408 STROKER FORD TURBO BUILD & DYNO. TURBO ON TURBO ACTION. HOW MUCH POWER DOES A TURBO 408 MAKE?

[@davidresar8256]

Richard, you are correct! The smaller turbo only had capacity for down low. The bigger turbo has capacity for the whole range. Therefore, your testing clearly shows the smaller turbo is running out of airflow. Great video! Now, where was that 88mm???

[@scotttimpany2845]

Needs at least an 88! Daytrade Scottie says, "408/88 is great!"

[@brianmaynard7320]

Thank you for this!! Love the small block Ford!!

[@stuartdrager4954]

The 351 Windsor and Cleveland thirsty engines, good cylinder heads on them and nice valves, ,and, with the solid camshaft and lifters give the small block Windsor a big dose of medicine, there tough as nails it would handle the punishment, they can make big power when tweaking and the settings are done, 3000hp if built right

[@tomhamilton9140]

Thank you SB Ford stuff keep it coming.

[@2010HarleyDynaFXD]

We are doing a similar project for our 70's Econoline tow van but our compression ratio is 8.5:1 instead of 9.5:1 for more boost and its 410 CI SBF "2 CI is not much different" thanks Richard for this test I just need a lot of torque for towing 😂

[@brawler3475.0]

Just built a 351w with a vs7875 and i love it in a fox body mustang has awesome power.. i built this motor around your videos 👍👍

[@richardholdener1727]

Nice work!

[@live2ridegsxr1000]

What's a build like this cost? I've had two 351w rebuilt for my broncos, but didn't go stroker or boost.

[@fgialcgorge7392]

Pretty crazy. I just started a 351 build for my AWD crownhick project. I've been wondering about turbo vs NA. I actually settled on a slightly smaller turbo because I need that low rpm power and particularly torque. I live up in the mountains with steep hills and winding roads all the way home from work, about an hour of it. We also get a lot of snow so I had to go AWD, plus AWD is just fun. Great video.

[@I_like_turtles_67]

You got Instagram? I want to see this lol.

[@gregoryjones52]

Did you degree the cam?

[@bri-manhunter2654]

Why not add a smaller cam with lots of advance to make strong bottom end and midrange torque. You can also go with a much bigger turbo to handle the overall power. This would make more sense to do.

[@kellypilant9176]

CrownHick....😂😂😂😂. Thanks for the laugh friend.

[@Jerry-up8bk]

CROWNHICK ! IS thar supposed to Sound COOL or SOMETHING?

[@DillonAuto]

I apologize for the tangent, but I used a Comp Turbo sourced upgrade for my Supra. I was pleased. Now, on to your video.

[@luketilley9137]

Awesome. JMS buit a 30 over factory stroke 351w with 2 of the smallest turbos Precision Turbo makes and that combination made a little over 1,100hp

[@johnb7430]

Love seeing the Ford stroker info. Ring gap! We know boost needs more to deal with the heat. But i don't recall seeing the NA power vs ring gap as a dyno test.

[@richardholdener1727]

motor was built with ring gap

[@johnb7430]

@richardholdener1727 yes, i saw. My question is if a new motor has 0.018 ring gap, then you increase it to 0.025or 0.030 or 0.040 to survive boost.... how does that affect NA hp?

[@richardholdener1727]

it did nothing to power on my 5.3l motor going from .020 to .032+

[@optimumperformance6998]

Apparently ring gap did not hurt NA power production. That is a stout engine that would happily live on crappy fuel. Curious with flat tops if it would have closed in on 700+ NA.

[@KingJT80]

@@optimumperformance6998 naw he wouldnt gain that much with a compression change. the whole top end would have to change for higher RPMs. MAYBE 600

[@shane-222]

Great video! The turbine couldn’t keep up. Try adding a second!. 🎉😉

[@takeit2-11]

McLovin it! That turbo bonnet/box is pretty cool. turbo magnum! turbo magnum! turbo magnum!

