144.00 mph in FAST

I guess I have to update this picture

9.824 @ 144.0

Congrats to Dave Dudek and Rick Mahoney

Wow.

Dudek knows what he’s doing! That officially puts the Hemicuda as second fastest car ever in FAST behind only the 69 L88! You know he’s gunning hard for the 9.77!!!

getting quicker

144 mph has to be getting hairy on stock brakes and tires! Do they allow an upgrade for brake safety or does the car have to run the original brakes? At 150 mph NHRA will require a parachute which won't look stock......

Donny, what day was this? Today?

Yes

you can say that again, but he missed by .001

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Maybe?
Dont think they even require a bar in those cars... crazy

looks like there is a bar in the picture posted running through the package tray?

the Cuda is certified to 8.50

Is it a requirement in that class to have a bar at 11.50 or quicker?

Yep, you can see the cage and a window net.

While FAST does not enforce any safety rules, the tracks we run at do, We are not big enough and we encourage our racers to follow safety guidelines.

Is this Cuda a replacement for the Road Runner, or is it a car Dave built an engine for, or something else? I know the Road Runner was sold, but I'm out of the loop on the rest of it.

Nice. That's insane on those tires.

No doubt the mineshaft air helped to make the mph, but the cool track doesn't do a lot for traction. It's always a balancing act on skinnies.

I looked the car over today and liked how the X bars got around the door panels and if I remember right, column shift. Would fit right in the show car field. The black 63 Ply max wedge sitting next to it was no slouch either.

RR was sold, it raced at MIR today too.

https://www.facebook.com/FASTRacingSeries/

lots of pictures and timeslips

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I believe D/A was around 2000
Doug

Thought they were racing in Martin Michigan. Temps were in the mid 30's overnight and in the low 40's for most of the day here.

Didn't realize this was in Maryland. My mistake on the mineshaft air then.

Black '71 Challenger for your next car, Mr. Dudek.

To anyone in the know ....is there a cut-off for the years allowed in this class? 144 mph is mind boggling hell my car has been a bests of 142 and that's with aluminum heads and a Dominator.

55-79

Excellent job!!

9.776 ...... sweet

Congrats to Dave and Rick! That is an awesome performance from the HemiCuda. Long live Hemi power.

To answer a couple of questions, brake up grades are allowed, in the name of safety.
Rick Mahoney owns the Hemi Cuda, and Dave Dudek is doing the driving.

That is incredible! Definitely making a LOT of power!

That’s got to be close to 800hp through stock intake, carbs and manifolds . How is that even possible? Are they still limited in the “sound” or can they go nuts on cams ? Would love to see one of these events.

That's what we were talking about at work this morning. I get ported heads, big compression and big cubes but it all has to suck through the tiny straw of an intake and carbs!

I know, must be some serious modifications to the intake and exhaust manifolds

Seems like I recall on one of his old motors they cut open the intake, milled out a bunch of material, did a lot of welding, and basically made it a big single plane?

And it has to exhaust through a two and a half inch exhaust system with exits in the stock locations, through mufflers that sound stock at idle.

Closer to 1000 than 800.

I am guessing that is more than 900 probably close to 1000HP and probably not much over 500 inches - There is no limit on cams or engine size. What is done to those cars is unbelievable every thing is thought out - every ounce is removed that can be - The engines are extremely trick and they are not afraid to turn some RPM with them

Actually, there is a 560 cubic inch limit on everything except Ford 385 series Lima motors can go to 620. Camshaft must produce a correct stock sound at idle.

I was standing around the 1000' mark when Dave ran the 144 mph pass. My 5.7 Challenger is louder at WOT through the stock pipes than the 'Cuda. Very impressive to watch that car go down the track each time.

I’d be curious to know what the cam specs might look like in an engine like that.

900 lift roller

I have a feeling that the cam specs only tell you a small part of the story. I'm not up to date on FAST engine builds but the little bit I played around with this stuff years ago taught me that the relationship between overlap and low lift flow was really important. My guess is that the heads have been modified to reduce low lift flow which would then allow more overlap to be used. That was the trend a few years past, not sure if they are still on that track or if they have gone a different route. I think it gets extra tricky with Hemi heads. These guys are making NHRA super stock type of power levels but with a lot more restrictions. Of course, they do have more inches and more compression but no headers and no billet cross ram intakes. Very impressive. Can't even comprehend the amount of work that goes into something like that.

Be funny to watch one of these cars pull into the NHRA stock lanes sometimes. They look a lot more stock than any of the NHRA stockers.

These cars make you second guess the need for lightweight aluminum wheels, Rear wheel tubs with huge sticky tires, gutted interiors, and many other race car parts that people think are must haves. People who have not heard of this type of racing think your crazy when you tell them how fast they go on such narrow tires.

Until the reality of what it costs and all the R&D involved to build a FAST car of this caliber sets in.

They were well over 800 hp a long time ago when the car's were in the mid 130s. I wonder what the cars actually weigh.

You know there is a bunch of genius, money and effort in making the motor, transmission and drivetrain appear different than they are, but I don't think there is any hiding from the 2 1/2" exhaust system.

Yes, I'm sure these cars are very pricy to build. Heck, just look at the paint and bodywork.

I just like them for the shock factor. Years ago people would have said what they are doing now is impossible given the restrictions they have to work under..

I’m sure the restrictions have changed over the years. I would be curious to see what an engine like this cost to have built.

So impressive. Just think if they were not limited by tire type or exhaust, not to mention “sound”. Probably close to an 8 second ride, still looking like a factory car w sticky tires, headers and exhaust.

