Dyno Room Exhaust Battle - Max Wedge vs. HP Manifolds vs. Headers
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Nick uses his dynamometer to test engines and put an end to guess work. Today, he will be putting three different classic Mopar exhaust options on a 440. Max Wedge, HP Manifolds, and Headers all get put to the test, and the dyno will pick a winner.
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Hats off to the person(s) that designed the Max Wedge manifolds over 60 years ago!
...makes a great case for those or headers on the same application adding 10% or more Hp. Surprised me but why they didn't use them must have been cost!!!
@@wokewokerman5280 they take a bit of room up as well.
Cheers
The were designed for early B body K frames. The engine was moved back in 66 B bodies so they don't fit the newer cars.
Yes their very cot.💪💪🆒💯👍
They definitely look awesome 👍😎,but their may be hood clearance problems.👍😎 Old school is definitely cooler and performs almost as the headers.
if your car comes with Max wedge manifolds then there is no need to buy headers. Chrysler engineers defenetly knew what they were doing :)
*Definitely
ˈdef(ə)nətlē/ adverb: definitely
without doubt (used for emphasis).
Sure if you have a low revving engine like that there isn't much to gain.
That 440 sounds so good with those Max Wedge manifolds on there
Yeah. This one had a really distinctive rumble.
I knew Chrysler was dead serious in the Max Wedge days, but this really surprised me. I was thinking +10 for the Max Wedge over the Magnums.
I was guessing 25 for the Max Wedge and 40-50 for the headers. The Max Wedge is impressive.
That sixpack just wants to breathe! Even though the headers made the most power, the max wedge manifold are just so cool, I would use them just for the looks alone! Bill from Linglestown Pennsylvania
The sure have a unique look.
The cool factor is out of this world,they give the engine the "RAM" look!
Me too. Vintage factory cast iron headers would make the owner the envy of all his MoPar friends
Lp
Hey, it's Dr. MOPAR!
The doctor is in!
@@NicksGarage ..I got a problem with my bumpstick! What do you suggest Doctor?
@@01trsmar . Trade it in. LOL.
I like the Dr.Mopar for Nick!
Impressed with how well those Max Wedge manifolds did. Shows that they knew what they were doing.
Max wedge manifolds are far better then I expected. Wow!
Max Wedge was the real deal , they sounded the best too
I Think I’d Go With The Max Wedge Manifolds If My Engine Bay Had The Room
Those wedge manifolds are a work of art. You can tell just by looking that they flow beautifully. The only question I had was whether the headers would do any better... and now we know!
5:29 just look at those Max wedge manifolds they are awesome looking. They are right there with the bundle of snakes love it!
They certainly have a distinctive look to them, don't they.
Nick always hits my wishes and my memories! In the mid-late 60’s, Mopars were the popular hot cars in my small town. With my first job out of high school I traded my 1960 Falcon (144” 6 cyl)for a 2 door 62 Dodge that had Max Wedge exhaust. They looked impressive under the hood and they had 3” removable block off plate on both sides under the door. Too bad that the car really had a very low perf worn out 361! The car may have been the ugliest Dodge ever made but I sure wish that I had it today. One more memory- the kid racer style of the day was jacked-up front end stance. The Dodge torsion bars made that really easy as compared to the twist-in JC Whitney spring spacers used on other cars. As I recall, the raised front end made it feel a bit airborne at 90mph+ on the rural blacktop roads. Thanks for the memories Nick!
back in the day I had em on a 1963 Dodge 426 max wedge straight off Chryslers dyno same ones from front page of hot rod mag they called em tri yi headers then switched to speaghtti headers out the fender wells ran 12.20 best nutural start @ 4000 rpm run 11.80 ...ah 1320 feet Then they outlawed nutural starts to many blown trans's held up the show for clean up! Ray ran on Det. dragway
Absolutely great looking max wedge design! Easier to route and keeps from burning spots onto the plug wires. Genius for sure!!
as lumpy and grumpy as it sounds
it is sweet music to my ears 👍🇨🇦
Right on.