[@GreenCrim]

If we think of the intake manifold as a pressure vessel the turbo is filling up to a certain pressure, and the engine as a leak that gets bigger as RPM increases, if the turbo is too small eventually it can't keep up with the 'leak' so the manifold pressure starts to fall. Put a bigger compressor feeding the manifold and problem solved.

[@patrickmarcello5103]

Thank you for posting more 351 Windsor content! We need a big bang revisited! Maybe this motor can be pushed? 🤔😂

[@KingJT80]

theres guys in the mid 8s with these in mustangs

[@timweb1510]

I thought I was foolish running a 70mm on my 351w but my tubular intake, trickflow stage 1 cam can’t take advantage of the rpms anyway

[@nickma71]

Comp Turbo made my T04E for my Supra that bolts the factory manifold. A replacement for the long defunct HKS Sport Turbo Upgrade. Sorry about the tangent. Comp makes a nice product.

[@richardholdener1727]

glad it worked for you

[@dannytravis7118]

Cool test thank you. But now it's time to see if I learned anything. Personally I would like to build an identical version of this engine with a few minor changes. I would do the same stroker crank and afr heads but with a hydraulic roller instead of the solid roller and smaller with wider lsa to make it more street friendly. I think twin gt45 or gt 35 turbos would be great. On the induction I like the 850 in the blow through box is great but I would like long runner fuel injection, or if it stays with the carburetor a rpm air gap with a 2 inch spacer. I dream about building an engine like this for a 68 to 72 torino or 75 to 80 mustang 3 door hatchback. When I was 19 I had a 78 mustang and a mild 351 Windsor and it was awesome. I had a lot of fun with it. But I didn't know then how to do body work and the c 6 transmission wouldn't fit in the transmission tunnel. So I reused the c4 transmission that came with the car behind the 302 and it lasted about 6 months before I blew 2nd gear. A fmx transmission and another c4 later I ended up selling the engine and parting out the car after my appendix ruptured and I need money for rent and electric.

[@KingJT80]

i would stick with the victor jr on a 408 stroker like this unless youre building a real low rpm turbo pickup. an air gap is way too small for a afr 205. if thats the case put afr 185s on it and an air gap you see this combo makes power up to 6k and thats a single plane and a mild solid roller

[@richardtyler8922]

Richard, please do a stroker with Kaase C-400 CHI heads.

[@genemounceSr]

Rebuilt 351W with a billet wheel VSracing gen 2.5 7875 combo suddenly sounds AAAAAWsome ! lol Cool vid R.H. ! 😎👍

[@RyTrapp0]

Ayy Richard, are we going to see some Coyote intake testing in the future? There's a LOT of options on the market all of the sudden especially with Holley dropping a Hi-Ram & Ultra Lo-Ram now, and the Coyote is as popular as ever too. (my inner Ford Modular fanboy weeps - NEVER had intake options like this, even the Godzilla already has more intake options I think LOL)

[@Lagrange1186]

Nyet is fine size turbocharger! Only lonely 🤷🏻‍♂️ add one more 😃

[@mike4fo]

Love the ford stuff

[@matthewdeluca9248]

Do you remember how many cc those pistons were dished? I am putting together a 408w with AFR heads but with the smaller combustion chambers, I believe they are 58cc.

[@russelljackson7034]

Right on

[@DillonAuto]

I don't think people should always say that boost "falls off". This engine is running very well at 6000 RPM, and consuming a lot of air every time the valves open. Much more than at 3500 RPM. So more of that positive pressure in the manifold is going into the engine, lowering the restriction, which is the intake valve when it is closed. And as he said, the bigger turbo moves a lot more air, and can over fill that manifold more than the smaller one, making more "boost" which is positive pressure in the manifold.

[@JDWard-Jeepster]

What is the advantage of stroking a 351w to 408 vs. Just building a Ford 400 .030 over. The stock 400 crank while cast is pretty stout and the 400 stock rods are some of the best Stock Ford rods made. Just upgrade them to ARP rod bolts.

