315 TIRE/68 Mustang

[kmcanally]

Well sorta...this thread would be more approriate in the suspension section because that is what it is going to take to get this to fit. The leaf springs will have to be replaced with a 4-link coil-over setup...and the inner wheelhouse move flush with the frame rail...

[kmcanally]

problem with the pics...hmmm...this has never happened before...

[kmcanally]

still no work....1600x1200...check....160kb...check...any ideas?

[kmcanally]

and another try...

[Travis77]

Why not mini tub, and use your leafs? BTW that tire looks killer under there. Glad to know I'm not the only mustang owner who wants this look.

[kmcanally]

It does look killer and I want this look in a very bad way si I bought this used tire on Ebay just to mock it up.

The leaf springs would still have to be relocated inboard at least 1" and I do not see an easy way to move the front spring mounting point. Any ideas? I could make some offset spring hangers (ala the DSE offset shackles) for the back. Because of this I thought it would be easier to fabricate a 4 link coil-over design. A swedish dude at www.viking mustang.com has designed a simple almost-bolt-in set up that is interresting...

I placed the tire in the wheelhouse at the same location as the 275/40-17 tire I normally run on this car. So the tire in the pic is hitting the leafs and the front of the inner wheelhouse.

[kmcanally]

oops! thats www.vikingmustang.com

[Travis77]

Surely there are shops in the Dallas area that can do a mini-tub in your car. I am in Houston and there are several I would not hessitate to use. I really hated to spend the money to have it done, because I knew I could do it. Anyway, I had a guy help me out with mine and took pictures the whole way through. Unfortunately it was not the prettiest of jobs. I do not know what your going to have invested in your car, but I would recommend getting a reputable shop to do it. More that likely my body guy is going to clean alot of it up. But if it involves too much work or money, I told him I wanted a tube chassis with a new LS7 motor.It sucks a little that there aren't any quick tub kits offered to mustangs.

[kmcanally]

If I was to take it to someone it would probably be Mike Minnettes shop in North Dallas.

Did you already mini-tub your car? If so then how did you mount the front of the leaf springs? I would love to see some of the pics...

My car is almost done. I will finish it with a 275/40 tire....some time next year I will do the deed and probably do it myself.

[1970cuda]

dse has a mustang in their shop. they are working on their four link for it an a possible mini tub kit. they are mini tubbing the car and putting sub frame connector in it for sure. there will be some other neat things done in the future with it too! :icon_razz :jump:

[kmcanally]

Aa DSE kit for the Mustang would be sweet. Would that be your 67 coupe they are working on 70 cuda man?

[1970cuda]

ah maybe! who said it was a coupe?

[Steve1968LS2]

Aa DSE kit for the Mustang would be sweet. Would that be your 67 coupe they are working on 70 cuda man?I heard from a little bird that they are working on it..

I follow all 68 projects VERY closly nowadays.. ;)

[Travis77]

I searched all over for a tub kit, but found nothing. My fastback is tubbed, but I am going to be running a monoleafs not 4 link. It's great that there are kits coming out to ease this job. Not that I'll have the only fastback w/315's or 335's, but I might have to speed this project up a bit.

[kmcanally]

there was a black 65/66 fastback in a mag w/335's (18" TTII's)....the proportions did not look right...it definitely was not the same "look" taken on by first gen camaros with this much tire...Ill find the mag and post it later...

[kmcanally]

ah maybe! who said it was a coupe?

uhhhh...maybe from your profile?

[kmcanally]

that mag was the December 04 issue of Mustangs and Fords...

[Travis77]

Don't know how the yeck I've missed that article. I think it looks good, but might be a little over powering. It might look better with a little more baskspacing though. That's basically the exact car I am starting on building, but a 67. I'm just trying to decide if I should narrow my rear end, or go with a more modern looking less aggressive 8" backspacing. Anyone have any pics of this wheel combo on an old stang?

[Stangonline.com]

Been looking at various kits out there, as I am going to eliminate the leafs as well for a planned 315 :) www.griggsracing.com has a watts link setup for about $3k that looks tempting.... just a lot of dough. :)

post a pic of just the car without the tire too and Ill try to photoshop the tire pushed into the wheelwell a little more to see what its going to look like :)

[Stangonline.com]

https://static1.pt-content.com/images/pt/2005/06/32-1.jpg

[kmcanally]

I will take some pics later for the photoshop....in fact I would like some chops of this car with a 315 tire and both Cobra R and Bullitt wheels (both in silver). Can you help?

