Speed Secrets Getting 500 Horsepower Out of a Small Block Ford
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- Опубликовано: 6 авг 2024
- Getting 500-horsepower out of a Small Block Ford is not as simple as it might seem. In this episode of Speed Secrets, Richard Holdener explains the exact formula to get your SBF to reach these numbers.
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Great video and info. I wanna thank you for the 460 budget stuff. Would like to see a little more engines running footage. If not its cool thanks for all your research.
Thanks for posting. Going to do a 347 build soon enough
your better off going the 331 the 347 is a time bomb to much stroke for that combo
Would be great to see more detail, say, the cam thrust bearing assembly and the installation instructions, I've been told that cam walk sounds like piston slap, or mild rod knocks. I have a 289 that sounds more like a diesel at idle, good oil pressure, bearings clean and smooth on inspection. Verbal diagnosis was cam walk...
Hey Richard I watch your videos and I know you were very knowledgeable with engines.I just purchased a forged Scat 347 rotating assembly for my 5.0 pushrod that is turboed with a 76 mm Turbonetics and Holley Terminator X with 1050x injector Dynamics injectors.The one thing that's kind of holding me back right now is my cylinder heads which are gt40p eventually I will change them to better flowing heads but for right now money is tight. My question for you is what type of Cam should I run in this setup? I am stuck on what type of lift I should go with. it is my weekend driver on the street and once in awhile go to the track. In your video you showed running the xfi 236 HR - 14 cam would that work well with a turbo
Richard, can you please do a test with this motor with some Dart 195 as cast Pro-1's on there with an rpm airgap and a 670 quickfuel or 750 holley
how reliable and long lasting do you think the iron blocks are? I see varying figures can it handle this or do you have to just not go WOT a lot. I am building an NA 306 that should be over 350 hp but I then found a bargain rebuilt centrifigul... I'd want to swap my rods and pistons maybe even though only running 6 psi... but I'm nervous to even go to 450 with the stock block... It's a YYY block that came out and I had ordered a machined XXX from an 88 Tbird says the stamping and i noticed the casting is definitely THICKER than the YYY that came out of the truck even though no one seems to know those designations.. . because they both have the optional roller hold down spider threads.. so Anyway.
Good stuff. Lets say a guy has a 351W and is thinking 408 Stroker and roller lifters. 500hp or even more?
Use the Cleveland, still a small block. Should be relatively easy, especially with aluminum heads
Ever experimented with the xfi248 cam? Wonder what that would have done in this 347
How often do you calibrate your Dyno🤔
How much compression are you running in this motor?
What could this setup make with a 408 cubes!?
Great video Richard. If you were running a carb on that combo, what CFM would you choose?
Prob a 750 cfm, I'm building a 306 with Holley High Rise intake efi. Hopefully im in the 500 ish range or close to it
Fords prefer slightly smaller carbs. 1 650ish carb is all you need in a SBF. Except 350 cu + small blocks. If I wanted a 500 horse Ford, it would be either a high winding 289 or destroke a 390 to 331 like Glidden. The 331 likes two 750cfm if you can get it to rev passed 7k.
Lets see a dyno pull for a 331 with the best heads and cam combo and higher compression.
How much did all that cost?
Yes it’s extremely possible, to even get way more than just 500.
Put all that into a 408 Windsor, I want to see THOSE numbers!!
my left ear really liked the video
The less displacement you buy, the more RPMs you need, and that cam comes in handy. Otherwise, I will respectfully argue...a head that flows well, moves the air of a rowdy cam, without its poor idle and vacuum. But that head also needs a great combustion chamber design, which a cam has no influence over whatsoever, to deliver even more power.
So, sorry commercial, but the head choice is the real factor.
Feel free to watch Rich’s other vids
The easier you can make that vacuum pump work the better it does
Come now its no secret, to Throw enough money at some thing, it will perform .
