Re: 2015 Mustang Ecoboost K/SA?
 

I don't know how much money you want to put into this project but Carlyle Racing makes a 15" conversion kit to allow the use of a regular sized wheel. Pretty sure the kit is bolt on so it would be Stock legal. This could be an option so you can run a 15" diameter wheel and tire combo, at least in the rrar

Re: 2015 Mustang Ecoboost K/SA?
 

I'm not sure I understand the problem(s). Take a factory built Cobra Jet, make sure it has the correct sheet metal for the required year. Drop in your Ecoboost and run K/SA. I'm sure someone will follow suit shortly. Anything else (less) is just a waist of time and money. Unless, you think you can run with a factory Cobra Jet with your showroom Mustang.

Re: 2015 Mustang Ecoboost K/SA?
 

Yep.

Take a CJ rolling chassis, add a crate 2.3EB engine, a G101 trans, a Holley or AEM EFI system and blast the K/S index and then proceed to get some Tuesday h.p.


You just know someone is going to do it....build a baby Cobra Jet

Re: 2015 Mustang Ecoboost K/SA?
 

No problem- just discussing the viability of the combo.

Man, I hope not.

Re: 2015 Mustang Ecoboost K/SA?
 

Not seeing that on Carlyle's web site.

Baer has bolt on brake kits for the front and rear of the S550 Mustang platform, that allow 15" wheels front and rear. Baer's kits are about $900 per end, and the rear one has no provisions for a parking brake. They claim their brake kits will save a bunch of weight. I think these cars will comfortably run under their current index(es) with the stock brakes (although I would avoid the Performance Package car because of it's even larger front brakes).

Alan's probably got the right idea- a set of drag radials on the stock rear wheels, an off-road down-pipe, a "tune", install the required safety equipment, and it should run under anywhere.

Re: 2015 Mustang Ecoboost K/SA?
 

Alan's probably got the right idea- a set of drag radials on the stock rear wheels, an off-road down-pipe, a "tune", install the required safety equipment, and it should run under anywhere.[/QUOTE]
Well, if that is the case, then a substantial HP rating is clearly needed. Stock Eliminator is not supposed to be that "easy".
Or, at least it was not, before all the new corporate "package" cars came into existance.

Re: 2015 Mustang Ecoboost K/SA?
 

Well, if that is the case, then a substantial HP rating is clearly needed. Stock Eliminator is not supposed to be that "easy".
Or, at least it was not, before all the new corporate "package" cars came into existance.[/QUOTE]

Rory's right here. Don't forget , 3 tenths came off the indexes less than 10 years ago, too.

Jim Bailey is also right. We know what will happen to this combo in the next year and a half.
So, if anyone is going to do it as a street car...get off the pot, as they say.
Then let us know if you can cut a light and run within 5 hun, back to back. Anxiously awaiting the results.

Re: 2015 Mustang Ecoboost K/SA?
 

Half a second away from the K index with drag radials on stock wheels.

I didn't hear them say what octane fuel they are running.That makes a huge difference in the tune. Most likely it has stock rear gears.

I would say that car is probably at the heavy weight limit for K


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

Re: 2015 Mustang Ecoboost K/SA?
 

Speaking of new Stockers....

I was at the 1983 or 1984 Winternationals and every single one of those brand new 1983 ( might have been '84 models) 4 bbl 307 Olds Cutlass Stockers ran in the 12's that weekend.

Those guys showed up with new cars and made it look easy

Re: 2015 Mustang Ecoboost K/SA?
 

Yeah, that's a Performance Package car. They come with 3.55 rear gears instead of 3.31, larger/heavier front brakes, 19" wheels instead of 17" wheels, and some other doo-dads.

.33 off the K/SA index. With an off-road down-pipe and no exhaust system, that car would probably be under index.

Re: 2015 Mustang Ecoboost K/SA?
 

I'm sure you guys know what you're talking about, and I'm not going down that road if the impending "Baby Jet" is going to make it impossible for me to continue.

Re: 2015 Mustang Ecoboost K/SA?
 

Nobody said it would be "Impossible to continue", it just may require you to spend some money and do some work, just like all the other Stockers have had to do for decades.

Re: 2015 Mustang Ecoboost K/SA?
 

He makes them. You just have to call. But if that's the case, off road pipe and a tune, that's the way I would go.

Re: 2015 Mustang Ecoboost K/SA?
 

Does it need a roll bar for K/SA?

D

Re: 2015 Mustang Ecoboost K/SA?
 

https://www.youtube.com/watch?v=vD94dVu8lqQ

See post # 7

Re: 2015 Mustang Ecoboost K/SA?
 

