Dyno Testing The 8,000rpm 363" Small Block Ford - Part 3 

794hp with AFRs? Which ones? Rich Holdener did a RU-vid where AFR 225 out the box made 660Hp/565tq on a 427 with super victor, 12.25:1, and a 272@.05" cam with .735" lift. Edelbrock Vic Sr ported to just over 400cfm made 750hp/615tq on the same combo.

@@dennisrobinson8008 afr 1451. You have to throw the compression at it, cam the daylights out of it, spin some RPM, and feed it some good fuel.

​Did you guys port them? From the AFR website it says they peak at 331CFM@.800" with 295CFM@.500". I could see like you say with a 14-16:1 compression and the C16 or E85, they will make those numbers. @@turbojoe9554

Fuel type and compression have little to nothing to do with rpm

@@aaronliddell4280it sort of does though your gonna make a lot less power with low compression and pump gas

​@aaronliddell4280 then why they run nitro methane in funny cars.

@@fordnut4914 "those" engines are highly boosted, totally different. N/A nitro engines "like" to be loaded, a little lower RPM.

I think Freiberger did that one already on one of his small block shootouts.

How did you go about buying/building one? I want to put one in my fox

@@connerluke8377 Fordstrokers, woody built mine and he's a genius. I told him exactly what I wanted and he more than delivered.

6" on a 8k rpm engine?????

​@@mistersniffer6838 I am building a 8000+ rpm 502ci short stroke Big Block Chevy with 6.535" rods. Nothing wrong with 6" rods in a SBF

@@bigboreracing356 - Thought that was a bit of a rod to throw for 8k rpm!?

@@bigboreracing356 - Your right. I was in a hurry and didnt explain it correctly, was just trying to type something. I meant a lot of rod to throw around, in general.

@@bigboreracing356 - okay

fuel pressure and/or floats too high

sv is too big for those ci

Super victor would be perfect for high rpm

Ditch the EFI for a well tuned carb and a single plane and she’ll make 500 EZPZ

@@MaxDankOG nah bro, i want to keep my car period correct, but OEM+ i have enough hardware on this engine that should support 500 N/A WHP. i just have to get to it.

@@PANTYEATR1if you have a 427 ci motor that only makes 435 hp, you are leaving a lot on the table even with a Ford ecu. Plenty of 331-347’s make 425hp easily. Without knowing the parts involved though it’s anyone’s guess why you aren’t making good power

@@poconofrank9476 thanks for your input and confirming what i was thinking about my lack of power. I looked at my dyno sheet and I made 434whp and 474 wtq. My car is managed by the 95 factory computer with a tunable chip. It's an ordeal to tune the car this way since there are so many laborious steps, so i think my tuner didn't want to deal with it, since it's old tech and laborious. Here are the specs of my engine that i remember: 10.8:1 compression, .600 lift cam, AFR 205 CNC heads, Trickflow 351R upper & lower intake manifolds, 75mm throttle body, 60lbs Deka injectors, 8an fuel lines to and from the tank, billet fuel rails, Jessel shaft rocker system, long tube headers 1 7/8 primaries to 3 inch collectors and 3 inch exhaust to the rear, MSD digital 6AL. If you have any more questions, feel free to ask.

@@PANTYEATR1 on paper every component is really good, and it certainly seems like it is down on power. Was the cam degreed properly? Is it a manual or auto car? Obviously automatic transmissions suck up more hp than a manual will. Anytime you make more torque than hp, typically there is at least one component that is holding the potential back. What cc chamber size are your heads? I’m tempted to say your motor might be happier with a bigger cam, perhaps a dual pattern would wake it up? What is your timing set at? There are a lot of variables, and I’m just taking a shot in the dark saying bigger cam. It could just as easily be a tuning flaw. It would be best to consult a reputable engine builder who is knowledgeable with Fords. You could also try posting on one of the forums. Lots of experienced people who are very helpful seem to be on there frequently… Best of luck my friend!!!

😂😂😂

I had a mentor that built a 289 pushing 504 HP@9,000 rpm, and raced it all season long. His 1st session was Black Flagged at Daytona. They swore he was running 427SCJ. 168.76mph lap speed. 210 in the back stretch. They teched it and conceded. He was the only one stomping the gas pedal in the turns. Ford wins. Now gear drives let Chevies keep up. Push the inside wheel down and you can go faster.