NICK WAS THINKING THE SAME AS ME WHEN HE SAID IT SOUNDS LIKE A HARLEY
Mad Wedge manifolds just doubled in value.
Lol, and just saying "Max Wedge" sounds cool, I love old school horsepower tricks!! Yeah headers rule but factory option is very impressive. Thanks Nick for awesome videos. I am now actively seeking another 440 block to build and put in my 1991 Mercedes 300E !!
I always wanted a set of the Ram manifolds for my 383...ah the memories :) I tried using a 160 degree thermostat and lost mileage and power. Put a 185 back in and was back right again. I'll take the Max Wedge any day over the others ;)
Excellent video! Next "dyno battle" could be an intake comparison between the 6-pack intake vs Cross ram intake vs single carb intake.........could be very interesting.
Nick when I watch your videos I feel as if I have known you personally for years.I think it's because anyone can tell how genuine you are and I can appreciate that keep up the great videos .
Dewayne. Thank you.
Probably just me, but those Max Wedge manifolds have a very unique sound. Pretty shocking performance results.
They do sound different
From the beginning I figured the headers would win but I didn't think they would be so close between the Max Wedge. Impressive results for the Max Wedge in the midrange!! Very impressive!
I love how thorough Nick is before he goes full throttle.... That is how you get reliable numbers gang! Great work sir!
He aint no dummy. He knows what he does because he loves what he does!!!
Not too many dudes that can tune trips as fast and as good as he does
@@aarongrabowski3775 You got that right! People asked me why would you drive 3000 miles just to have him build an engine? Let alone in a 50 year old truck! I just say watch the mans videos!
Sounds like a max wedge intake comparison is in order
PEAK NUMBERS:
HP Manifolds = 380.6hp
Max Wedge Manifolds = 414.1hp
Headers = 418.5hp
HP Manifolds = 380.6hp@5200rpm (30:17) and 398.4LbFt@4600rpm (30:17)
Max Wedge Manifolds = 414.1hp@5100rpm (19:11) and 450.0LbFt@4700rpm (17:38)
Headers = 418.5hp@5200rpm (44:48) and 463.0LbFt (44:48)
I love that lumpy idle!
I'm surprised the Max manifolds flowed as well as the headers,another surprise is why didn't Mopar keep using the Max manifolds design instead of the restrictive newer version. Talk about choking out performance, those manifolds are awful!!!! Great tests Nick,I'd love to see more in the future, thanks again guys!
Thanks Nick. I always look forward to your videos. I find them well-presented, entertaining and informative.
Thank you very much. Glad you like them!
I’m 3 mins into this. My guess it’s the Hookers but not by much. I had a 1970 RR NEW. I changed to Hookers the performance changed some but the sound was so much better.
My reasoning is that the Hookers will have better scavenging.
Gotta love that rumble.
i think the headers would be for racing where tuned runner leanth plays a part but for avg use the max wedge are great.
I just love starting another week by watching Nick's videos and hearing that all-telling lumpy, cackling idle of a big muscle-car era engine on the dyno. It's like listening to the nightingales up in the trees, or kittens purring in your lap. Little children playing with puppies in a field of clover. Holley 2300s x 3 with Max Wedge manifolds... I wax sentimental.
If you look at the pictures of the Max Wedge cars, you won't see brake boosters. Those manifolds were too wide. Probably why they didn't last, along with the massive amount of heat they would give out along with the cost of the 3 inch pipes with their cutouts. These setups are still available in the after market. Almost forgot about the extra weight.
Max wedge 😁🤘 heck ya bud I am excited about this one
Thanks for joining us, B!
Very informative video. Thanks so much. When it comes to dyno results, I always like to see at least 1 lb-ft of torque per cubic inch. So the 440 with 450-460 lb-ft would make my cut.
