Dyno session results are in!

[AdamIsAdam]

Hey all. I finally got my car on a dyno this weekend and I could NOT be happier! I bought the car, so I'm not bragging about my own work. With that being said, CHECK OUT THIS CURVE! The torque is as flat as Kansas and the horsepower looks like the price chart for toilet paper in the early months of COVID-19!

It's a 347 stroker. Short block by Ford Strokers (est 10.5:1). TEA Twisted Wedge 185 64cc heads. Custom made cam. Custom Pro Systems 780 Holley. MSD Digital, MSD distributor.

The car always starts right up, even in the winter without a choke. Never runs hot. Just drives great. And to know that it's got 385hp at the wheel (so maybe 450+ at the crank) with great, flat torque, that just confirmed what my butt dyno said: Snake goes good.

I'd love to hear feedback from others who have built similar engines or who just have something to say on the subject.

According to the racing calculators, with this power:weight and 3.55's with 25" tires the car is capable of low 10's! (assuming it could ever hook up of course!) Very cool.

With numbers like this, who needs a big block? hehehe

I was just watching Jay Leno interviewing John Morton who said Shelby only raced the 427 once. All the wins were in 289's. Mostly because by the time the 427 came out they were heavily into the GT40's.

https://youtu.be/6hhnwAYj-Jc

https://youtu.be/QboLm0fO7Yo


By the way, it made the most power with the air cleaner on and hood closed! Go figure.

[GoDadGo]

Anytime you are making over 1-FP of torque and over 1-HP per Cubic Inch to you are doing rather well so Bravo Adam Squared.
Also, an air cleaner of the proper design often smooths out the airflow reducing turbulence which often helps carburated applications.
As an example, my oval air cleaner hurts power once you get to about 5,200 RPM but looks cool as hell so it's on the car anyway.
The 14" X 3" round K&N assembly with Extreme Flow Top that was used by my engine builder worked well but aesthetically was Backside/Berth-Butt Ugly.

[KDubU]

Anytime you are making over 1-FP of torque and over 1-HP per Cubic Inch to you are doing rather well so Bravo Adam Squared.
Also, an air cleaner of the proper design often smooths out the airflow reducing turbulence which often helps carburated applications.
As an example, my oval air cleaner hurts power once you get to about 5,200 RPM but looks cool as hell so it's on the car anyway.
The 14" X 3" round K&N assembly with Extreme Flow Top that was used by my engine builder worked well but aesthetically was Backside/Berth-Butt Ugly.

I will agree with all your comments Steve but hey now what’s up with the hate on K&N extreme? They look good if you have the right engine. ;)

[GoDadGo]

I will agree with all your comments Steve but hey now what’s up with the hate on K&N extreme? They look good if you have the right engine. ;)

I just don't like the way they look even though I've seen them work and work well on my own engine when we ran it on the Dyno.
They function and work rather well and we even made around 10-12 more horsepower at 6,500 RPM so I'm a real believer but the look is a deal-breaker.
For me, it is sort of like if my wife was wearing a pair of hiking boots with a cocktail or evening dress instead of a pair of stilettos.
Call Me Shallow Steve Because This Time Form Isn't Following Function!
I guess it is sort of like my wife in heels.
She looks good, but she's not functional.

[NiceGuyEddie]

I have a very similar engine but with a smaller carb. My engine is 450hp at the crank - based on other engines built with exactly the same parts. Mine has never been dyno'd.

My torque curves are about the same to be "by feel" - although mine gets fuel starved above 5,000 rpm and I can feel it. I need a bigger carb.

I really enjoy my stroker motor and how it has so much low-end power. It's also pretty cool to drive up a big hill at a low rpm and the car pulls right up with no struggle - the sensation is similar to being pulled up a ski slope on a tow rope. I could not do this with my 302.

I grew up in Hicksville. Deer Park Avenue was one of the two Long Island cruising spots on Friday nights in the 80's....

[Geoff H]

Adam and Eddie, what intakes are you running?

Thanks,
Geoff

[Tony_G]

Very nice Adam. Congrats!!! I'm also happy with my 427w FordStrokers motor.

[Papa]

Nice flat torque curve across the entire power band! That's what you'll notice more than the 400+ hp number. My BluePrint Engines 347 looks very similar and is really fun to drive.

[AdamIsAdam]

I'm running a Performer RPM.

Yes, The torque feels great all over, but at the higher RPM it wants to RUN like mad!

I'm not originally from Long Island, but I will tell you there are MANY cruise spots now, and Deer Park Ave. is still one of them. OBI another. But COVID-19 is doing a number on everything.

Next season I'm going to try and organize a local Cobra run.

[AdamIsAdam]

I made another post but it disappeared. Strange...

I never liked the look of the X-tream K&N top either. But watching that Engine Masters episode on the air cleaner shootout made me a believer. But also in that episode was the surprising result that a flat bottom base improved every single filter over a drop bottom base (even when a flat bottom base with a shorter filter then the equivalent drop bottom base). So I wonder if my flat bottom oval base is more than compensating for the 1.75 inch short filter, plus it's rather large so there's a lot of filter surface area. Or the engine continued to make more power the hotter it got, something I've seen on my GTO. I'm told heat is not necessarily the enemy for an engine, you just don't want hot air in the combustion chamber.

Bottom line, 385HP @ wheel, or about 450+ at the crank, and a flat torque curve makes Adam a HAPPY Cobra owner!

PS I was playing with the wallace online calculators and 450hp, 2500 lbs with 3.55's ands 25" rolling tire size is a LOW 10 second car in the quarter! (assuming that power makes it to the ground via traction). Wow! I think I'll go Hellcat hunting next weekend. ;-)