Lexus SC300/SC400 front suspension

PROSTOCKTOM said
That narrow CV crossmember is fabricated steel and is $795. If your going that route you might as well just build your own. My idea for wanting to using a Lexus clip is to gain width inside the engine compartment and shedding weight at the same time. After some research using a 92-98 SC300 will give you 10.8" brake rotors and the 92-00 SC400 99 SC300 will give you 11.6" rotors. If you still want more the 95 LS 400 brakes are a direct bolt on with 12.4" rotors and a very nice aluminum 4-piston caliper. Then if your all out road racing the even larger brakes from a Toyota Supra also bolt on. More options for the guy that likes to play around with projects.

Tom

Even shortened the crown vic front end is over 62” hub to hub though, which means like an extra 1.25” of backspace will be needed compared to a 73+ Mopar disk set up. With narrower rims that might not be a problem, but the diameter and brake clearance can be a problem. Most 15” rims won’t clear the brakes with much more than 5” of backspace, which means 15x7’s probably wouldn't work, you’d need at least 5.5” of backspace to on a 15x7 just to run a 225/60/15 on the narrowed CV front end. Now, you're talking Ford brakes and not Mopar so that backspace clearance wouldn't be the same, but 5.5" is a lot for a 15" rim. So you'd probably have to use 17 or 18" wheels, and those would need an offset starting around +40 for 225's and going up from there.

What is the actual hub to hub width on the SC400 spindles? Working backward from the track width using the stock wheel specs I came up with ~63.8” earlier. If that’s accurate, the Lexus front end would require ridiculous amounts of backspace. As in, add 2.1" to what you would normally run on a 73+ Mopar set up. You'd need wheels with a +60 offset just to run 225's, and the 275's I run would need a +80 offset. You're not going to find that.

I totally respect the ingenuity, but if those hub to hub numbers are right neither one of those would be a very useful front end for an A-body. If you can't put decent size tires on it there isn't much point spending that kind of time on the suspension upgrade.