Nick is dyno testing This should be interesting Max Wedge vs HP Manifolds vs Headers Vasili on the console checking temperatures Nick doing timing checks adjusting the carbs while he reflects By the end of the video we are all going to know Which of these systems has superior flow That is why Nick's Garage on a Monday is where I always go It's my favourite car show
Speaking of flow, Rober-to, always good to go, with his rhymes in tow.
@@NicksGarage You make every Monday for me Engineering like this is difficult Rhyming is easy
Wow - I guessed the regular manifolds would have cost 10HP. Very surprising (and disappointing) results from the stock manifolds.
Thanks So much Nick For the Test. You Are Awesome Brother 👍👍👍👍
Those exhaust manifolds are wicked I'd use them even if they made less power.
Wow. I expected headers to be best (who didn't?), but the Max Wedge manifolds are surprisingly close, and better than HPs for sure. It would have been interesting to record the sound levels of each- would Max Wedge manifolds into mufflers be the ultimate "sleeper" setup?
Ahh yes...
The exhaust manifolds for a R/B Chrysler engine.
414 HP on the "413/426 wedge"
Manifolds.
That was good power on those.
The second test, the
The "383/426 w/440 "HP" cast iron manifolds"
That was the one that bit me!
On the driver's side, last plug got me good!
A 1" round burn right were my hand meets the wrist...
I took a month to heal up.
Whenever I had to work on those I from then on I got under the car to remove that last damn
plug.
And besides, they were terrible for torque, and as we know torque is what moves the car.
373 hp / and you lost 50 lbs of torque? Ehhh.
The 1 7/8" headers....
I see that last plug on the driver's side winking at me....
I was installing a 440/472" with 10:1 comp into my dad's Imperial, I made a set of headers from a kit,
2" primary's to a collector of 8" along side the auto tranny.
Got very good power,
I never had a DYNO, but I figured it was a good combo for 525hp.
The Imperial whent 163 mph as Dad wrung her neck.
418hp ? I KNOW you didn't build that engine Nick.
I really enjoyed this vid!
Took me back to the days of testing and trials.
Spin them wrenches!
The way of the muscle car will never die.
T.
what an experience this is!! This channel and Nick has taught me so much about Mopar. I was raised on GM. My Grandpa raced old Camaros. he had a 440 Challenger but that was his baby. he kept it original but the old Camaros got 427s or 454s and later on he had LS1s. I seen plenty of them on the engine dyno over the years Grandpa would work on everybody's race car and get them ready for summer st Norwalk Summit dragway in Ohio. Grandma had a big block Ford wagon that could run with the best of them. all 3 Companies had a good big block and the small blocks were good
That lopey idle is ♥️sick 🥰dude. Thank ♥️you for sharing your time ☺️and knowledge 🤓with us. I would also like to thank your dear family for the lost time you get to spend with them. I cherish every waking moment of my life with my family and I know that you feel the same way.
So Nick, for your sacrifices and your entertaining time you spend with us motorheads, I want to personally thank you ❤
Hi Nick.
Muscle car fan from England here. Never owned one and barring a miracle I never will. Eh, the roads are too narrow round here anyway!
Interesting test. The only way to show what these parts really do. I was surprised at the weight of that exhaust manifold though - _33lbs!_ Jesus, that's 66lbs for both of them!
Something I'd like to see some time is engines being weighed. I know that'd need more than bathroom scales! For example, I was trying to find out the weight for a 426 Hemi. Got figures ranging from 720 to 843lbs. No wonder they called it The Elephant...!
With a set of 2 1/8th" headers, aftermarket heads and 10.5 -11.0 compression that thing would be 500 plus HP. with ease. Now the motor is over cammed for it's compression and would pick up both TQ and HP with a smaller one. To keep the cost down you could you go with a smaller CC head and reduce the overlap on the cam in an effort to bump up the numbers a bit Nick. MOPARTOYA!