Start with a stock smaller displacement throw a comp cam what do you get. This motor has forged pistons, ($) arp engine bolts ($$, ) stroked( $$$), this is no "SECRET" ,everybody knows it takes money, to go fast.
then it MIGHT be 400 if you had AFr 165s and a .550 lift + cam and at least 10:1 on a 302
won't be 500hp though not even close. it would be better if it was an AFR 185 heads on a 302 and .600 lift hydro roller cam with not a lot of duration that might be 440+
They only substitute for cubic inches is cubic money.
Let's see, Honda built a NA engine for the S2000 that with two liters displacement put out 247HP or 124HP per liter. That's over two hp per cubic inch. In a production car.
@@mpetersen6 which would be great in a world without gravity or friction lol.... but even David Vizard will tell you the prowess of an Engine is based on it's Torque value per cubic inch. Not that this is what you're doing but I always hated when people acted as if the japanese or germans are some mechanical wizards next to American engineers... They're not... it's just different purpose. American engines have classically been built on principles of mass production work horses. American trucks pull way more weight around than those slush box isuzus ( I did own a trooper once and it was sweet and I miss it ... but its safety was terrible.. but was like a safari truck ) not at all against imports.. just saying. The Ford Voodoo engine is a good example of them showing off a little of what people have been trying to kick sand at them ( cough cough pun intended for foundry shout outs )
Now do it with a 302.
I know right....soon as he said 347 i laughed
the same top en and cam in a 302 would be 7000 RPM + max HP and pretty radical.
mrhazel you guys realize a 347 stroker is a 302 bored and stroked, if they did all that to a 302 stock bottom end it’d make prob 380-400 maybe to the crank and then blow up from the bottom end being stock and not being able to handle it lol
@@JplGamer I realize what it is I have a 302 and no it wont blow up at 400hp thats just a poorly put together engine with a bad tune in it that probably beats the bearings out of it.
Plenty of 302s make 340 at the wheels without blowing up. Thats like 400 at the crank. Tune is everything.
Richard has done it on here actually
mrhazel I was mainly saying 400 to the wheels lol
Seriously, I want to know how to do it with a non-HO 302.
its the same for the ''non-HO 302'' other than the cam they use in video .. HO 302 is a roller block uses a hydraulic roller camshaft an uses a different firing order .. can use the parts in video if you have the cash just get a cam thats meant for your non ho block
@@codyramos3200 he can use this exact cam. All he needs is link bar lifters…
You forgot “a thick wallet”......
Cheap
Fast
Reliable
Pick two
I’d rather have the durability of the 302 over a 347 stroker. might not have as much power but it will last a heck of a lot longer.
why though? can you explain why it’s less reliable?
louis the 347 has a not so good rod to stroke ratio that puts lots of side loading on the pistons,rings,cyl wall
@@coyote5.02 yeah they must be more concerned with peak numbers than reliability. Thats a rich mans game
Bruce Lee in most cases that’s what engine builders usually do. it’s more about power then reliability.
Sounds costly
"alright guys the results are in as you can see we hit our goal" 499.6hp.......... I think you need to redo it and get that .4hp to make it lol...
my ears
Why do you need 347 cuin to make 500 hp? The stock 5.0 make 460 hp and pass emissions.
You must be talking about a Coyote 5.0.... a pushrod Ford Small Block is not going to make that kind of power stock.
@@Compcams1976 An ohv 5.0 can make 500 hp
F165 this is impossible! You’re talking about a stock sbf 302 5.0 stock at 500hp?? Where do you get this from??
@@Compcams1976 With a large enough cam, it will. You work for a cam company. I should not have to tell you this.
@@babyfacebabyface8519 Stock race cars engines make 800+ hp all day with a 358 cuin engine. That is 2.23 hp/cuin. A 302 cuin v8 x 2.23 hp/cuin would make 674 hp. Now lower the lift, duration and compression. That 302 can make 500 hp without racing gas. Companies create problem that don't exist to sell you stuff you don't need.
You don't know any speed secrets at all do you. Stroke and cam. Well no shit sherlock. I wanna see secrets like turning the pistons around backwards, port matching blending or backfacing valves. You know real old school shit that actually makes power for no cash. Money makes power BUT I wanna see what the old school guys did to make it.
Never been a Ford guy haha
James J. McCloud nobody likes a winner