BBC-TUNNEL RAM vs THE WORLD! -PLUS BOOST

FULL RESULTS. TUNNEL RAM vs DUAL PLAN vs SINGLE PLANE-496! WHAT MAKES MORE POWER, SINGLE PLANE, DUAL PLANE OR TUNNEL RAM INTAKE ON A HOT 496 BBC? CHECK OUT THE PEAK HP & TORQUE AND WHERE EACH INTAKE WORKS BEST. AFTER THE INTAKE TEST, I ADDED A VORTECH SUPERCHARGER TO THE MIX! HOW MUCH POWER DID THIS LOW-COMPRESSION 496 MAKE WITH JUST 7 PSI OF BOOST?

[@yodawunn6700]

You had me at "it sticks through the hood".

[@TheFarCobra]

I think the most important we learned that standing next to a big block agrees with Brule ... he looks younger and happier.

[@richardholdener1727]

Brule circa 2003

[@Tsalinger]

@@richardholdener1727 I liked the low compression. Same everything with a Q-jet. Truck motor. 454's need a roller cam because of the funky oiling or drilling into the oil gallery with a redirection. Rollers are fine. I like NV4500's behind mild Chevy's in a truck platform. MSD with on the fly timing control and a A/F gauge, all is good. Simple, clean and last forever. Power is nice but sometimes people want a truck with some pop but will last. Low compression big block with 500tq at 2500 isn't bad. I say keep it simple.

[@kylemilligan752]

Mr Holdener please, please,please, do a blow through turbo dual carb tunnel ram.😁

[@homefront3162]

love it ⭐️⭐️⭐️⭐️⭐️

[@stevesolo16]

That is an old-style tunnel ram. A Fabricated tunnel ram will make even more power and torque than the old-style tunnel ram. It does it due to a more direct shot into the intake ports. The direct shot also allows you to tune with your LAMBDA. That allows you to optimize each cylinder with proper jetting. GREAT VIDEO!!! I built a 11:5:1 496 single plane with a 1050 dominator and 2.125" id headers that made 714hp. I'd love to see what the tunnell ram would do on that.

[@Cuttyman9]

Damn! I’m about to pick up a single carb tunnel ram for a 049 oval port 454. That’s impressive

[@RustyChevy]

I'm so glad i found this channel.

[@deanstevenson6527]

RustyDuramax : Me too and 83k others. Well presented, simple and Steve and Richard...doesnt matter about hair; all that matters is that you share!

[@micmalone6722]

Twin turbo, tunnel ram each turbo feeding it's own carb. I would love to see something like that! Great videos Richard keep them coming.

[@raypingley5733]

Thank you I have always had tunnel rams on the street and in my drag car. Always said they make more power every body said I was crazy lol

[@DBSSTEELER]

That’s a 700 hp motor easy with 9:1 compression. That kind of power under 8 :1 is amazing.

[@tunerdadtunerdad7927]

Uh....No

[@chasewebber4316]

@@tunerdadtunerdad7927 did u watch the video?

[@DuneWest]

I could be wrong, but 1-point of compression ratio is probably equal to about 25-30hp or so, yeah???....therefore, I highly doubt it would bring the power up to 700hp with the single carb intakes.....the tunnel ram, yes...but the single plane intakes, no.

[@SuperDave227D]

Now I’m SUPER CURIOUS what my forged 496 stroker with 10.5:1 Dart 308 race series aluminum heads Howards full roller 296 I/ 308 E .640 / .640 lift 114 CL, dual quad tunnel ram jet boat engine will make!!! People kept discouraging me and saying “you’ll be lucky to get 600hp”, or most people will always over estimate their real power, never trust what your cam guy says, etc….. the guy at Howards- that told me what cam I needed said I should be a solid reliable 700hp+, and no one else agreed with him- even my engine assembler! After seeing this I was crazy excited to get my 78 Sonic jet boat in the lake and GO!!!!!!! Absolutely amazing videos you put out!!!! Love them!!! THANK YOU SO MUCH RICHARD!!!!!! YOU MADE MY WHOLE YEAR SEEING THIS VIDEO!!!!!!! MORE, MORE, MORE!!!!!!