[@richardholdener1727]

the lack of parts avail for a tall deck 400

[@josephmoneymobley]

Afternoon sir

[@jeremiahfiek5495]

I have a 408w with AFR185 heads going into a lifted f350 4x4 with 35" tires. Do you think (1) 76mm turbo would be appropriatly sized for that engine in that application? It'll be used for daily driving, towing, off road, working, etc. I probably wont run real high boost maybe 7-12psi max. Thanks in advance. My turbo knowledge is very limited at this point and is why im asking.

[@richardholdener1727]

The difference between 7 and 12 psi would be 150-200 hp depending on the original NA power output, so that change in boost is a lot. An S475 would be good or VS Racing 7875 Gen 2 or 3

[@jeremiahfiek5495]

@@richardholdener1727 the engine isnt built yet so i dont have a horsepower number yet. I have a 76mm turbo already. Its not a super good one and its not a cheap chinese one. As far as the PSI goes i havent figured out what would be ideal yet. Thanks for the reply!

[@dannykichar9066]

Richard how come a cam that big peaked at only 6100 rpm naturally aspirated

[@johnb7430]

I was wondering that too!

[@Comet-hn3gm]

Boost. It always comes on earlier with a power adder.

[@KingJT80]

its a 408 remember a 248 duration cam as a solid is like 8-10 degrees smaller than it hydraulic counterpart in other words, this aint a big cam for that many cubic inches.

[@Comet-hn3gm]

@@KingJT80 And boost makes the engine think it's bigger than it is. So again, it will peek earlier.

[@jameshenson4871]

Solid roller the best. Run one on the street. Zero issues!!

[@KingJT80]

they just dont like to idle really low. i think thats where people screw up at. ive seen plenty on the street

[@jameshenson4871]

@@KingJT80 mine idles around 925 rpm.

[@sarahhill9395]

@@jameshenson4871, I also run a solid-lift cam on the street, no problem here, although it is a mechanical flat-tappet

[@jameshenson4871]

@sarahhill9395 Wow, that is a bit more extreme than me. A flat tappet solid for the street! I really love the way any solid sounds. They have a different sound than a hydraulic.

[@jplperformance9073]

Very cool video

[@ronniejohnson317]

I’m going to ask a stupid question and I know it will sound stupid. What results would I get from a cam with a 262 duration and maybe a 108 lobe center, a Fast as cast heads , and a couple small turbos? This is what I am leaning towards for my old mud truck.

[@richardholdener1727]

262 @ .050 OR 262 advertised duration? What size motor, what size heads and what is the desired power level?

[@ronniejohnson317]

262@ 50 on a 351w. Might even stroke it out 387. Maybe a Flo Tek 203505. I want a low to mid range torque. Probably won’t get to 5000 rpm much.

[@MrPhukyew]

Well explained!

[@daverr8163]

I think an electronic boost controller would have leveled the boost curve on both turbos. There would be no mountain peaks in the boost curve

[@richardholdener1727]

not if the 74mm turbo is to small

[@kevinmarchini5272]

Its irrelevant if the turbo is to small

[@zAvAvAz]

very good!

[@scotttimpany2845]

Seems like it shoulda made more power with that cam. Tis a healthy bumpstick

[@richardholdener1727]

agreed

[@Die_Dylan]

Great video, do you have any dyno results for different twin turbo setups? I'm busy building a 383 ls1 stroker that's going to see boost but I'm not set on if I want to go for twin turbo or single, my goal is a good street power range.

[@richardholdener1727]

the success of that has nothing to do with single or twin-just size it or them correctly

[@trol2514]

Which fuel is used on this test?

[@richardholdener1727]

RACE

[@brandonkanthack]

Thanks for the information! I'm curious, do you have any tests on a stroker Clevor? Same bottom end you have on this video, but with the clevor heads?

[@richardholdener1727]

I have run Clevor strokers-not this exact bottom end

[@brandonkanthack]

@@richardholdener1727 Have you posted videos on them before? I don't see any but you've done quite a bit of uploading! A link would be appreciated if you have.

