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.