[@marklottero5345]

I love that Vortech blower!

[@utahcountypicazospage5412]

In my opinion I would always use a single plane there is enough torque in a big block to be able to lose some down low and let it pull up top

[@75zl1]

@shane a victor made more power on my 489... from 4k up

[@ACatKrom]

a little different in a boat

[@75zl1]

@@ACatKrom That is true, you're in the midrange for that.

[@GJ-DT]

A ported dual plane on a 454 i think would be best option.

[@nellyfarnsworth7381]

You are CORRECT

[@chrisholcombe137]

Just one old summertime story from the lake in southern Oregon and a 1965 Fred Wickens flat bottom V-drive with a 68 396 Chevelle Tunnel Ram dual 660 center squirt natural aspirated taking out a Keith Black 454 Blown on water ! best of three ! lost three and he was sceeming he had a 100,000 into his engine ! Can't wait to get her on a Dyno !

[@jeremymurphy7320]

What did we learn? We learned that Brulé had hair back in the day.

[@SweatyFatGuy]

I'm old enough to remember when he and Freiburger had hair.. David had long hair when I first became aware of him. I am also old enough to remember Gray, Ro, John Dianna, and others. I miss reading Gray's articles.

[@shanerorko8076]

You mean lack of it.

[@psychoholicslag4801]

I was going to say the same thing!

[@gmcnelly2468]

good to see Bruhle (?) is still around!

[@hom240]

Your cam chose is an excellent cam. Any cam in a natural exasperated engine that puts the peak torque in at 43-4500 rpm's and peak horsepower in the 63-6500 rpm's is giving the best of both worlds. Lower rpm cams will product more torque while giving up HP. Higher rpm cams make less torque, but more HP. Average out torque and HP. Add the resulting numbers together and the combo that gives you the highest number is the best combo.

[@conservativecrusader80]

Great content Rich but do a similar build with E-85 and find out just how much compression it will support safely, hopefully at least 14:1, with E-85 readily available in most of the country its a great option if someone was wanting to only run NA. Big inch, high compression and the engines with high CR always sound better too!

[@danielsullivan9865]

👍

[@douglasm3310]

So as always, the answer is still boost is best ;)

[@jeffschwartz5199]

I can't get over the tinkering you do ! Love it !

[@dilsher12]

I've always wondered how the old school BBC would do with a like modern LS style long runner EFI intake manifold . Because most aftermarket intakes like FAST make good power down low and carry it pretty well uptop as well . Something like the cross ram from edelbrock would be make good power on the big block chevy with having equal length runners and lower hood clearance than a tunnel ram .

[@brettanderson6743]

Just an opinion. Probably won't make as much difference as you think. The old BBC heads don't flow particularly well whereas the LS heads flow quite well. I think good aftermarket heads with LS style intake and injection would definitely make some good power down low. Highish comp would also be needed to be effective.

[@MyLonewolf25]

Your question is answered by the 8100

[@cuzz63]

There is a later model BBC that uses a ramjet EFI.

[@shadvan9494]

back in the early 90's I had an 1976 Hondo SK Drag Boat. with a 427 L88 Sporting an Edelbrock Tunnel ram, a set of highly modified 625 CFM Carter AFB's and a set of velocity stacks. sold the boat to a guy that just wanted it for the motor for a corvette he was restoring. Turns out those L88s was pretty rare. all these years latter I regret selling the engine more than the boat... I had to rebuild the V-drive and water pump and repack all the shaft seals every spring. it also did not like MSD spark boxes for some reason, I must have gone threw a half dozen MSD boxes before I found an old Mallory Hi-Fire. after I put the Hi-Fire on I never had to touch it again. that engine was a screamer. It smoked every boat that I ever raced with it. it would launch like it was fired out of a gun, the rpms would keep climbing as long as you kept your foot in it. it saw 7000 rpm a few times before backed out of it. it was deafening how loud it was a 7k. but it was more than that. you could feel the thump of every piston as soon as that engine lit off. I have never felt any quite like it before or since. I currently run a 1971 Camaro SS 396, it is very fast, but its not the same as that L88. hmm... maybe I should build an "L88" with a ram for my Camaro.