Excellent test. Thank you. I'm always arguing with guys about long tube headers. So many guys think they only help at higher rpms. They increase low and mid range torque as well as higher rpm power. And those Max Wedge manifolds were very impressive and looked really cool.
I knew as a kid headers give more power you can usually feel it,some engines a lot more than others....Never had Max Wedge manifolds(like most of us) impressed by them,except the weight 33lbs wow!
Headers are a pain but worth it...I changed more collector gaskets than I care to remember!!
Now it would be awesome to test them at the strip..Headers vs HP vs max Wedge manifolds,you would need a car with a lift off front clip for quick install,would be a pain installing that in a street car lol..
I have an older Offenhauser single plane intake that I would like to send to you for a n intake manifold test.
Don't have the money right now for the Edelbrock RPM Air-gap, and got this 'Offy' pretty cheap. But I'd like to know what increases or loss of power it may make.
My engine won't be finished for a while, so you can borrow it til then.
Let me know.
Another good test would be on distributors!
Thanks for all the videos!
E
how much do the headers weigh? besides the supposed "high perf" exhaust manifolds, was there a set of passenger car normal exhaust manifolds to compare as well? those max wedge manifolds work amazing compared to the "high perf" ones, I mean night to day difference!!! I bet they didn't use them in the 60s because of the added weight though, compared to headers if they're racing, it's all about saving weight as you know. I love these comparison studies Nick, thank you very much guys!!! please keep them coming!!!!
I put those Ramcharger manifolds on my 62 383 Polara 500. When I swapped the 383 for a 440, I had to loose the brake booster. I also didn't run manifold gaskets, the ticking noise went away when it got hot. I was burning through exhaust gaskets.
Good Morning, Nick and crew. This is the test I've been waiting for, comparing the three exhaust manifolds. I wasn't surprised at the performance of the Max Wedge manifolds. The Chrysler engineers really knew what they were doing when they designed them, the headers won but not by much. If I had a 64 Dodge, I wouldn't put the 440 in it. I would find a 426 wedge motor, and build it into a 64 Max Wedge with a cross ram intake, and the Max Wedge exhaust manifolds, with about 10.0 : 1 compression ratio. It would be impressive to see that in the engine bay of the 64 Dodge.
Great job on the video George, your videos just keep getting better and better. A great way to start a Monday morning.
Thank you for joining us! Glad you are enjoying the uploads.
Eugene. I will ask Alain to look for a 426 Wedge to put in his 64 Polara. NOSTALGIA !!!!!
Great video and comparison. Throw in a bit of excitement with a fire and it can't be beat! LOL
Why does every engine bog down or go flat around 3,000 PRM on the dyno?
If he's not into racing and all I'd certainly go with the Max Wedge manifolds just for the looks.
@Car Guy daddyo Thanks! OK, sounds reasonable to me. Not familiar with how a dyno works. Great to watch and see the results especially with a comparison like this.
You can buy those manifolds repop for 1200 u.s the two air cleaners cost 500 u.s the intake if your lucky and find a complete intake carb and linkage anywhere from 1500 to 2500 u.s they have everything to do a max wedge clone but it's not cheap they have the exhaust that goes with the manifolds good show Nick I guess if you're a fan of mopar and the 440 engine in particular this is the one stop shop to go to nicks garage the mopar mecca of canada certified world wide mopar guru in the house!
how does the dyno read detonation.Engine made 418hp 460tq would that be about 315hp 350tq to the wheels with accessories compare numbers in a car vs engine dyno science
Headers will make the most power followed by the Max wedge manifolds , HP manifolds last ... I'm just starting to watch the video so I don't know the outcome.
Are the 1-7/8" headers the best size for this engine? I agree Max Wedge manifolds are cool old school.
Heck nick are we ready for Dino runs with a mopar?........ is the pope catholic? I love these tuner tests . My old man raved about max wedge and 413 cross rams. It’s nice to see the old tech in action.
