On right now!

on where?

Motortrend

If they are dead stock then it will be a snooze fest. We've tried to run a few Hemi engines on the dyno with stock distributor and stock carbs and they usually don't run very well. It takes a lot of work to find factory original parts that actually still work.

They used a stock cam in both same grind, headers on both.
On the 440 an Edlebrock Aluminium sux pack intake 3 Holley carbs not sure if originals or the replacements.
The Hemi had a non stock 2x4 aluminium intake but said it was close to stick but had both AFB and Holley 4150 patterns so ran 2 Holley carbs.
Both non ported iron heads. Think 440 was 906 and the Hemi were Mopar Performance but had original valves from an old Hemi.
Was he said 440 with stick replacement type poisons was 9.5 ish but Hemi was heavy forged and was in same neiborhood compression.
Stock Mopar Performance Hemi block they said was available since 1994.
Stated they wanted close to same compression ratio on both, same cam grind both and non ported heads on both.
Not exact but what they could do. Steve said the same heads on a 383 and was on the money at 335HP just like MA said it should be. But fell short of the 375HP on a 440 on the past
This time they worked on the 440six well.

i thought i heard them say they used a hydraulic roller in both with the same grind, maybe i heard wrong.

Maybe the vacuum carbs held back the hemi down low too.

My 6 pack GTX used to kill my Hemi RR for the 1/8, then the hemi started rolling. So that's consistent with this test and what everyone for decades said as well.

If I remember correctly...

The 440-6 had TRW 6-pack pistons in it. The cam was a Comp hydraulic roller with 236° intake duration, and something like .549" lift. The exhaust duration was 5 or 6 degrees more, and the exhaust lift was very close, but not identical to the lift on the intake side. The Hemi had a cam (also ground by Comp) that was not itself identical to the one in the 440, but once the rocker ratios of the Ray Barton Hemi rockers were taken into account... the *effective* lift and duration of the Hemi cam was very close, nearly identical to that of the cam used in the 440-6 for this shoot-out.

The heads on this 440-6 were some of the first heads that Dulcich himself ported, many years ago when he was first learning to do port work. He mentioned that he had used this very same set of heads on various different short blocks over the years, and that they still had factory valves in them. Nothing fancy... iron heads with beginner's port work.
The Hemi also had iron heads on it, just as it came from Mopar Performance as a crate engine, back in the early mid-90's.

Looking at the dyno graphs after the pulls for both engines were complete, they pointed out that the 440-6 got into what seemed to likely be a bit of valve float near the upper end of its pull. The Hemi, however, was pulled to a higher RPM (seems like it was 5 or 600 more RPM), to bear witness to how the larger port heads/smaller cubic inch engine could actually come to life later in a quarter mile drag race, as many times the Hemi did... overcoming its competition later in the 1/4 mile... somewhere after/beyond the 1/8th.

One interesting thing about them pulling the Hemi to the higher RPM was, the dyno graph for the Hemi showed no signs or indications of any valve float. So, I'm assuming (guessing) that they used different valve springs/pressures on the Hemi, or perhaps this stability could be attributed to the difference in the Ray Barton rockers/rocker ratios that were run on this particular engine. Both engines (I'm assuming again) would have been equipped with identical hydraulic roller lifters, eliminating a variable there.
Seems like the valves in the Hemi would be a bit heavier than those in the 440, and if that is correct, this is another variable that was overcome by either a better valve spring, or the cam profile being ever so slightly different due to accomodating the Hemi's different rocker ratio(s)... or perhaps, a combination of these differences. Not trying to make rocket science out of this, but....

All in all, I really enjoyed and appreciated this episode.

Is it accurate that the 440 wedge was a passenger car engine design adapted to racing and the Hemi was a race engine design adapted to passenger car use? (Passenger car meaning available to the public like any other car)

Remember the 4 door Hemi Scott Smith was involved with?
He posted pictures of as found just dirty and made to run drive again. And later all done up.
Street Hemi offered on a good bit of cars but was a whopper of an option price wise.
The old days of order it and we make it

More or less, yes.

The cams were Comp rollers. Heads stock etc except the hemi had roller rockers.440 made tons of torque low But as stated the hemi had large heads and made HP up high Compression ratio was pretty mild for both.Both pretty impressive for such mild builds.Rocky

If you happened to DVR this....do you have a season and episode number? Thanks!

Still NOT stock, “let’s give this 440 a big boost and the Hemi nothing, to see which is better“. Make believe.

The test that they did was a little different than most. Rather than try a shoot-out between the 440 and the Hemi as they would have been stock 50 years ago. They spec'd them in as close to identical to each other as they could to see what each one's strong and weak points were. I don't remember seeing a test done quite that way before.

And they basically showed what many of us have always known; the 440 typically runs out of steam by 6,000 or so but had the torque down low while the Hemi likes to pull hard up top. The one thing that surprised them was the huge level of torque that the 440 developed.

Personally, I have always felt that the 440 was the better choice for many (maybe most) casual hot roders back then. It's was torquey, would run the same most every time, and all most guys had to do was mash the throttle and look for traction. The Hemi however needed a lot more attention to it's tune to keep it running at it's best. And the driver needed to 'drive' the Hemi the right way to get the most out of it. Then there is the gearing issue along with the impact of the track length. The Hemi wasn't at it's best in the 1/8, a place where the 440 and other big inch engines shined. And a lot of Hemis left the factory with compromise gearing that hurt their performance because they usually had to do double duty both as basic transportation as well as racing.

Imagine a Hemi with a 727 and 3.23 gears running in the 1/8th with a casual driver. Not hard to see that a 440-6 in the right hands could send the Hemi home early.

Sorry, no I don't. But I believe it is the newest episode and the way they usually do it is to show the latest episode first on Friday night and the follow it with the previous week's episode. So, it should be on again next Friday night.

That's what I heard. It peaked my interest as I have a hydraulic roller in my 511, although I have changed to solid rollers. I was very suprised at their results.
Also, I thought I heard them say that the 440 had a forged piston.

Disclaimer: My hearing isn't the greatest.

For comparison, in 69-71 I had a A-12 , my buddy had a 67? Plymouth Hemi.
These were both pretty much factory set-up when we did some street racing in 69, (timing and jetting were
played with)
Both 4:10s, street tires.

First couple of times we raced, I put a car on him early, he came back on me slowly, but couldn't
catch me before the 1/4.

He went home, changed to 4:56s and reversed the out come, but I couldn't close on him at all.

My car ran 13.6s at 106 consistently at a local track in that tune.

Pretty much what that film alluded to.

Joe

S6 E12

the 64 & 65 race hemi was detuned cam and compression wise for street use in 66.
the 440 was basically a torquey street engine upped to [semi] race status with the A12's.
do i have this correct ?