I am just trying to get this whole conversation clear in my mind, is this being proposed as some sort of cheap and easy way to build a Stocker (which it absolutely won't be)? In my mind there are an infinite number of better and cheaper ways to approach Stock class if that's the plan, buying someone's complete finished car comes to mind. Or is this just some sort of philosophical debate (which often happens on Class Racer)?

Re: 2015 Mustang Ecoboost K/SA?
 

Cheap way to build a Stocker ?....No

Easy way ? Not really if you plan to pull the interior out yourself to add a roll bar.

Philosophical debate ? Maybe...

...Or maybe the OP wants a Stocker he can drive to and from the track.

In the end, it's not a cheap Stocker

Re: 2015 Mustang Ecoboost K/SA?
 

Like Alan said, it will not be a cheap Stocker.
Someone will take their street car, do a few mods, go under the index.


Then there will be the hardcore racer that will buy a one, strip everything out, build a killer engine, destroy the index and put it out of competition.


Lets not forget what happened to the Buick Grand Nationals...

Re: 2015 Mustang Ecoboost K/SA?
 

Does it use something like a waste gate to limit boost?

Re: 2015 Mustang Ecoboost K/SA?
 

Maybe I should have said "not financially viable for me". :)

Re: 2015 Mustang Ecoboost K/SA?
 

Copy.

I also found this one, which will allow retention of the parking brake:

http://www.streetcarrfabrication.com/product/s550/

Re: 2015 Mustang Ecoboost K/SA?
 

If they will make this FWD conversion SS/GT legal, I will be more than happy to beat on the SS HP rating, I'd love to do it. Already have the chassis, just waiting permission to stick the motor in. I already requested the chance to make the change so I cold run the 2.3 single cam turbo motor for the same reason, just not having any luck getting NHRA permission. I will stay in SS/ES for the time being.

Jim Caughlin
SS 6019

Re: 2015 Mustang Ecoboost K/SA?
 

This is what I was thinking:

Used 2015 Mustang Ecoboosts are not nearly as hard to find as other less-expensive-ish Stocker candidates like a Pinto station wagon.

Being in the middle of the alphabet, it's faster than a lot of other less-expensive-ish Stocker candidates.

A used 2015 Mustang Ecoboost would not require a total body/paint/interior restoration, like a lot of older Stocker candidates would, just to have a suitable vehicle to start building a race car from.

I thought that I had spotted a combo that would not require a lot of work to get it to comfortably run under index. For me, I felt that would be enough- I don't intend to set any records or race any national events.

Anything M or faster is going to require a roll bar, and as some others have pointed out, it could be a good idea to install a roll bar even if not required to, simply because you may be racing against 170 mph "Stockers". So the work of pulling the seats, carpets, and some plastic trim panels, wasn't really a consideration. It also would give me access to be able to remove some of the sound-deadening materials while it was apart anyway.

And because it's a car that (at this point in time) appears to be capable of running under index on street tires with minimal modifications, it looked like an opportunity to skip the truck and trailer, which would make it a LOT less expensive than doing it with a truck and trailer. It would also be one less vehicle to maintain, and take up a lot less space at home.

It is not a philosophical debate- I have no desire to argue with anyone here. I have drag raced for many years, but have never class-raced before. I recognize that there is a lot of knowledge here- discussing this issue here seemed like a good way to be able to benefit from that knowledge.

But if there is the very real chance of a "Baby Jet" killing my action, then I would not want to waste my money pursuing it.

Re: 2015 Mustang Ecoboost K/SA?
 

Do you want to win rounds or just be sub-index? There is a difference between the two. I would propose to you that when it comes to turbo combinations, a street legal car and a consistent bracket racer (which is what you need to win rounds) are likely two different animals.

Re: 2015 Mustang Ecoboost K/SA?
 

Yeah, that is a good point- It always seemed like street cars that were fast enough to get into my bracket were easy pickings, because their drivers generally had little experience and generally had little idea how to dial their cars.

I wasn't so much thinking along the lines of a street car that I could race- I was thinking along the lines of a race car that wouldn't need a truck and trailer. As a foot-brake driver, I almost always went rounds, and was often in the money. I'm older now, and I don't know if I'd still be able to do it as well, but it just sounded like it might have been a fun little retirement project.

Re: 2015 Mustang Ecoboost K/SA?
 

I disagree. I run a Turbo car in bracket racing and its consistent and I can have a good light with it. It's a bit more delecate to stage with than a NA car but doable.