[@richardholdener1727]

don't think I have the stroker up-but do have the CHI-headed Boss up

[@brandonrobertson6327]

​@@richardholdener1727Curious about those Cleveland heads if they would out flow the AFR's. Wondering if tut he canted heads flow better than the wedge heads due shrouding issues?

[@Go4BrokeOffroad]

Sbf ftw. 🤘

[@AndyFromm]

Nice

[@59vaughn]

Damn...!!...900+ ftlbs ain't a good street motor..!?!...y'all are just nutty...two smalls would be the deal..!!...and pull from 2k to show all the torx...dang...

[@beedub0218]

Have you done a high compression, say 11:1, low boost combo???

[@richardholdener1727]

yes-factory LS3 is near that

[@jrorie72]

Run this test with a 335 series!

[@KingJT80]

did he do a turbo 460? i thought he did..oh wait thats a 385 series...whats 335 series?

[@brandonrobertson6327]

​@@KingJT80351C, and the other two variants 351M & 400.

[@KingJT80]

@@brandonrobertson6327 I thought he did one but maybe not

[@brandonrobertson6327]

@@KingJT80 Not sure. But in would like to see the 351C, 400, and a 351W w/ Cleveland heads. The 400 after March of 1977 was a strong block due earlier castings having issues above the lifter bores per Wikipedia research. The horsepower was lacking due to smog restrictions, but you can stroke one out to about 440cu in. And with the 351C cam being interchangeable, high performance would not be a problem. That would be a torque monster if you had some improved aftermarket aluminum heads and a turbo.

[@KingJT80]

@@brandonrobertson6327 I looked into his videos and he did do a supercharged Cleveland

[@doingitwronggarage9651]

Do you claim that a 80 mm turbo is a good choise for an engine that produces 550 hp NA? I belive one need a turbo that can deliver 110 lb/min. airflow at 2.0 PR. and within 70% eff. range in the compressor map. Never seen a single 80 mm turbo that is able to do that, but maybe you have?

[@richardholdener1727]

You can calculate theoretical flow all you want or just look at the actual data. The turbo does not need to be in the island of max efficiency -it just needs to flow enough to support the power

[@Gregoman89]

Ford go boom?

[@gregoryjones52]

Did you degree the cam?

[@richardholdener1727]

no

[@strokermaverick]

What year, was this dyno session?

[@richardholdener1727]

in a Galaxy far, far away

[@strokermaverick]

@@richardholdener1727 Nice.

[@J0eBl0e]

NA that motor is stout already. 1.35 lb/ft per cu in at 9.5:1 CR is remarkable.

[@TheProchargedmopar]

👍💪

[@hollowell427]

Whats better than one 74? twin 74's FTW LOL😂

[@mohsenkhatiblou311]

You forgot to say that if hot size was the same or not.

[@richardholdener1727]

it was not

[@TorySanders-x6f]

Talk about timing the point of putting something on a Dino is to check timing

[@richardholdener1727]

the point of putting something on the dyno is to check timing?

[@a1dieselmechanic921]

Fuq yea

[@fusion82]

1

[@bonose12]

Nice 408...yikes!!

[@mikeclark740]

Sweat 😅

[@chrismathes3647]

408W 🎉🍻😊

[@ricknichol260]

It's a ford who cares

[@ronniejohnson317]

At newest, it’s a 35 year old engine. I had a 406 Chevy with Brodie heads a a solid roller and didn’t make 550 hp.

[@KingJT80]

@@ronniejohnson317 depends on which brodies you had but yeah that makes sense you didnt make 550HP. youd have to have the brodie dragon slayers on a 400+ small block to make 550-600HP

[@stevegeorge5702]

Dicknichol wants more white claw……. Ls ?

[@rebekahfrench5747]

chev, ford, dodge it is choice and they all burn fuel.. in my world i run a Cleveland and to this day feel they sound better than everything else out there..😂😂👍

[@dnunley423]

@@rebekahfrench5747ya ever heard a coyote haha