[@richardholdener1727]

THE L88S ARE BIG $

[@shadvan9494]

@@richardholdener1727 yea, I wish I knew that back then. when I bought it I was told the engine came from a corvette race car, it was in pretty rough shape. I only bought it cause I though it had bow tie aluminum heads. one of the aluminum heads had dropped a valve seat, and damaged one of the pistons, but had not hurt the head to bad. I had the heads gone threw they were a hot mess. needed all new exhaust valve seats and all the guide needed to be done, the rest of it was in good shape. I had the engine freshened up at the local machine shop. had it boarded .030 to clean it up. and a new set of TRW 12.5:1 pistons. the pistons themselves were weird, this is the only factory engine I ever seen that had bushed wrist pins and locks. anyway the machine shop told me it was an L88 and that those early factory aluminum heads had a tendency to drop the valve seats on the exhaust side. the old guy working there had done a couple of L89 396 heads a few years back with the same problem. Now, 30+ yeas latter and I have seen those L88 cars go across the block at Barret-Jackson or Mecum for some stupid amounts of money and I kick myself for selling it...Personally I hope it ended up back in that old corvette racecar. something that rare deserves a proper home, and I count my self lucky to have actually experienced one at 7000 RPM.

[@scottsigmon926]

Richard, do the twin turbo 496 with the tunnel ram!!!!! That’s cool!!!

[@theozman38]

Boost addict Richard. I’m glad it’s motors and turbochargers for you.

[@richardholdener1727]

YOU GET BOOST, YOU GET BOOST, EVERYONE GETS BOOST!

[@theozman38]

Richard Holdener😂🤣😂. Two is better than one. Lol.

[@tenorhowlermonkey3454]

Don't know how well it would work but a Tunnel Ram with 2 Q-Jets would sound great I think.

[@lloydholt6511]

Hard to beat the look and performance of that tunnel ram intake. But for the street dual plane would be the way to go for me. Tuning is just way simpler. As always a great video. Everyone will have their opinion and everyone will be correct for their application.

[@xXcashXx3]

in conclusion theres nothing like a BBC

[@Morpheas001]

That's what she said

[@YZFoFittie]

As long as you ignore anything LS...

[@AB-80X]

@@YZFoFittie Here we go... I read the original comment, and instantly knew that one of these responses had to be some dingbat whining about the LS.

[@YZFoFittie]

@@AB-80X yet you dug up something over a year old to whine about? I love BBC's, but modern cylinderhead tech coupled with computer controlled ignition and fueling has made LS and LT motors a much better bang for the buck. Tell us where the facts touched you...

[@scottm7341]

That first graph is the widest, flattest torque curve I've ever seen.

[@richardholdener1727]

Torque plateau

[@charlesgalea69]

Thanks for the awesome video Thanks for the awesome information really appreciate it keep up the good work enjoy watching your videos from Melbourne Australia 🇦🇺.

[@davidreed6070]

I'd like to see what would happen if the carbs would have had annular discharge boosters. Great stuff as usual

[@rodneyschnelle315]

As always, another great informative video. Now you need to boost the tunnel ram. I want to build your 565 with the tunnel ram and a turbo. I am impressed with that tunnel ram. Never thought it would make good power, they were always the cheapest one you could buy. WAY back in the day I bought one from PAW. They sold it in a kit with two 600’s. Had it on a basically stock, canned up 396.

[@richardholdener1727]

I remember those

[@rodneyschnelle315]

Richard Holdener never was fast, but a lot of fun with a stick behind it. Had in a few vehicles before spinning the rod bearings, yes multiple. Hv pump and stock pan don’t go together. I was 19 and learning. Funnest car it was in was a 55 gasser. Man I wish I had that back.

[@supercharged6771]

So glad ya threw in the supercharger info...