I doubt if you could go this fast @ 3800-3900#? with much less than 1000 Dyno hp. There is talk of close to 9000rpm. What would that take? SS/AH style valve train. Biggest bore possible. If I was a betting guy I’d say 4.600x3.500. The plenty of time developing the intake and cam. Can’t even imagine the amount of time, effort and cost of this build. Congrats to Rick, Dave and their team. Us mortals still need light parts and headers.
Doug

If you go to their FB page linked earlier, there's an in car shot of a 68 Hemi running every bit of 9k on the tach for 1st to 2nd. Such a unique sound through that exhaust. Unreal to say the least, I'd assume every single part on the car is changed/modified/tweaked. If they are sandblasting fuel lines to open them up for more flow, they're likely doing something to the exhaust piping too. Every little bit helps.

Didn't Dudek put slicks on the Roadrunner once and pick up 7 or 8 tenths?

That is too cool!! Love that it looks stock!!

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ and smart people

Here is where we stand..........

It's funny you say this......i wanted to tell a semi type gear head at work about this mind boggling mph and could not figure out how to tell him. He will not get it.

And how about that Duster! You can somewhat understand how a hemi can make big hp w huge heads, big cubic inch potential, dual quads, etc, but 127mph out of the small block mopar head, intake, carb combo is pretty darn impressive too.

We tried explaining to a non-car guy at work the other day what our cars do. The only thing he could relate to was 0-60mph times.

When I told him mine does 2.12 0-60mph he was blown away. Especially since it was sitting in the parking lot.

I’ve had some involvement with a few cars on that top 30 list.

It was a very interesting build with excellent results 🙂

I’d like to Thank Rick Mahoney for giving us the opportunity. Much appreciated!

Yes, and look at the cars that are below it.

Would like to know more about this car.

I feel the pain of trying to explain F.A.S.T. cars to "car people"..............it's like talking to a brick wall.

talking about it over on YB and one thread is how... i replied the battery looks stock but it does not means it weighs that much,

I DONT THINK THE 71 MUSTANG SHOULD HAVE COUNTED SINCE IT HAD SOME VISUAL THINGS THAT SHOULD NOT HAVE BEEN ALLOWED IN THAT CLASS. OR SHOULD I SAY NOT IN THE SPIRIT OF THE CLASS.

I'd like to see a power adder class for Paxton equipped Shelby Mustangs and Mr Norm's 340 Demons. Think some Studebakers also came with them as well?

The duster is a 71. In 71 you get a better flowing intake manifold, and a higher cfm carb (thermoquad), but you have a much worse flowing passenger exhaust manifold when compared to a 70. It also is all cast iron and heavy. Congrats Dave and Rick, the cuda is stunning!

I didnt realize that the regular hp exhaust manifold cars (A12's) were now on the sunny side of 130 mph.

These FAST cars are VERY impressive to me !!!!

A D/SA Duster at 3125 pounds stock intake carb no porting stock stroke with a .451 lift cam went 9,96. No telling how many cubes that Duster has

Ok FAST experts, non Mopar question, wonder why there isn't a 70 model LS6 Chevelle on that list somewhere?

Weight. They were heavy...3900-4000 lbs. The LS6 doesn’t get you anything visually over any any other big block Chevy. The L88 vette is tops cause that allows you to use aluminum heads.

Now a ZL1 clone would net you another 100ish pound savings over other chevies!

It’s really simple.
No one running that combo has put forth the $$$$ and effort to make it happen.

I highly doubt that combo would be a contender for the top spot, but I have no doubt one of those could be on the top 30 list with a high effort build.

Shows my non Mopar ignorance, I thought the LS6 was an aluminum head engine...

I am in NO WAY comparing how my junk ran to the FAST cars, just giving info In 1985 I had a LS6 crate 454 I rebuilt in my 72 SS Chevelle , stock rec port heads, & a small hydro flat tap cam,, 230 @ .050 , 4050 lbs, , 12.70 @ 107 in the Southeast Texas heat, open headers

Where do you get the 2.12 0-60 MPH number from?

Wallace has a calculator that you enter your 1/8th mile time and mph and it calculates 0-60.

Same basic engine combo in the 67 Chevelle that’s on the list.
Doug

Donny, Do you have a list like this for your Pure Stock class?

https://www.youtube.com/watch?v=S0ila1DrUHE

Still working on 2020

Thanks for posting this information DonnyBrass !!! very cool

I watched the video of the Hemi Cuda and noticed the rear chassis rising after staging the car before the launch. Does that mean that the pinion snubber is being used and is adjusted close to the chassis? I was told that Dave was not using the snubber on his Road Runner.

That’s just the engine pushing against the converter. Mine does the same thing but worse.

Bill

No. The differential pinion is moving up, trying to flip the diff over backwards, the opposite direction of the wheels trying to rotate forward. (...for every action there is an equal and opposite reaction.). This tries to wrap up the leaf springs into an S, and plants the rear down towards the ground, which lifts the body.
A snubber, once it contacts the floorboard takes advantage of this further and plants the rear even harder and further cause the rear of the body to rise even more.

That class is just unreal!

That car flatout FLIES after the 60'!

There is no snubber on the car, I don’t know someone that runs one. it is just climbing on its suspension. The rear shock extension is really soft. Soft enough that it can separate by rotating the housing out. A real fine balance between to much/fast separation and bouncing the tire and leaving some “hit” on the table. My car doesn’t like when it climbs that much on the converter. A click tightening up the rear extension stopped it. For me with the rear up like that it it pulls the center of gravity forwards reducing my % of rise. Which in an leaf spring A body is horrible to begin with. I’m happy if you can see the car transfer weight and the axle separates about 1” and holds it like that through the front suspension topping out. Maybe I should get some Sears coil overs? 😇