Re: 2015 Mustang Ecoboost K/SA?
 

Okay, another question- would a convertible Ecoboost Mustang make any more sense- there is no convertible version of the Cobra Jet.

The classification guide lists the convertible as being a 13.45 pound car, making it a natural K car, that I could add weight to run in L. The coupe is listed as a 12.78 pound car, making it a natural J car, so it would never be able to run in L- there will never be a "Baby Jet" in L.

Or is it just the fact that the "Baby Jet" would result in the engine's horsepower getting factored to the point that I wouldn't be able to afford to keep up regardless of what body I'm running it in?

Lol- I just noticed that there is no current record in L or L auto, and both of them have a 12.20 minimum.

Re: 2015 Mustang Ecoboost K/SA?
 

A convertible would be cool. There would be no advantage, because the rules are the same for both.

Re: 2015 Mustang Ecoboost K/SA?
 

No, running it in L would be bad very bad......really.




Tom Johnston STK #3177 L/SA '84 Cutlass 305

Re: 2015 Mustang Ecoboost K/SA?
 

A quick history lesson; One of the first, maybe the very first, Factory Ford Cobra Jets -that started the whole Cobra Jet program is a black convertible. It's still running, and a very valuable car in the collector car circles. If you're interested in using it for your starting point, "rumor" has it that it "might" be bought for between 250- 350K. You might even contract him to do the conversion for you - Hey - Food for thought if you're really serious about going stocker racing …..

Re: 2015 Mustang Ecoboost K/SA?
 

Thanks.

Re: 2015 Mustang Ecoboost K/SA?
 

Mr. 6130,
I don't believe the convertible would be exempt from hp increases on the hard top.
Considered same platform..

Re: 2015 Mustang Ecoboost K/SA?
 

Okay, so now that I understand what's likely going to happen to this combo- What if I built one in a somewhat less casual manner (to avoid having to buy stuff twice), keeping in mind that it's probably going to end up in F or thereabouts in the reasonably foreseeable future:

Smaller/lighter drag-type brakes that would allow fitting 15" wheels, light-ish drag-type 15" wheels, 275/60 drag radials, drag-type springs, drag-type shocks, and a drag-type converter for the stock 6R80 transmission...

...in addition to the previously-mentioned 3" off-road downpipe dumping open under the car, colder plugs, and "tune" of the OEM engine/transmission computer, on an otherwise stock engine and stock 6R80 transmission, in a relatively intact car equipped with the required safety equipment and fuel test fitting, and approved 100-octane unleaded racing gasoline.

The additional expense of more-appropriate brakes, suspension, and converter, would probably add about $4,000 to the original plan, which is significant, but it's not as much of a deal-breaker as the concept of having to go buy a used CJ roller, a rollerized C4, an 8" converter, a Holley EFI system, a properly-built Stocker engine, a truck, and a trailer.

If a "Baby Jet" ran 1.0 under the F index, and I was only running .2 under, it wouldn't be the end of the world. Like I said, I have no delusions of setting any records or running at Indy.

Re: 2015 Mustang Ecoboost K/SA?
 

Unless you live across the street from the track; I don't believe you can do without a truck and trailer. I did (in 1966!) but you can't be competitive in 2018.

Re: 2015 Mustang Ecoboost K/SA?
 

It might not be horrible- the race car would have functioning A/C and cruise control. With stock 3.31 ring & pinion, a lock-up torque converter, and two overdrive gears in the 6R80 transmission, it would do fine on the highway. I'm pretty sure I could fit an EZ-Up, a pair of folding chairs, a cooler, a folding table, a fuel jug, and a few other odds and ends in it.

I would miss having a pit bike, but walking would do me some good... ;)

Re: 2015 Mustang Ecoboost K/SA?
 

Pull a small trailer behind it like Drag Week

Re: 2015 Mustang Ecoboost K/SA?
 

That would be awesome to see a modern day K stocker driven to the track , qualify under index , be 100 % legal and pass fuel check.



^^ this.
Just put a trailer hitch on the Mustang

Re: 2015 Mustang Ecoboost K/SA?
 

No need- I think my skateboard would fit in the back too... ;)

Re: 2015 Mustang Ecoboost K/SA?
 

That sounds like a reasonable goal to me.

But how about a modern day L Stocker driven to the track, set a national record, be 100% legal, and pass a fuel check?

All a convertible Ecoboost Mustang would have to do, is run a 12.20...

Re: 2015 Mustang Ecoboost K/SA?
 

Then tear down a factory stock 2015 car, put it back together, and then drive home.