292 CLIFFORD INTAKE UPGRADE

FULL DYNO RESULTS. 292 INTAKE TEST-2 BRL VS 4 BRL! HOW MUCH POWER IS A CLIFFORD INTAKE UPGRADE WORTH ON A 292 CHEVY? DOES IT REALLY NEED A 4-BARREL CARB. WILL A 500-CFM, 2-BARREL CARB WORK? HOW MUCH POWER DID WE GAIN WITH HEADERS AND A CLIFFORD INTAKE FROM STOCK?

[@ChipsAndSparksGarage]

Maybe only 20 HP, but the bling of that Clifford is good for the self esteem of that little Six.

[@scoutdogfsr]

292c.i.d or 4.9 liter is not really small. Not big, but not really small either.

[@needmetal3221]

20 horse n.a. is respectable

[@ChipsAndSparksGarage]

@@scoutdogfsr I had a 63 Falcon with only 144 cid. Now, that was small @ less than half the size of the 292. I should have said, small, relative to the other two motors, in this “Other Guys” trio.👍

[@MrTheHillfolk]

@@hendo337 heck yea , it shows how much of a choker the stock one is.

[@scottworelds2933]

20 HP is a lot at 150hp

[@guyconnell2250]

Can't wait to see the cam/head upgrades

[@richardholdener1727]

none of what you just said is accurate

[@lb9gta307]

@@theeoddments960 he just got this engine last month

[@joncloud2114]

@@richardholdener1727 I'd like to see you build a BBF to run on propane and then turbo it. .. I think it would be a cool project.

[@kendalesechler391]

Richard Holdener but the turbo on with the 4 barrel manifold and see how that turns out

[@w41duvernay]

Now you can take advantage of a cam swap in. I am curious what year is the 292 is from. Low compression version will make cam swap harder.

[@RaceRabbit]

Absolutely love the 292 content

[@Tanner731]

I hope the 292 content means the jeep 258 and 4.0 are coming in the future

[@jimrohrer2751]

Really love this series. Some of the other "other guys" are kind of a no brainier.... The Buick, Pontiac, Cleveland stuff, etc. They all made massive power in their day. This little guy.... He was worked, tortured, pushed... The love he ever got was an oil change... If that!!! Great stuff you're doing. I can't wait to see a 300 up there. I know I'm not alone. 👍

[@dannoyes4493]

I'm finding this more interesting than most engines.

[@InuranusBrokoff]

There's something special about those old sixers. Love the way they sound at idle.

[@dennisyoung4631]

Long motors, for long runs? Have had a Chev and Dodge with long motors - the Chev was a smaller one that looked like this one, and the Dodge leaned over…

[@christianallen9653]

I really want to see how Tom's intake manifold does. I love watching you mess with this 292 and it's fun to see how she does

[@charleskelley5400]

Yes me too I got one in going to put on my 250

[@gadgetmanhookupify]

@@charleskelley5400 how did it go? I'm debating on the Clifford. Only because I don't want to add hot water for heat.

[@lonnieopp8198]

now for a nice rebuild, higher compression mild port and mild cam

[@ypop417]

When I was racing in a class that only aloud 255 CI 6 cylinders we would cut out the bolt boss on the intake and use cap screws this improved the airflow quite a bit. (used pipe plugs to plug the tops)

[@KlyfflovesShelby4ever]

@@ypop417 what do you mean I have a 292 and I want to do this.

[@DG-ox6bg]

All petrol heads love the sound of a revving engine! Dyno runs Rock! Keep them coming 👌

[@xmo552]

🐊

[@samb198055]

I had 1970 nova straight 6 with 2 speed bought 1800 dollars in 1996 I like the stockness but to get it to burn out I told my pen pal from Australia what I like to do get it to burn out and keep it stock. My pen pal got me Aussie speed intake and I purchased a Paxson super charger kit. It sounded like a mad tractor but it would do burn outs for ever.

[@grantmiller5921]

Next up Buick straight 8.

[@jacobmoses3712]

That would be kind of scary, given how long the crankshaft is but there is a guy who runs one at Bonneville

[@grantmiller5921]

Jacob Moses the bonneville car is what peak my interest. Cool motor and I’m curious about its potential.

