp shot. "Just in case"
The Honda has more gears,give me a 383 and same gears as a Honda and he will never touch me.

What does a 5 speed trans have to do with it? 1 thru 4 are the same and a 4 speed charger. A 4 speed auto honda is the same as a 727. You are not tagging overdrive at the drag strip.

[Bad B-rad]

What does a 5 speed trans have to do with it? 1 thru 4 are the same and a 4 speed charger. A 4 speed auto honda is the same as a 727. You are not tagging overdrive at the drag strip.
[/quote]

A stock 727 has some wide gears,that two to three gears are far apart. and I still have to drive my Charger home from the track, so 4.10 on the highway at 75mph for 1 and a half hrs really suck. If MY Charger was a drag only car then ok I can run 4.30's and the Honda never gets me.

Give me five gears, so I can run a numerically higher, called lower rear end gear, and that way my gears aren't so far apart, I can stay in the power band longer(closer ratio)
So I may not be tagging OD. But OD lets me run deeper gears and still drive the car home not trailer it.

[1974dodgecharger]

That's why I put NOS on my 383,and why I posted the questions about 383 or 400 compression ratio in the engine section here. Because once a Honda almost got me at the track,so I put on a 75hp shot. "Just in case"
The Honda has more gears,give me a 383 and same gears as a Honda and he will never touch me.

What does a 5 speed trans have to do with it? 1 thru 4 are the same and a 4 speed charger. A 4 speed auto honda is the same as a 727. You are not tagging overdrive at the drag strip.

you be surprised how many people more gears the better at the track even modern mopar folks (young ones inexperienced) claim 8 speeds is good for the 1/4 mile runs....claming they run through al 8.

[birdsandbees]

Yah  Never even used 4th in my 'Bee in the 1/4. 2 shifts off the lights was enough in 13 seconds! 

[c00nhunterjoe]

We run 2 gears in one of the race cars..... it doesnt get much further apart then that.

The tremec 5 speed conversions you reference are not meant to race. I cannot even begin to tell you how many i broke over the years speed shifting them.

Going from 4.10s to 4.30s will not be noticable at all. I ran 30s in my car for years and on a 28" tire it saw limited highway use. I did make several 200 mile trips up into the mountains via the interstate with it. She would hold 70 with no problem and get about 5 mpg doing it. The bigger problem is you think putting more gear in it will make it faster. It will not.

[Kern Dog]

A Honda is faster than a stock B body with a HEMI back in the day  in the 1/4 mile

??
What Honda?
Your words are not specific enough. Might as well say....My car is so fast, no 'vette can keep up with it. The "vette" being a CHEvette.

[Mike DC]

 
Modern Hondas & stuff can be fast on the track but they don't feel faster.  The low/midrange torque isn't there.  And the badass sound of a hot V8 has a big psychological effect too.

[Kern Dog]

Hell yeah it does.
2 years ago the wife and I ordered a 2015 Challenger R/T. 3 weeks after we took delivery, I had to get it to a shop to do something about the QUIET ! Holy crap these new cars are quiet. I had them remove the mufflers and weld in straight pipes. The cars come with twin catalytic converters, mufflers and resonators. Now ours can be heard at idle and part throttle. Before, it sounded like a Tesla.

In my 2007 Ram, I added a Cold Air Kit and a Flowmaster muffler. The intake roar is annoying though. It reminds me of Quadrajet equipped GM cars with the air cleaner lid flipped over.   
MMMMMMMWWWWWWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!

[c00nhunterjoe]

Hell yeah it does.
2 years ago the wife and I ordered a 2015 Challenger R/T. 3 weeks after we took delivery, I had to get it to a shop to do something about the QUIET ! Holy crap these new cars are quiet. I had them remove the mufflers and weld in straight pipes. The cars come with twin catalytic converters, mufflers and resonators. Now ours can be heard at idle and part throttle. Before, it sounded like a Tesla.

In my 2007 Ram, I added a Cold Air Kit and a Flowmaster muffler. The intake roar is annoying though. It reminds me of Quadrajet equipped GM cars with the air cleaner lid flipped over.   
MMMMMMMWWWWWWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!

https://youtu.be/lPINTtGZAqo