To many variables to tell you how high you can rev it. I turn my hyd roller 4.000” stroke LS 8,000

@@JacobVillemain which Pro Systems carb is that?

It's a simple answer. You have 600hp at 6100rpm. You shouldn't go much further than 6600rpm. There's no magic above that and more importantly no point. Whoever dyno'd the engine should have told you if you asked him. Comparing a LS to your windsor is crazy. Not even in the same realm. Dart vs LS the LS has better oiling,6bolt mains,better valve train geometry,windage,head clamping force,head flow, yada yada yada. And it's fuel injected. 600hp from a 363 is pretty damn good. Your combination change if needed would be determined by your dyno graph.. If your hp and ftlb drop like a rock after peak you're in need of changes but if it stays fairly flat you're ok if you have a balanced rotating assembly. A dyno graph that's wavy means issues and you have to look at Air Fuel Ratio, timing and fuel pressure closely to diag what's going on. But a fairly smooth graph is what you want. I don't know this guy but doing dyno pulls with no water pumping(has no electric motor on pump)is not a good practice one for the heat and two how are you testing for a cooling blockage or leak. He could have a pump in the holding tank but again he's not using the pump and some Windsor pumps turn backwards.

I thought about that to but he can't run it that long with no water flow. No motor on the pump. He can't be running more the 5mins a time. The rings heat cycle is off. They might be brittle now.

Higher Compression gets a faster respons. A dragrace or Nascar engine for example with 13 or up to even 16 to one Compression gets a much more explosive respons.

tuning makes it rev quick. Shorter stroke just raises the critical limit or piston speed thats all .

@@gordocarbo Tuning? My friend switched to a smaller lighter fly wheel and clutch now his car shits a lot faster. I’m not sure I understand how tuning plays a role in this.

@@surreallife777 Im sure that helps but a good tune gets that snap in response regardless of clutch weight.

Customer does not want to run E85.

If you can find it. I havent seen an e85 pump for many yrs

Yes it does.

8.2 deck 302 block 4.125 bore x 3.400 stroke

yes

it's because he has a 4.125bore not a four-inch bore

it's a big-bore 347 4.125 bore with 3.40 stroke crank equals 363

@@boostedperformance4529 i have benn driving a 302 since I was a kid and I have never heard of that, why would you bore a 302 to the maximum and make the walls paper thin that's not a very good setup for the street

@@boostedperformance4529 you can't go more than 60 overbore and 347 cu stroker

Did you watch the video ?????

Itll cruise just fine with a low stall converter around 2200+ idling is the issue not where it makes power, you want a converter to get you enough off idle the cam isnt pushing you fwd somewhere in the 2200rpm stall range

Im a BBC lover ans have built many of them . My last was 565 ci. You must have one huge camshaft if yours is still making power at 8600 . At least 850 lift 290plus at .050

9200

@@hankclingingsmith8707 9000 is what I had it balanced to spend too

@@lennyperson6441 exactly my point

Totally agree on the 7k. Rather have a higher figure there and stop. I guess it’s a good test for nothing blowing up at 8k. I guess anything to 7500 is awesome for me. Do any hydraulic roller cams go past 6500 rpm, or do they fail/collapse when pushed past 6500. Love to know anyones insite

@@mikepaul396 Can start pumping up at 6200. Higher rpm engines just use a solid. No parts to fail

You must have missed him saying that the client wanted a 8K engine, power is limited by fuel octane, mentioned several times.

I'm sure he was talking about the stands.

Remember they are intentionally keeping the CR low.

@@danquinnell3502 Great point, my 10.7 to 1 399ci 1st gen sbc runs into the same situation with bigger heads, cam and carb. My cam is 260/266@.050 solid roller with a 110 LSA. Dynoed on Kwik Fill 89 pump gas it did 641@6400 and 560 ft lbs @5700. Heads are Brodix 17* C-Series with a QFT 950 BD. This is 99% street.

Sure you can..just buy out of state.

What heads were you using?

@@Greenskies321 D3 Rousch but they aren’t ported to nascar spec. You can get the same flow from lots of sbf heads. Lots is being missed in camshaft and inlet manifold

Can you please provide video proof?

@@sean5comet type in v8 Supercars into RU-vid search bar. Before the 2023 rule change, all cars had 302 ci engines

D3 on 302 probably made no power under 7000.