[@AreaThirteenThirteen]

Some of the engines may be old but this content never gets old...please keep these tests coming!👍👍😎😎

[@markrein7282]

Now you need to do a similar test with a 300 cu inch Ford I6.

[@GreatLakesLogger]

I really like this series. Most of the time I would be bored with this little power 😜

[@Brock_Landers]

Man I can't wait to see how that 292 does with a Comp cam, a good port and polish on the head, maybe some oversized valves, that Clifford intake, and that 650 Holley. I think it'll be a strong inline six.

[@kylemilligan752]

I've never owned a chevy 6 but this is great tech Mr Holdener!!!!! A great hands-on fabrication and dyno experiment!!!! Thank You Sir!!!!

[@timdontwannasay5889]

All eye openers! I'm all ls but I was raised on a lot if these "other guys" and this Channel has been changing my mind on what they could take!

[@bobgyetvai9444]

I had a 76 Nova back in the day with a 250 6cyl , 292 dump truck exhaust manifold , a Offy intake with a 390 cfm Holley and a curved distributor . Sounds crazy but it won many a race WAY OUT of its imagined abilities . Newer Trans Ams , Z-28s , 302 Mustangs all stock got a view of my tail lights . I never could understand why .......???

[@rfschaum]

Im running a holley 390 4 barrel, with a offenhauser intake and headman headers. 650 cfm is way to big for a 250 or 290 inline. Also running msd. Other upgrades that help these engines is a port lumps head kit that removes the bolts in the intake runners and the typical cam and larger valves.

[@TyphoonVstrom]

Yes, a 390 or 465 is great on a mild six.. Really helps driveability as well, gets rid of that lean spot Richard saw with the big 2bbl.

[@jimmywilkinson9190]

Two Bro in the early 80s we built a 6=8 chevy 6 with 2-650 Holleys and headers. I put bigger seats .

[@normansilver905]

I have one on a Chevy 261 6 using a EFI Throttle body. It is a gem. The Clifford products I have purchased are all top quality well designed and built.

[@erenzoscroggins8056]

Great info for the "Straight 6 Mix" crew💪🏾💪🏼💪🏻

[@terrywillis5784]

I had a 1964 C10 with a factory 230 ci. I upgraded with hooker headers and an Offenhauser 4 barrel intake with an adapter and a 500 cfm holley. I upgraded the cam to the equivalent of a big block Chevy 375 horse 396 which was 500 lift and 290 duration. Factory 3 speed and 411 gears. It ran great. I often outran v8 Mustangs and other v8 cars. It would float the valves at 100 mph. Looking back I needed more valve spring. I worked with what I had.

[@Geoduck.]

By far this is one of the more useful dyno videos I've seen for the inline 292. My guess is headers, intake, carb and cam are all needed to make a real improvement. Improving head flow is gonna cost some real money but it would build on what ever is done before. Improving an inline is gonna cost you. Thank you Richard.

[@johncooper9976]

Lol, it did, I have over 7 bills in the head alone.

[@shawnbeck2303]

The Ford 300 6 cylinder. With upgraded head and cam with the Clifford intake 4 barrel and headers. I had a Jasper rebuilt that I wanted to do to my 1981 F 100. But a new house and life got in the way. Maybe a 302 build was what I really needed. Never know. But the Jasper rebuld engine was a good choice. I drove that truck until everything else broke or fell off of it. Donated it for a good cause. In the late 90's. Shawn.

[@patrickholt4140]

Great job Haven’t always liked the inliners but I’ve gained an appreciation for them over the last few years BRING BACK THE INLINES

[@3BRPOWERSPORTS]

fond memories of running a 292 six in my H/Gas '48 Anglia back in the early 60's. The bore was .060 over for 301ci which everyone thought was an eighth over 283. There were no hot rod parts other than cams and valve gear so I made my own intake manifolds ( 2 AFBs) and exhaust headers. It was competitive until some guys* cut three cylinders from two V8 heads and welded them up to provide cross flow breathing. ETs went from the low 11's to the10s overnight and the H/Gas was done for. *As I recall it was Becker & O'Connell with "The Hummer"

[@ranzablevins7593]