[@calvinmathers]

Yes Richard it's(tunnel ram)worth it

[@toddformanek8495]

I dynoed my 540 with tunnel ram on both pump gas and e85. At 10.8:1 (lake water cooled) I didn't have the compression to really take advantage of the e85, but the torque curve was amazing!! Over 700ft/lbs from 3k-7k

[@AB-80X]

Jet boat?

[@toddformanek8495]

@@AB-80X yes, 19ft Daytona

[@3rdGenGuy]

Just a tip, a few mods to your room and mic would go very far at increasing Audio quality.

[@derekmelton3915]

Would love to see a test on engines honed and bored with torque plates to see if they really are worth the trouble

[@homefront3162]

As a teenage hotrodder in the 1980's I traded a m-21 transmission out of a 67 Chevelle for: 1969 Corvette 424HP Tripower intake (COMPLETE MANIFOLD TO AIR CLEANER) as well as a set of 427 Aluminum Heads (Perfect), Steel Crank, Rods and Brand new in box STD bore 427 12.5-1 Pistons. Used some, sold some PHUKKK if i had kept that stuff

[@brettanderson6743]

That torque curve is insanely flat. Short shifting all day with a stick shift!

[@lindsaymcpherson4744]

Great video guys now how bout a 10.25:1 496cid BBC with the good oval ports and try tunnel ram vs kinsler staggered stack injection. Your dyno will cry for mercy !!

[@keithdaniels1994]

Dang I was hoping to see a tunnel ram with boost.

[@williamking8684]

a tunnel ram with a two holley snipers has incredible street-ability

[@HoosierDaddy_]

The answer is always "a tunnel ram". There's no other possible answer!

[@HoosierDaddy_]

@@bigboreracing356 yeah, but, tunnel rams look too good!

[@Jubr123]

No Prep Stretch It’s a no-brainer that Boost will allways make more power than N/A on the same application. 😅

[@thetriode]

That tunnel ram ROCKs. The only problem with one is packaging. I'd be quite happy with any of those selections though, I'd just gear as needed and change the shift points.

[@scottbrooklyn2995]

Another great test

[@mikehill7951]

BBC torque my Elcamino came with a 13" TC which I thought was odd, till I blew up my first 2 11inch street convertors, next I put in a TCI street convertor which did not blow, I had a tight 10" local buildt, which is still alive years later .

[@mortensandmoen5208]

Remember in a boat things are different, you only have 1.gear. So you got to have torque in low rpm to get the boat out of the vater to plan. If you dont have the torq you need, you got to have a smaler propell, and you lose top speed. Så a verry torque engine with a flat torque kurv is important.

[@AB-80X]

This is a jet boat. Totally different that propeller boats. They rev up super easy.

[@mikehill7951]

30 years ago Hot Rod did a BBC build up of various combos the Dart single plane with a CC 306 solid roller cam came out on,top I bought the Dart ,it really came on after 5000 rpm, but ran poorly in the winter so I went with Victor jr. On BBC torque you have to be careful, my vechile would often break loose in turns or curves

[@toddformanek8495]

I'm a jet boat guy like Brule, blowers and tunnel rams rule!

[@mgbchuck6527]

Thanks, like it (in an earlier life was BBC guy), now sbc little car guy (there is a guy in NY with a 632ci BBC in his MGB though and a 540ci one in Florida), might be overkill

[@Prestiged_peck]

No, that's just enough, you don't get into overkill until you get into the 800 cube range bro.

[@mgbchuck6527]

@@Prestiged_peck unsure about that, a MGB is a 92" wheelbase little car, mine just has a 500hp sbc@2350lbs and is seems pretty sporty, 700hp/800hp might be dangerous (theres been 2 Hellcat Miatas built, both crashed)------------too much is about right usually though

[@Prestiged_peck]

@@mgbchuck6527 if you put it on the right tires and put the right driver in the seat, anything is possible?, but yeah I wasn't too familiar with the car, if it's that short 800 is definitely overkill on most street tires

[@mgbchuck6527]

@@Prestiged_peck kzbin.info/www/bejne/Y2LElqp4nL5-mrc My MGB

[@Prestiged_peck]

@@mgbchuck6527 nice bro

[@casey7091]

.652 lift cam is small for a big block... I got a .600 cam for my 496 lol also only have about 9:6:1 compression I’ll have to see how it runs

[@AB-80X]

It's for a boat.

