I'd say that having two points bolt up and the other two only a minor fab-weld in is pretty much a "bolt in"
67 Fastback body on 2005+ chassis?
- Thread starter Nemesis67
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I'd say that having two points bolt up and the other two only a minor fab-weld in is pretty much a "bolt in"
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Rusty67
Dirt-Old 20+Year Member
As my dad's old highschool friend use to say:
Nothing EVER "bolts right in". Theres always hacking and fileing and hacking and cuting and cuting and fileing and filling and welding and hacking.... ect.. ect...
Nothing EVER "bolts right in". Theres always hacking and fileing and hacking and cuting and cuting and fileing and filling and welding and hacking.... ect.. ect...
I'd say that having two points bolt up and the other two only a minor fab-weld in is pretty much a "bolt in"
Look again, you probably saw a DVS kit or a modified IRS cradle. I wish it was even a half bolt-in. I have two Cobra IRS drop outs. None of the 4 points of the Cobra IRS bolt-in to a classic (65-70), unless you consider the foxbody a classic. All 4 mounting points on the Cobra IRS cradle are twisted inward as well, not perpendicular nor parallel to the body. I made mine a bolt-in.
The two front mounting points are narrower than the original leaf spring mounting points falling well under the frame rails.
Here's a simple bolt-in.
This pic shows the rear upper mount wrapped around the frame rail, I shaved about 1/4" off the inner surface off the bushing housing and welded a tab that wraps to the other side of the frame rail. The through bolt goes through the frame at an angle, not perpendicular to the frame.
From DVS website, note the front mounting bracket bolted to the frame rail.
base kit is $1699 to make it a bolt-in.
http://www.dvsrestorations.com/irs.html
From reenmachine
Note the rear upper mounting brackets.
...and the front mount
...and another good shot showing the angled bushings
Np, just wanted to shed some light on how insane the process is. I've been trying to find those vids for a while now, i was kinda surprised it wasn't finished yet, but then again the mustang isn't the only thing he's doing.
Good for him, if it makes him happy. But its a lot of work that I'm not sure its worth in the end.
The mods to the body that he's done will definitely change the look of the car, perhaps for the worse but that's just me.
Good for him, if it makes him happy. But its a lot of work that I'm not sure its worth in the end.
The mods to the body that he's done will definitely change the look of the car, perhaps for the worse but that's just me.
Look again, you probably saw a DVS kit or a modified IRS cradle. I wish it was even a half bolt-in. I have two Cobra IRS drop outs. None of the 4 points of the Cobra IRS bolt-in to a classic (65-70), unless you consider the foxbody a classic. All 4 mounting points on the Cobra IRS cradle are twisted inward as well, not perpendicular nor parallel to the body. I made mine a bolt-in.
The two front mounting points are narrower than the original leaf spring mounting points falling well under the frame rails.
Here's a simple bolt-in.
This pic shows the rear upper mount wrapped around the frame rail, I shaved about 1/4" off the inner surface off the bushing housing and welded a tab that wraps to the other side of the frame rail. The through bolt goes through the frame at an angle, not perpendicular to the frame.
From DVS website, note the front mounting bracket bolted to the frame rail.
base kit is $1699 to make it a bolt-in.
DVS Restorations, Inc. - IRS for Vintage Mustangs
From reenmachine
Note the rear upper mounting brackets.
...and the front mount
...and another good shot showing the angled bushings
It's been a few years since I saw the article, but the front attachments as I recall bolted into the leaf spring eyes and the rear only required a simple pair of brackets bolted or welded to the frame rails. This was a black 67 Fastback with a DOHC 4.6. The owner was in the military. I think maybe he bolted the front inboard of the spring mounts using another bracket welded to the chassis, seems like the outboard end of the bolt went thru the inboard leaf spring eye.
The cradle would have to be modified to bolt in like that under a 65-70. Its an interesting mod and would simplify the exhaust clearance issue.
It's too bad your kind of limited on wheels and tire size with the irs. I looked into it a couple of months ago when a friend offered me the one out of his '03 for $350. I thought about trying to get shorter half shafts and making up some custom control arms if it could be done, but never went any further.
Found it: Bolt-in IRS
Installing Independent Rear Suspension In A Classic Mustang - Mustang & Fords Magazine
Installing Independent Rear Suspension In A Classic Mustang - Mustang & Fords Magazine