I rember Jim headrick ran a 292 in h modified production . He ran 3 2 barrels . They were side by side. Pourman injection . He made his manifolds from header pipes too. They broke a lot of cans. Did you also brake a lot of cams

[@francisdavis1271]

I'll interject a little science into this discussion. The flow in through carburetor or EFI is the entire flow the engine moves at maximum RPM. The flow is called "incompressible" or Bernoulli's (for the researcher who wrote equations in 1725). The valve flow efficiency impacts the number as well as displacement. The 292 cu inch engine at 5000 rpm and am 80% (0.80) would move 378 cfm of air. The cross-sectional areas of each section will govern flow velocity but as flow approaches the intake valve it becomes "compressible" and a different set of equations apply. As general rules any flow should have gentle radii; no abrupt turns. Sharp edged orifices have losses. The goal - though not always possible - is to provide as much cross-section as practical along with plenum volume... making each valve inlet seem to see an apparent infinite volume. You Don't want large turning angles either. Technically the local static pressure of the flowing gas is near the stagnation pressure. A 292 modified with lumped parameter inserts is near to 92% efficiency so rate is 479 cfm at 5500 rpm. Consequently a carburetor of 500 cfm is plenty for this engine... which what the test discovered. Friction loss does exist; turning loss; sharp edged office. As a gas dynamics I like the 12 bolt design but all these Characteristics are incremental. Everything adds a few percentage points.

[@ronb113]

I love seeing projects like this. Trying to make gains with oddball engine and such, very cool!

[@LT1HILLINGHOE]

Nothing oddball about a 292.

[@wesleycollins9547]

I would like to see a ford 300i 6

[@CraftsmanQuad19]

It’s coming

[@DeanMk1]

@@CraftsmanQuad19 How about a 292 vs. 300 shootout? -b

[@CraftsmanQuad19]

DeanMk1 thats most likely coming too because of their similar displacement

[@DeanMk1]

@@CraftsmanQuad19 You're the man! I'll keep an eye out for it. =)

[@jumpsuite]

hey slant six do it

[@kylemilligan752]

Can't wait for the efi ford 300 series of tests😁😁 The largest group of straight six enthusiasts would have to be the jeep 6 guys tho. A 4.0 amc/jeep build would be fantastic. We ran a stock, rebuilt 4.0 cherokee 2wd automatic on our dynojet. Rated at 170hp flywheel, it made 145 dynojet wheel hp. Kind of impressive. Looking at the 4.0 cylinder head ports vs the efi ford 300, and the chevy 250/292 head tells the whole story.

[@HootOwl513]

I run a 292 L6 in my '68 C/10 Stepside. I have Clifford headers, Offy intake, an Edelbrock 1404, 500 CFM 4 Bbl carb, HEI, I.84 Intakes, 1.6 Exhaust, .Badger cast pistons @ 030-over, Crane 260H Cam, SM465 4-Speed, and a 3.73:1 Corp 12-Bolt rear. Current engine got on the road in 2005. It is the original block, that I boxed up after going over 100,000 miles, in 1977, when I built another 292, also @ .030-over, but all Heavy Duty components from the Yuma GM dealer. Stock cam. TRW forged pistons, I ran the same Clifford headers and Offenhauser 5417 intake, but with a 390 CFM Holley 4160 R8007 4 Bbl, and points. Got 250,000 miles out of that block over 25 years.

[@bladenrexroth2555]

These engines are capable of 375hp/510tq on boost. On stock block, stock crank, stock rods. Can do well over that if you want to throw half of your wallet at it. Engine, machine work, cam, intake, carb, lifters, push rod, piston, distributor upgrades with a Ebay turbo/intercooler kit will be under $4500 and should net at least 350hp.

[@barryobler9491]

Would be cool to have been able to get an aluminum Sissell cylinder head and better cam for that thing!

[@rhostatton8944]

...does Sissell still make Chevy inline 6 heads??

[@barryobler9491]

@@rhostatton8944 I am not 100% sure, I can check with Mike and see if he has any left.

[@thisisyourcaptainspeaking2259]

Always a pleasure to see the shenanigans Richard concocts, thanks Richard! ;) I know there are 292 fans out there, pretty sure they still race them....

[@saludahead]

A buddy of mine found a head off of a Blue Flame years ago and modified it to fit a 292 many years ago when such things were easy to find in the junk yard and weren't worth their weight in gold! We put it in a a 65 C10 it did real good!