THOSE manifolds must be worth gold because Ford 406 and 427 header style manifolds are worth over a thousand dollars .
As a former drag racer, many years in altereds & funny cars, we always knew that a good set of long tube headers evacuated the cylinders much better. Therefore, you had to richen up the intake to take advantage of the headers. If you had been able to rejet the carbs, I'll bet you'd see a bigger increase in HP
In a '64 Polaris, he needs to ditch the six pack and use the crossram from the Max Wedge days. Six packs belong on E bodies.
Thank you so much Nick! It's wonderful to see these three exhaust set ups tested head to head like this. This is the information many of us Mopar folks have wondered about since these cars were new. The dragstrip was the only way we could measure them in the old days, this was a much better comparison. The headers were the obvious Kings of power going into the test but the amount of superiority was always a point of debate. If the headers had the benefit of an optimum fuel air mixture the gains would have definitely been better and the gap between the MW manifolds and headers would have been greater in favor of the headers. It was amazing that the Max Wedge manifolds were nearly twice the weight of the HP manifolds! Thank You Again Nick!
I stand corrected. I just reviewed the runs with the headers and the air/fuel really didn't go out of range but for a second or two. So that test was near perfect all the way around. Great job Nick!
I own a 1964 Dodge, with a 413. I was gonna go, max wedge manifolds, for the nostalgic look. But the tests, indicate, more benefits. thanks Nick
Good Morning Nick, Vasili & George. Wow that was music to my ears, what away to start one's day. That sure was one lumpy cam Nick and hey the max wedge was certainly a top manifold. A beaut rumble when idling, the 440 sounds like its not to bad either given you didn't build it either Nick. Till next time stay healthy & happy Guy's.
It looked like the Max Wedge manifolds made more power and torque down low then the headers caught up in the end. If so the Max Wedge manifolds would be better around town. Am I wrong?
No the Header made more torque and HP low and high they're similar from 3500-3600 after that the headers run away with it until the meet up around 5000 the header continue to climb.. The dip in the header at both points I would suspect is a result of the manifold being closer to port matched to the heads. Those dips are where the exhaust pulse shock waves echoes and interfering with flow the most. I doubt most butt dyno's would notice it on the street, the ear dyno would tell you the headers were stronger.
It would have been easier to read if they had used 3 base colors with light and dark for the each pulls plot. You can see it the tabular view of the runs.
Surprisingly good max wedge stuff . And what a difference from HP manifolds . How bad are standard ones one wonders?
Surprising how much power is lost when the exiting exhaust gas collides with the gases already in the manifold. Kinda like a funnel..
It would be interesting to put the car on a chassis dyno once the motor is back in the car.
Max wedge manifolds definitely have a cool factor.
Great video! Was debating on switching, this really helped pulled together a great comparison. Thanks Nick!
WOW 75+ hp is radical for just bolt on's
Okay, convinced , headers for my 440 TNT for sure , Thanks Gang..
motor with the original manifolds is kind of a pooch
Morning Nick great video!! I would definitely use the max wedge they always look great when you pop the hood and they also work!! Stay safe Nick keep up the good work, I still love the FF8 green on that 70 Challenger.
Thanks 👍
an R.P.M. Intake and headers are 3 tenths quicker due to300# weight reduction
I love the max wedge manifolds but number don’t lie great video nick
And Max wedge manifolds are crazy heavy
Those max wedge manifolds look better under the curve!
There is a set of Max Wedge exhaust manifolds on eBay right now for $3500 (U.S.) plus $84.42 for shipping. There is a second set for $2999 + $199.
@@Russeljfinch: Yeah, there were a few more at somewhat reasonable prices, but, still...
Awesome job.. Nick great job thanks very much.
toldya nick was a doctor only nick does surgery on mopars only
Always had a soft spot for the Max Wedge ones....especially on early 413's and 426's!