[@craigchiddo2794]

Put a set of 300 ovals in place of the rectangles with the 112cc chambers and a single plane and it would make a great street strip engine

[@gregleenyit]

I learned that Tunnel rams rule! Also everything is better with Boost!

[@SoLSamuraibloodblade]

The O in your wrong cam shirt should be a cam lobe and you could have it pushing the A in cam down.

[@richardholdener1727]

nice

[@pmd7771969]

Lots of tunnel rams are rated at 2800 to 3500 to get enough airflow n a. I've had a few. You need to force induction them to get enough air to fill that volume. Bloodviking

[@worldofwoodchip]

I'd like to see the low RPM test on the tunnel ram with a pair of 600s. Bet that makes more low end than the dual plane

[@AB-80X]

Question. How much time does your engine spend at full throttle while running at low rpm?

[@bigredracer7848]

First 👍's up guys thanks again for taking us all along with you for the great show 😊

[@bigredracer7848]

you didn't adjust a secondary opening time on the carburetor cuz you could have prevented that by opening the secondaries later and leave in the primaries open sooner

[@richardholdener1727]

I'M NOT SURE YOU KNOW WHAT YOU ARE SAYING

[@bigredracer7848]

@@richardholdener1727 Not sharing what I'm talking about I think it's better to say you don't know what you're talking about because you can delay the secondaries opening up by adjusting holes on the side of the carburetor I don't know when's the last time you ever looked at a holley our even adjusted one

[@michaelangelo8001]

😉👍 Tunnel Ram 😁👍

[@ducbc9933]

I've got a side question for you. I'm building a 496 for my C3. Having troubles trying to decide on a cam/lifter combo. All I hear from Multiple people at the hot rod shops and my engine builder are about how Crappy all these Roller lifters are and to Not use them. Do you know why they say this? Do you have Any long term test on say Any Hydraulic roller lifts that can guide me in my build? Thank you for the great videos.

[@ducbc9933]

@@richie8538 I Hear Johnson are pretty good but I have no facts on Any of the brands. I'm not really concerned about the money as long as its done correctly the first time. So far the only constant from everyone is make sure they are Bushings and not rollers so when they Inevitability fall apart you don't ruin the engine.

[@richardholdener1727]

Rhodes liter is flat tappet-hyd roller would be better

[@crusader152]

496 is a good choice cooling wise. You gotta think about your driving style, power brakes etc. I build cars and I use Howards hyd roller lifters. I think theyre made in house. Or if you like to work on your stuff and you dont want any problems, go solid roller. You just gotta go thru the valves every once in a while.

[@kevinarbery2782]

@@richardholdener1727 Good morning Richard ! I hope you have a chance to read this , I’m just guessing on how to contact you , so I thought I’d give it a try through one of your video’s so I have a 496 & I purchased a set of Qualfast heads , part number 15-132722 oval port My readings on the head flow bench are .1. 75.3 .2 149.3 .3 216.5 .4 261.2 .5 289.5 .6 305.6 6.5. 312.5 .7 318.5 .8 322 Intake is 327 with a 126 chamber cc Exhaust is 123 angle port , I know you said in the passed that you had never tried Qualfast , but if you can understand my readings , as I hope I’ve put it down clear , please let me know what your thoughts are , thanks Kevin

[@WhiteJameson24]

I wonder how many carb spacers you could stack on top of the tunnel ram before the power would fall off

[@SuperDave227D]

I had to install 2” spacers under my 4150’s to make the linkage and fuel logs all clear my tunnel ram………… I’ll let you know how it runs!