[@michaelbenardo5695]

Wow! I always wondered how hard it would be to do that!

[@Tanner731]

I love Clifford. I really want to see you do a jeep 258 with their parts

[@akaitv6606]

We have a similar engine in Australia however only 202 cu in 3.625 bore 3.250 stroke Mine made 225hp@6200 Cam 238@.050 495 lift 110lsa 10.5 :1 comp Triple SU carbies Ran 14.8 sec 1/4 with 3.08 rear end ratio Trimatic auto 2800 stall

[@buckykattguitar]

Is that the Holden Red?

[@ryanmalin]

I told a couple mechanic friends about you and everyone who sees your stuff is impressed. You're the man Rich!

[@richardholdener1727]

thnx

[@seanfagan6998]

The ford inline 6 4.9 needs to be in your hands on the dyno

[@MsKatjie]

Lot's of hard work, so full marks. Can't say the big 6 does much for me but if one has one, that then becomes a whole different ball game. Good cheer, to all engine fixers out there!

[@randybaca6132]

I got a 1927 Ford I put a a Clifford intake with a 450 carburetor and headers it runs really fine I've never had it done it's got a 350 turbo automatic anyway I love it runs great thanks for all the info

[@Darkhorse393]

If gorrilla tape works as a gasket then I'm about to save a pile of cash

[@anthonymason701]

Anything can work as a gasket... but for how long?

[@MrTheHillfolk]

@@anthonymason701 a few coats of touch up paint is fun to brush all over a torn gasket instead of scraping it off and making another if the gasket is still there.

[@Tanner731]

someone used red rtv to hold my friends cracked jeep 232 exhaust manifold together for a short period of time! when we got it after it had been sitting for 10+ years it was leaking pretty bad when we took it off to put a header on because we thought itd be a good mod for some more torque the manifold cracked into 3 pieces, made my friend real glad i told him to buy a header for it LOL

[@Val_Killmore]

1 simple trick... Fel-pro hates him

[@bentboybbz]

I keep a roll of gasket material around for emergencies. It cost me like 11 bux at autozone. Get one you will thank me.

[@mangomcpoo475]

I'm watching this for hints on what to do with my old man's XY with a 250ci here in Australia!!

[@MJTAUTOMOTIVE]

Thanks Richard, another Awesome video. A 12 percent increase from an easy bolt on upgrade is always a win. At a low starting point of 145 12 percent is something that you would definitely feel driving this on the road. It was also great that David Frieburger gave you and your KZbin channel a shout out on the latest episode of Engine Masters. Can't wait for the cylinder head and cam upgrades. Cheers. 👍

[@richardholdener1727]

he is good people

[@The_R-n-I_Guy]

I would've loved to have an extra 20 horsepower when I had my 250 straight 6 Camaro. For a rusty 6 cylinder 78 Camaro it was still a lot of fun

[@richb.4374]

Seeing an inline 6 modified reminds me of my youth. When I was a kid I used to go to our local stock car races with my friend and his dad and back then they had a six cylinder class. The inlines made good power and were almost as fast as the V8 powered late models that ran there. Their lap times were only about a second slower and the class was much more affordable for the garage builders who ran there. I miss those days. A guy could build and race a stock car for a couple grand back then. Now most of those small tracks are gone and the ones that exist run $$$$$ cars where you need to win the lotto just to compete.

[@LT1HILLINGHOE]

But yours had an integrated head. You couldn't change anything unless you did a head swap to the old style head.

[@motherlovinsnuffstar]

I’m running a Clifford intake, 500cfm 4bbl eddie, and headman long tube headers on my ‘80 cj5’s 258 I6. Idk what it’s making but it has no problem turning over 33 inch tires. You are the man Rich!!!

[@jeeptk]

Great to see other than V8s all the time. Maybe an old Iron Duke 4 banger sometime?