I have seen the Griggs Racing setup and agree that it is pricy...plus you can not run the exhaust over the rear with the watts link.

Right now I am considering buying the Air Ride (or fabricating a copy) mounting assembly without the air bag shocks. This is a triangulated 4 bar design that does not require a panhard bar or watts for lateral control. I would run either Bilstein, Koni or QA1 coil overs in place of the air bags. The only welding absolutely required is on the rear end housing for the upper bar attachements. This way you could test verify the design for proper handling and then fully weld into the chassis.

[kmcanally]

re the Air Ride design...the tire clearance gained from this setup will likely only allow no more than a 315 tire to fit. This is because the lower bar connects to the original front leaf spring mount. For a little extra clearance this bar could be offet a little to the inside of the car.

How about this idea for an inexpensive coil over conversion....why not modify the original lower shock mounting plate for the lower bar (or weld on a traction master bracket)....connect the front of this bar to the front leaf spring mount....mount the coil over shock in the original shock position...for the upper bar chassis mounts fab a bracket like the Air Ride one that bolts to the snubber mount and sandwiches in between the upper shock mount...again the bolt in of this bracket could be temporary until everything is proven before fully welding it in or maybe leaving it as a bolt in...also a solid spacer between shock mounting plate and rear end housing spring perch would maintain the same ride height as the leaf spring did.

still need to modify the inner wheel housing by moving it flush with the inner frame rail...

[kmcanally]

Here is the Martz Chassis 4 link

[Stangonline.com]

I will take some pics later for the photoshop....in fact I would like some chops of this car with a 315 tire and both Cobra R and Bullitt wheels (both in silver). Can you help?

I have seen the Griggs Racing setup and agree that it is pricy...plus you can not run the exhaust over the rear with the watts link.

Right now I am considering buying the Air Ride (or fabricating a copy) mounting assembly without the air bag shocks. This is a triangulated 4 bar design that does not require a panhard bar or watts for lateral control. I would run either Bilstein, Koni or QA1 coil overs in place of the air bags. The only welding absolutely required is on the rear end housing for the upper bar attachements. This way you could test verify the design for proper handling and then fully weld into the chassis.

Sure, im not a photoshop expert, but I can give you an idea.

On the air-ride - Seems like that would be a good way to go as far as exhaust fitment. The only problem with that setup is that mustangs have used it since forever (79?) and usually to optimize the setup, people go for a panhard bar or something to get some side-side stability as the 4 link setup was a little sloppy. Im not sure what AR does, but OE 4-link used a rear swaybar as well.

I also would like rear exhaust, but I've almost given up on it. All of the options that would allow a 315 tire and pretty good handling leave no room for exhaust :(

Jeff

[Stangonline.com]

Wonder if there is room for a rear suspension design like the 05 Mustang has?

[MrQuick]

Theres plenty of room to be made..."smiles wisely as he installs a new blade into Sawsall" Most set ups can be modified to run a panhard instead.

[kmcanally]

Im not sure what AR doesJeff

What they do is triangulate the upper arms to give you lateral control
without the panhard bar or watts link.

[kmcanally]

Since this car is so close to being finished I do not want to start cutting on it now, maybe in the future (the Martz 4 link coil over conversion for $1250 seems like a bargain).

But I am itching to repalce my Cobra R wheels with something else before I finish the car and it would be nice to go a little bigger in the back at the same time. Since my budget is limited I have been considering 17" Bullitt wheels using the same 275/40 rear tire that I already have. These wheels are available in a 17 x 10.5 but with the 315 tire will not work without the surgery discussed in this thread.

While crusing Ebay I came across these 18x10 Mustang FR500 wheels. These wheels are simlar to the big dime Forgeline wheels on steve1969ls1's new Camaro but at a fraction of the cost at less than $600 for a set! Combine this with a 295/35 tire and I think it will fit without any major mods since. This is basically the same height as my 275/40-17 tire and the section width is .7" narrower than the 315/35-17 tire. And since the .7" is more than the 315/35-17 tire needed for clearance these should fit. What do you guys think?