[@jesserasso1042]

And you can run twin turbos on the tunnel ram one turbo to each carb

[@Turbo_Todd]

They make a single carb top for the tunnel ram base. Just another way maybe

[@TYLERbuilt]

I’d love to see a short stroke small block with a tunnel ram and two 660’s in one of your videos!!! Going to be building a similar combination in the future!

[@bcbloc02]

What about a big block cross ram?

[@rickhopfinger]

Can you twin turbo the tunnel ram efficiently

[@richardholdener1727]

yes

[@normbarrows]

take the tunnel ram to the next level: go offy, add their IR adapters, 2 carbs w/ 4 corner metering. 8 barrels, 8 runners, no plenum, no BS. killer torque, crazy power.

[@timtaylor6147]

Here's the deal on turbo engines and chamber volume. Bigger chambers and dish pistons lower compression. But that allows for a larger volume of mixture to burn More air and fuel More power. Now tune it.

[@patrickmontgomery6353]

I've always heard "hood clearance issues". I've never understood what the issue is with cutting a hole in the hood...

[@jaredfarney675]

I did some research on the internet and this is what I found: " you don't need no stinkin hood"

[@brettanderson6743]

I wonder what a cross ram style ram intake with quad side draft webers would be like. Would it act like a tunnel ram? Would fit under the hood then.

[@richardholdener1727]

IR intakes act differently

[@brettanderson6743]

@@richardholdener1727 Your are right of course. I was probably a little excited and was thinking of volume of air flow and not of runner length. Given that side drafts already add to effective length on top of the long runners it would be all lower rpm torque. Solution? BOOST!! Love your videos!! Keep up the great work!

[@joeyjojojr.shabadoo915]

Steve looked so young at the Dyno...LOL. This must have been a while back.

[@460FORDMAV]

Hi Richard. I Have a idea. Can you make a test just using different rocker arm ratios on intake and exhaust? Let`s say 1.73 intake and 1.8 exhaust ... thanks

[@richardholdener1727]

I've tried that several times

[@460FORDMAV]

@@richardholdener1727 thanks for your attention. Had sucess or it depends on how big the camshaft is? Thanks

[@austintyler7991]

Sweet Bejeebies. Nice motor. Seriously thinking about max torque on (gear driven cam), 1966 tall deck BBC 366. Has 11,000 miles on it. I'd like to improve its torque. Thanks brother New subscriber

[@richardholdener1727]

WELCOME

[@timothybayliss6680]

Richard, have you tested a holley high ram against a Weiand HI-Ram? Looking at this tunnel ram it's pretty old school with the inverted D shape ports and bent runners. A couple Windsor guys have gotten as much as 30 horse power in back to back testing of both intakes. Granted it was on a serious street machine but gaining 2 tenths over the best run on something that already runs 11s makes me wonder how much better is really is.

[@richardholdener1727]

I have not

[@bigkellyg5947]

I am pleasuring myself, watching this video. BOATS RULE. Now if you would take the 496 and bump the compression up to be able to run premium pump fuel with the tunnel ram. Is the sweet spot 10.5:1 ,11:1, 11.5:1 or higher to get the most top end? Then, like you mentioned, do a comparison to see the difference with 540. The same setup. I'm a boat guy. To build a 496 or 540 is about the same money. But the question is; is it really worth it in the numbers? I've seen a lot of less than 500ci motors go really fast. Bigger is always better is not always true. On my shelf I have a Banks twin turbo setup, and a 671 Cragar blower. The turbo setup has the Rayjay's that came with the original setup. They are small so watching you has got me to think maybe upgrade/upsize the turbos with a 496 would be a good boat motor for my hydro. This video got me fired up. Thanks, man.

[@SuperDave227D]

I can agree!!!! I’ve been building my 496 for my jet boat and almost done! Nearly identical cam (mines just slightly bigger-296/ 304, 640/ 640, but also has 10.5:1, Dart aluminum 308 race series heads ported and massaged, and dual 750 dp’s), and I went nuts when I saw this video!!! It got me super excited and ready to hit the water!!!!!! Wish KZbin comments would allow short vids or at least pix in replies- would love to see and hear your hydro!!!