[@itsjustasix]

Richard, great work!!! Keep it going !! With a turbo, cam cylinder head modded, ported, 1.84" intake 1.6" exhaust, intake lump port bolt in, (helps the short turn radius), should make 500 ft lbs with enough boost pressure about 20-25 PSI. Crank can take it, rods are a bit weak (they are forged) to rev high, 4.120" stroke, main cap for every rod, strong enough. I believe a better damper is needed to rev higher. Harmonics really wreak havoc on these 6 cylinders. Too much torsional vibrations takes away a lot of HP, need to keep that in check. It is a lower reving engine as compared to a 194,230, 250 CI engine. Can't wait for more videos!

[@WillC299]

I find this more interesting and entertaining than the big horsepower dyno videos. This is something the average guy would be doing out front under the tree.

[@chrisobrien9334]

This motor your doing is the bigger brother of our(Australian) Holden 6. Our 202 has been developed so much over the years that now some are doing 450na and 600+ boosted. Love ya work.

[@watsisbuttndo829]

Bring the tales of woe richard. So much ying without any yang and the whole cosmos will go out of balance!

[@scottbennett3119]

You make great videos! Good sense of humor, too!

[@weels1886]

I had a 292 a while back. That thing could pull anything. Lotsa torque!

[@GlennEverittMasterofMachines]

Loving this project, and in a way, this engine is the big daddy to our popular GM Holden six we ran here in Aus for many years. I'd love to see a project like this from you based on the Slant Six some day, another awesome and unique engine of the period.

[@scoutdogfsr]

Sure do respect the Aussies for their love of vehicles. I think American and Australia are nearly equal in that way. One exception is the Aussies road race the hell out of the old muscle cars!

[@johncooper9976]

You Australians and Brazilians do some incredible things with the inline 6s. I would sub to any build videos you guy would do. I would pay to watch those.

[@cw5880]

Who has the shortest intake? The Aussie Speed will run 2in into the side of my doghouse the PES intake does the same. Do you think the Offenhauser is shortest? San Diego

[@josephcottone9613]

Awesome vid!! Still hoping for a slant six series! NA, turbo, torquestorm, Weiand 144!

[@DeanMk1]

I'd like to see someone cast blocks for that engine that allow for a 273 V8 piston to be used. That would up displacement to 255 cu.in.

[@josephcottone9613]

DeanMk1 that would be cool. An aftermarket aluminum head would go a long way too. There’s a talented machinist working on one. Hopefully he will go into production someday.

[@johncooper9976]

Have you checked out Uncle Tommy's Garage on KZbin? He does a lot of Mopar and slant 6 stuff and go into deep detail. Very interesting

[@toddlentz5408]

Thanks for all of the Other Guys series. I’ve seen I6 engines pull dragsters into the 10s, so I’m looking forward to watching the progress

[@patriotrob7066]

I love stovebolt 6 cylinders I had a 58 235 inline in my 50 chevy business coupe. It was 30 over mcgurk pistons a Barry's cam Clifford true headers with a Clifford 4 barrel intake and a billet adapter I made for a weiand 144 supercharger electronic ignition and a 750 holly. It made over 300 hp and was a smash hit at car shows.. 6=8 .

[@johnnyk5]

Would be sweet if you could get ahold of the head/EFI system from the 4.1L/250 inline six in the Brazilian Chevy Omega and try it on the 292.

[@deanstevenson6527]

johnny K : You and John Woodworth should get together. Nice post, btw. Im MorocoMole..

[@supercuda1950]

Don't forget chrome or cast aluminum adds valvetrain rigidity) valve covers for added hp!

[@Weldangrind]

That was a lot of fun! I’d like to see a carb installed that the Clifford was designed for, along with an HEI that you tailor the springs to match. I suspect there’s power hiding in the ignition that wants to be released.

[@richardholdener1727]

agreed

[@richardharris492]

Amen, life is about how well you deal with problems/ setbacks. Congrats on the results, keep em coming

[@thejavelin7832]

Small 4v for me. Cruise on the small primaries for economy. I run a 500 Carter AFB on my AMC 232, with Lunati cam, Offy intake, HEI and later exhaust manifold, and I get 21mpg. With my driving habits, lol. I'm not kind to it. Keep up the i6 content!!

[@MultiScotty12345]

Great video Richard thanks, I love the little underdog 292!

[@LD9user]

Why do I love this 292 stuff so much???