Keep up the phenomenal work gang! 🤜🏻🤛🏻🍻
Love those Maxie manifolds ! My flat decked 383 magnum you dyno'd pulled 438 hp with 1 7/8 headers.. love to see those manifolds under the hood of a 1st gen D100 !
Great ideas in this testing of different exhaust set ups! I wonder what shorty headers would have been like? 🤔
More HP as it warms up is because of oil temperature is getting warmer.
NICK,
RE : IT SOUNDS LIKE A HARLEY DAVIDSON...
QUESTION-
What vegetable does a Harley sound like?
potato...potato...potato...potato...potato...potato...potato...potato...potato...
!
OURv. I should have known. Thanks.
Nick, those manifolds remind me of an intake manifold a guy showed me a long time ago. I think he called it a cross ram. One 4 barrel carb set some where around the left shock tower and fed the right head. The other carb set near the right shock tower and fed the left head. Do you recall anything like that? These were cast iron and for a big block mopar. I saw them back in 1971 or 1972 and he had them for a 383 Roadrunner.
Bruce. Cross Ram intake manifold for drag racing. Yes, I have seen them.
GREAT TEST, MAYBE LARGER DIA HEADERS WOULD HAVE BROUGHT THE HP UP SOME MORE.
Great sound. With my subwoofer, I feel like I am in the dyno room. Nice Rumble on this 440. Max Wedge should be going on the Kowalski.
Boom!
Awesome as always Nick! Love the sound of a V8 with a big cam. Music to the ears.
Nick what heads are on that 440, I know they are stock iron , but what number , I don't recognize the end casting , but it doesn't have core plugs on the ends , 516 ?
John. Mid sixties. probably 516.
I bet some aftermarket heads and bigger carbs would really produce some good numbers with that camshaft . Headers are a must .
Yup told ya! Dr Nick there he his!!!
Great episode!!
Love watching you Nick, we're cut from the same cloth! Ill build anything also but love 440s BIG cams work! Hearing it go from "lope" to "chop" periodically Brought tears to my eyes! Before he passed from cancer My father and I ran a very similar 6bbl motor in a 4680lb with driver 68 monaco (13.41 @ 109mph) that was the winningest car at Osceola indiana dragway for years. CC'd at 7.75:1cr 324/.552 duration 108 ctr hyd. Liked NO more than 87 octane and lots o timing. Going to cheap headers from stock manifolds with cutouts was worth exactly 1 second at the track! Kept going bigger in cams car went faster! Ended up with a 312 /.590 mech (265deg@.050 105 ctr) with 1.6 rockers and converted 6bbl wieand x ram with 2 thermoquads same 7.75:1 big valve ported 906s went the exact same 13.4 in a heavier 73 newport first time out dragging cyls 6 and 8 in 2nd and 3rd because of fuel distribution issues. Got it sorted out but never back to track, popped a lifter out of bore due to cheap Chinese rockers, woulda run 12s lifted front wheels about 2". Drove em to work every day and hauled grain to elevator! 13yrs, 2000+ passes no failures. He drilled out lead plugs in end carbs on 6bbl and made new allen idle screws to adjust with flexible screwdriver while on car made a huge difference! Now I sold the farm and am also building a 64 polara but with a blown 528 hemi. Hearing it gave me my heart for this back!
Nick, I was browsing around in the internet today (Sept.20.2022) and ran across an article about the Stage 3 Ramcharger max wedge exhausts from the 1963 and 1964 MoPar drag race engines. The article praised the performance of them, equating them to the best tubing headers around. The article also says they're being reproduced by Mancini Racing and possibly others at this time. Whenever you're doing your next video about 426-440 wedge exhaust manifolds, perhaps you could borrow or ?? a set of them to test. They look like the real deal and for sure would be easier to put on a car than tubing headers. And keep smiling, for it makes 'em wonder what you're up to.