[@gordo66061]

No animals were harmed in the making of this video

[@nellyfarnsworth7381]

Except the chicken that tried to cross the road.

[@justinfee819]

The only thing better than a tunnel ram is a super charger absolutely 👍 lol 😂

[@Belktronix]

At 9:39, what exactly is that around the carb? i'm guessing a cover seals it up and has the snorkel for a boost pipe?

[@karlmoltzan6196]

Richard what happens when you use a tunnel ram with a blower?

[@richardholdener1727]

good stuff

[@AB-80X]

Check engine masters. They did it earlier in the year.

[@karlmoltzan6196]

@@AB-80X I am in Peru. Motor Trend on demand in not avalible here. Only what i can get 8n youtube.

[@rafatrill]

Someone should make a tunnel ram for a LS! Maybe with twin throttle body's? 🙄🤯😳

[@richardholdener1727]

LIKE THE HI RAM

[@chasewebber4316]

Edlebrock rpm air gap....junk castings. Had to send two back because holes were missing and misaligned on both sides. That was on both manifolds too. Anyone have the same problems? Idk how it happened to both intakes.

[@cam3002]

Do you have a way to measure BSFC (Brake Specific Fuel Consumption)? Think it would be interesting to highlight the efficiency of the different combination and how they correlate with torque at a given RPM. Keep up the good work.

[@richardholdener1727]

yes-the dyno does that

[@jonathonhammonds4087]

Have you run the cheap aluminum ebay bbc heads on the dyno. Just wondering what they are like

[@Blownbbc496]

I am building a similar steet/strip 496 with the YSI blower and carb box, solid roller blower cam, 315 aluminum heads. I bought a blow through Quick Fuel 750 carb they said would work great. I think the carb is too small. I think a 950 might be better. Suggestions?

[@conservativecrusader80]

It would be great to duplicate this test with some decent compression 11:1-12.5:1.

[@leifmariusmadsen1]

No one has done TT or/and centrifugal into a traditional tunnel ram with matched blow through carbs & hats on a bbc. How can we know if this epic combination lays down hp on the Dyno? What if it can be done? What if it can't? Who better for the job than @Richard Holdener!

[@richardholdener1727]

westech just ran a twin turbo 540 with a tunnel ran and twin draw through carbs

[@ianmcfarlane4257]

I'd like to see a test between a single 4 tunnel vs a 2x4 tunnel. I want to see the far corner a/f and egt ratios compared to the inside 4 cylinders. Will a single 4bbl tunnel ram hurt the engine? Weiand makes both tops - it just needs fancy header data collection. While I am dreaming how about propane and turbo boost like AK Miller did 50 years ago.

[@grren1782]

You can't hurt an engine with an intake manifold

[@mylanmiller9656]

@@grren1782 I own a 351 Cleveland Tunnel ram from back in the olden days. I also have both Dual and single Quad tops. When I first Acquired this intake in a trade, it came with the Single top. When I tested the Single carb I could never get the two Front Cylinders enough Gas, They always run lean the spark plugs were white. some of the guys I talked to said just run it they make good power but the white plugs scared me. My combination made the best Quarter mile time With Two 750 4779 Holley carbs.

[@richardholdener1727]

a single-center-mounted carb does not work well on a tunnel ram unless the top is modified and elevated usually

[@grren1782]

@@mylanmiller9656 there must have been something wrong with the intake then. It wouldn't be a problem if there was equal length intake runners

[@grren1782]

I wrote that before he replied, whoops

[@andrewmyers5299]

How many pounds of boost before you get the block o ringed? And what size cam would be happy in a 454 with 340cc heads 8-1 compression with dual plane going in 3500 pound truck with 411s and 3800 stall and 28inch tall tire. Adding about 8 pounds of boost from a torque storm supercharger.

[@richardholdener1727]

smaller than what we used here-not need to o ring the block with a single torque storm (it will make only 750 hp or so)

[@andrewmyers5299]

@@richardholdener1727 thank you. knowledge is power and you are very knowledgeable about this stuff. Do u have a recommendation on a cam? I have a 276/282 .241 @.50 and .249 @50 on a 110 now. It only makes 400 hp and 400 tq. I'll be adding a torque storm this winter to it

[@NA-sd1fo]

But what about the tunnel ram with the 4” inch spacer in the center?? My tunnel ram has 11” runners now. Will it help?