[@steverepko5499]

Great videos. Thanks Richard

[@mmgtl]

Dang it you're making me want to pull my 250 6cyl out of the back of the shop and start hopping it up😁

[@walliehart5975]

Chevy straight 6 , I'd go for the 230 cu . Same pistion with short stroke . More potential for rpm and hsprs . Reduce 4 brrl with Holly restricted plate add a 600 cfm 2 brrl Holly carb . Add a long tube header . That's how the dirt trackers did it .

[@nquinutolo1970]

Thanks for the video! I saw a video where an engine builder put a 292 crank in a 230” pontiac inline 6 sprint OHV motor made from 1966-1969. With UPDATED CAM,…VALVE SPRINGS,…headers WITH triple weber dueces made 370HP! THE PONTIAC L6 OHV WAS ABLE TO REV OVER 7000 rpm,… the Pontiac design had the cam lobes riding right on top of the valve spring,…made valve train extremely durable and hi-RPM monster.

[@bcbloc02]

Definitely needs cams and boost!! We need 292hp from this thing!!

[@cliffweatherbee6914]

Wait a Minute! I don't remember designing any intake manifolds!!!

[@extremebudgetgarage3216]

Rich please do the straight 6 from the trailblazer and make it famous so we can have more aftermarket support. Me and my two atlas 6’s need u rn 😂.

[@johnnymack8442]

I still believe that the triple 1 bbl intake is the best on the 292 as it's better in fuel distribution

[@jerryhudson1066]

One more test might be the good manifold with the original one barrel. I have a modified 250 that out ran a 400 firebird when it was in a 67 chevelle. Has domed pistons, 202 valves, but still had original one barrel and manifolds. Bigger carburetors may be the biggest mistake in hopping up motors. I remember a 56 Pontiac v-8 with a one barrel that ran about 120 mph.

[@dylanboyle2995]

I would love to see you do these same tests on the ford 300 just to see differences between the two makes there almost similar displacement same non crossflow heads you can run an older 300 with the carb or use an efi head with an offenhuaser c series 4bbrl intake. The efi head also has heart shaped combustion chambers with dual exhaust manifolds you could run twin turbos on the new head pretty easy

[@2HacksGarage]

Ah… great video! I just wish alot of these in-line 6 engines had a cross flow head

[@saludahead]

Get a stock four barrel off a 289 Ford! It works really good on those old 6 bangers! You'll have to do some tricks to get the passing gear to work', but you're hot rodders, You'll figure it out!

[@EBthere]

I'm a year late but I loved this video!

[@johnsarab4500]

What I care about is the fuel consumption of the various intakes/carbs. An engine can only use so much fuel mixture.

[@linkloudenback8359]

I think the Offeinhouser four barrel intake might be better suited because it’s designed to use the conventional carburetor.

[@christopherdwayne1110]

Thanks another great video Dwayne nz.

[@deanstevenson6527]

Christopher Dwayne : Dwayne and Dean. Two Kiwis watching everything You Doo with your 2-9-2.! Chur!

[@scoutdogfsr]

Love watching the Other Guys. LS is a mean motor and a small block ford or chevy have nearly unlimited potential, but one is ugly at best and the other two are so played out. Keep up with the uncommon engines pls. Would love to see an odd fire buick/Kaiser 225 v6 hit the dyno someday. Or maybe an AMC 401 if you could find one.

[@lloydholt6511]

Great test. Be interested to see what a 0.650-0.670 lift cam would do for this engine with a 10.0:1 compression ratio and reworked head with larger valves and springs. Dreaming of a test with a Sissel twelve port head. I know, it’s a really high dollar head but the results would be interesting.

[@jepito29]

Learned on my flathead. A big(500cfm) 2 barrel is awful because the signal strength is weak at part throttle/ low rpm. A small (390 cfm) vacuum secondary 4 barrel drives WAY better and makes as much power.

[@deanstevenson6527]

jepito29 : Thats it. Well said!

[@chackos123]

How about a Ford 300 straight six, or a 4200 Vortec I6 or a 3500 Vortec I5, or 4.0L I6 Jeep. I love inline engines and the Inline 5's sound amazing but aren't very common. Not a huge GM fan, but I'd love to see the and HEAR an I5 Vortec from the Colorado/H3 Hummer getting put through it's paces. Keep up the good work! Love your videos .........especially "the other guys" projects.