I really liked this comparison test... Now, I'm wondering if these Max-wedge exhaust manifolds are still available... Are there any aftermarket companies that make reproductions of these? It was cool to see Vasilli again when he was working at Your shop Nick... Nick, You are a great employer who gives everybody a chance to learn the trade and then, move-on... Nick, having your shop on a resume, would open-up a lot of opportunities elsewhere for a Person to expand their Horizons... Staying there- would be a good thing too. You have a LOT of fans who support what You and the people working with You do there...This program is definitely a High Point for TH-cam and Canada 🇨🇦....Keep-up the good work!!!
Yeahhh ill be waiting this
👍 👍 Great 😍 🇬🇷🇨🇦@nicksgarageofficial @nickpanaritis #moparperformance #best💥💥💥💥💥
The Max Wedge manifolds did well. They likely won't fit newer cars though. The 1964 - 1965 Street Wedge had its own hi performance exhaust manifolds too, but they won't fit 1966 and newer cars. The cast iron does a good job of holding in the heat and noise. The 440 HP manifolds take 2.5" down pipes, swaged down to 2.375" for the mufflers then to 2.25" tailpipes. The 383 HP and 400 HP have the 440 HP manifolds fitted with 2.25" down pipes swaged up to 2.375" for the mufflers then 2.25" tailpipes. The 440 HP gets Street Hemi mufflers, which are the same outside size as the 383 mufflers, but the 383 mufflers are from the single exhaust cars.
Nick cool as ice stands up calmly stands up and says Fire. Vasillis on it and dealt with! Wicked boys!
Great Video George!!!!!!!
Glad you enjoyed it, Easy. Thanks for stopping by!
Excellent video! Those Max Wedge manifolds were the hot ticket in the day! Very scarce and rare today!
They are or someone is making repop's of them now but they aren't cheap . I would have liked to see Nick use a set of stepped headers as well then take it up a notch & do some main jet tuning because I am sure he would have pulled more hp out of the headers & possibly those max wedge manifolds but being they are so short with no collector I don't think they will scavange the exhaust as good .
@@peteloomis8456 , headers definitely make the most power and torque but I was surprised to see how close they were. I started racing Mopars in 1970 and most of the older cars had already changed over to headers. I always loved those Max Wedge cars.
I have a 1964 Dodge model 440. Black on Black. Running a 70 440 with HP manifolds. I know headers make more power, but the manifolds are so nice with spark plug access and under hood Temps. A ana A Transmission sells the maxi manifolds, but get your wallet out! Nick and the crew, BIG thank you for the comparison video. As always God Bless and create another great day.
Woody.
In the early 80's I ran my orange '70 RT/SE Charger (440 HP2) with 426 stage 3 heads and a prototype tunnel-ram that Weiand made special for me to match the ports.
Took me forever to locate a set of those Ramcharger exhaust manifolds (pre-internet scrounging), and they cost me a grand !!! But they worth their excess weight in gold. 😶
I've owned many hot rod mopars, but i miss that car the most. 😢
Great comparison, Thanks Nick. Seems the headers went out in a blaze of glory... hehe. I have a set of HP manifolds on my built 383. I ported them to the gaskets, smoothed out the curves as they are plenty rough from casting and ported the exhaust end where it meets the pipe so they would match up better to a 2 1/2 pipe. I'd really like to know how much they perform as i removed a significant amount of metal.
Robert. This is why we test before smoothing and after.
Wow. Very informative. Useful info to me too ('65 Coronet,440 HP). I never even knew that a Max Wedge exhaust manifold would bolt up to a stock 440 head.
To make power with hp manifold, or any engine, cam selection is critical. It all works together. The lumpy cam in this engine is clearly more suited to use with headers- which the maxi’s basically are. Notice how max wedge and headers made close hp to each other. Don’t go thinking you’re gonna swap in max wedge manifolds on your mild 440 and get that extra 40 hp . With the right cam, hp manifolds would have made similar power m