[@richardholdener1727]

SPACER FOR THE PLENUM OR RUNNERS?

[@NA-sd1fo]

Richard Holdener spacer for the runners! I found a shop that machines a 2” and 4” spacer for the runner of Weiand tunnel rams. I bought it for shock value originally (wanted the tallest tunnel I could get) and now I’m REALLY curious to know what effect that 4”s will have on the power curve.

[@oydina-leebanks534]

what would be a good tunnel ram carb size on a 500 HP 462?

[@joshshelby7322]

I wanna see the new ls 496 8.1 with some boost. Its got to be built tho they cant handle the power like the 4.8, 5.3, and 6.0s. Do stock, stroked 511 or 540, then boosted that be some good shit

[@rokkebill]

Happy to see this test ! How do you like that carb enclosure from vortech ?

[@richardholdener1727]

worked well-pain to do jetting though

[@Nanaki1422]

What are your thoughts about a low profile single plane like the Torker II? For people that don't want cowl hoods.

[@richardholdener1727]

look at the Ford intake test video-rpm vs torker vs vic jr. vs perf

[@dewayneboothe5910]

Have you ever considered adding twin turbos on a tunnel ram with dual blow thru basically run the cold side from each turbo to an individual carb each turbo has its on carburator. It hit me while watching this video.

[@MattD01]

I realize this is an older video but I'm still hoping to get an answer. You said "if you Really wanted to make some power you would run a 275/282 or 285/295 cam." My question is would you change the LSA?

[@richardholdener1727]

yes

[@MattD01]

Ok thank you for your reply! What would you want the LSA to be? Thank you for these videos and the information you share with us! It's greatly appreciated!

[@angelovasilikos7980]

Crazy how it list torque with the single plain and it was still above 500 on a mild stroker. Awesome video

[@douglasgauvin5906]

Richard can you do segment on stack injection on the 496

[@Val_Killmore]

I always wondered what it would be like doing a blow through on a dual carb tunnel ram and if it would be more efficient to run a single scoop with boost coming in the front or with something like twin turbos each feeding one side of the manifold

[@chuckhawes7519]

Do this with a built 440 base mopar please.

[@YZFoFittie]

Why would a blow through carb cool the charge more than a draw through?

[@ivancolesnic]

Looking for a 351w tunnel ram. 393 stroker. The only ones i can find have a very big open plenum and short runners, will it work well?

[@karter9908]

This begs the question:. Why not build/ test a copy of Mopar crossram manifold from early 60s, to keep it under hood but get tunnelram results???🤔🤔🤔

[@richardholdener1727]

That's way longer than a tunnel ram-but very cool

[@karter9908]

@@richardholdener1727 you get the idea....😁

[@karter9908]

Length can be tailored to match/copy ram in volume-length. Lots of work to custom build a sheet metal one-off. Hmm...I just might. So much more to study/ test. Tall spacers under single 4bbl....etc.... I am retired,and Very interested!

[@outlawofga]

People are starting to do what I been doing for over 20 years... Tunnel Rams have equal length runners compared to the other intakes.. They sit high above the heated engine.. cooler fuel makes better power... Each cylinder has it's own jet as well as it's own idle/air screw... The reason tunnel Rams got a bad name was because people couldn't tune carbs properly.. they would mistake a bog for too much fuel.. when in reality it was going dead Lean !!!! They kept pulling jet until they declared The tunnel Rams faulty.....If they had only knew the power they was missing....I recommend a tunnel ram over anything if you got room or cut a hole in the hood.... From mild to wild The Tunnel Ram is KING. !!!! Tell them old ass uncle's to sit down and hush. They don't know what they talking about when Bad mouthing the TR 👍😎

[@B0RN2RACE100]

It’s funny seeing pictures of Steve with hair