[@timothyryan2847]

You have WAY TOO MUCH fun at your job.

[@hu3.789]

@Richard Holdener - With a cam and good flowing heads, the 292 Chevy with a good intake can make around 220 horsepower and 350 foot pounds of torque. The initial throttle response would make a truck with this engine fun to drive The limiting factor with boost will be how much torque can it make before the cast internals break. I don't think this engine could make more than 500 foot pounds of torque without breaking connecting rods. When you do the upgrade to the heads and cam, perhaps you can ask your subscribers what the final number will be with a turbo that you can show in a later video.

[@ricjona1069]

They 510 TQ on another channel. Stock short block with hypereutectic pistons. The stock connecting rods on the 292 are pretty stout. 7 mains for the crank.

[@hu3.789]

@@ricjona1069 Thanks for the info

[@ricjona1069]

@@hu3.789 I rewatched to get the exact numbers. 510 TQ, 372 HP @10.5 lbs of boost. All under 5K RPMs. You'll see Tom Lowe (12bolt.com) mention throughout this build. He did a 320 HP NA GM inline 6 250.

[@dielauwen]

The Mercruiser engines of the 60's had a 2 barrel and a cam with wet manifolds and made 175hp as I remember but it was long ago. The big problem is the head. It needs big mods or replacement. TheMarine engines were rated at wide open throttle at full load and lasted a good long life. The bottom end is strong.

292 dyno series are lovely!!!!

[@gorkzop]

Plusn the fact it's 20hp gain all over the curve..not just in the top. I'm more fan of a 4-500cfm 4bbl on these.. secondaries only open when needed to keep the velocity up and metering stable.. big 2bbl flows way more as the primary of a 4bbl!

[@wymple09]

I'm putting a small 4 BBL on my 250 that came from a 4100 Cadillac engine. I think it will be perfect to get a good combo of power AND mileage. I've also got long tube headers and a lump port kit. I shall see.

[@jonwaterbury3312]

You're the best, Richard! Thanks for these very informative videos.

[@nquinutolo1970]

Its a shame they dont make an aftermarket aluminum head for these engines,… they have the lump ports mods you can do and increase flow quite a bit though. The Pontiac OHV L6 had dedicated tube runner for the intake unlike Chevy and the Sprinter option used. 2 piece header where the exhaust colector merged together for increased exhaust flow velocity.

[@justinwright6611]

Can’t wait for the next instalment!!

[@andrebcr]

Greetings from Brazil Richard. I have a 292 in my cara here with multipoint fuel injection , high compression ratio and another things. I didn't tested It at dyno but the result for me is very Nice. If tou want i Can send you the link to check. Is rising rpm Very quick

[@brucefrye8799]

I had a 1960 panel truck with the 262 it was a bullet proof

[@oletom6970]

Commented on the 1st video As a man who only had 292 Chevy the 1st 8or10 years of my driving career that isn't a. 292

[@chrisobrien9334]

The KZbin site is Billet block Torana Holden 6. It’s a Pink Torana on the dyno doing 400rwhp. Mighty strong sounding motor

[@beargibson3100]

Maximum CFM of any 4 cycle engine can be calculated as follows. Engine Ci × rpm ÷ 3456 = A. A × VE ( volumetric efiency) = CFM 292 × 5500 = 1,606,000 1,606,000 ÷ 3456 = 464.699 464.699 × .85 = 394.994 CFM. This is assuming this engine could achieve 85% volumetric efiency.

[@scotthatch4653]

Problem is that is the mechanical CFM draw of the motor and carburetors and heads are tested with a pressure drop so not the same thing ... People assume that cfm is a given amount and it's not ...you need the pressure drop to know what it flows

[@frankieford7668]

Good Job Richard...👍 i enjoy waching the Other Guys tests...Ive done Similar test with the 4.0 Liter Jeep ...I made close to 200hp...to the point where i started breaking everything in the Drivetrain...Trans...Drive Shaft...Diff...even broke the Axles...lol. Straight Sixes make good Power and Excellent Torque...🇺🇸

[@justinwright6611]

Also I think we need merchandise once you hit 100k subscribers!

[@scottsigmon926]

I think the cam swap is going to be a HUGE gain!!!!