What are the pros and cons if any using the Unlawful rear trianulated system versus the cal trac. Is there a 60 foot delta or is this system more for handeling. can someone shead some light on the differences??

Thanks


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Kiddart1

The Caltracs are just a fancy "slapper bar" system. Caltracs are a few hour job with NO welding and leaving the rear end in place.

The triangulated systems are NOT afternoon bolt-in jobs. The short upper bars on the triangulated systems and the amount of adjustment on both upper and lower bars limit their HP level.

My guess is the HP limitations of both are about the same. The next level would be back-halfing the car.

Is there an advantage to the triangulated system or not I didnt get that out of your responce. Cal trac advertises better 60ft times.

So I guess it may be worth the $3995.00 if i was competitive, since i amd a street strip car I cant justify the dollars. thanks for the help i greatly appreciate it

You can be rolling around on the full Cal-Trac setup for less than a grand. It may not be quite as good as the other setup, but sure is a lot cheaper and works VERY well. CHIP

There are a lot of very fast cars on Cal-tracks and the price is reasonable. The bars are $340. For a little better tuning you can get the mono-leaf springs for another $298. And then a set of good adjustable shocks $178pr.

You might want to look into the RMS "Street-Lynx" setup which is about $1795 (same guy that makes the Alter-k-tion front ends). It is also a triangulated 4-bar setup which will require some welding, but is a fairly easy installation. RMS Street-Lynx

Please contact me if you need anything.

Scott

Thanks for all this info guys!!! this is why I love Moparts and having a mopar!!!

Thanks Again

Go with the caltracs and don't look back....plenty of guys in the 9s running them...And you can install them in the driveway with a hand fiull of tools.

can you take a picture I just bought the caltrac set up should be at my house for the weekend. showing the welded straps or gussets

Don't have a good pic at the moment, but will get one for you.

If you had gotten the Cal-Tracs from me, I would have included the straps.

I have seen 3 cars with damaged axle tubes from the spring perch crushing into the tube. These were all 8-3/4 housings and in cars running in the 11's. In one case, the rear end moved enough to allow the tire to hit the wheel lip, cutting the tire severely at the top end of the track.

The extra brace will help prevent that from happening.

I use a piece of 3/16 bar, 1" wide and wrap it from the front of the spring perch, over the axle tube to the back of the perch. Welding it at both ends and stitch welding it to the tube (avoid excessive heat which could warp the tube). This makes the spring perch MUCH stronger.



OOPS !! Hemiroid beat me to it - not a bad drawing (upside down), but I still like to go all the way over the tube.


Also--for the Cal-Tracks to work "right" you want to make sure you have enough front end travel to allow for roll rotation of the car. The magic number according to John Calvert is 5". You can check that by measuring your front wheel lip height at rest, then jack the front of the car up until the wheel start to leave the ground, and re-measure. If you don't have enough travel, lower your torsion bars (evenly). You may need taller front tires to keep your ride height.

Scott

Scot, based on your posts it looks like you already made your mind up on the cal tracs.
The Unlawful system is nothing like the street links. I see a lot of people racing and cruising with the alterkation front ends but havn't seen anybody racing with the rear ends. No offense but it just doen't look like it can take a lot of power. I am no engineer so it just my opinion. The Unlwaful system can take a ton of power where the street links seems to be more for street use.
The cal tracs do work for racing but not so good for street use, you are basically making the front half of your spring a solid link. This can and sometimes does tear parts of the car if a lot of power is applied to a weak or rusty car.
Make sure you have a solid body at the connections for the springs!!!
Like any system, cal tracs are just not as simple as bolting it on. There is going to be other stuff you need to change and upgrade. The Unlawful system is complete when you get it, shocks, springs, bolts hangers, everything you need to put it together. All the little stuff adds up. I needed nothing else for this system.
You can adjust this system to leave flat and maximize traction, or pull a big wheelie if you want to. It is all how you set the instant center and can be changed at the track in minutes, literally!!. Cal tracs can't change the instant center, only stop the axle wrap.
This is very streetable as well!!! My car handles like it's on rails.
This system is not a back half but gives you many of the same advantages. One thing about it is that you can easily go back to stock on a valuable musclecar, you can't do that with a back half.

Again, this is just the opinion of a guy who uses a particular system and likes it. It has improved my car by .20 second in the quarter.
I have my flack jacket on so fire away!!

I do truely understand the pros and cons now. I did stop the order from the airport this morning before I left for Saltillo Mexico. I have a very long winter to think this over. Its a tuff decision, especially when the money tree is bare unlike a few years back. Mr. Irons thanks for the blunt truth I do appreciate it and yes good solid proven part come at a price that i do know for sure.
Currently right now my dart on the average is a 1.43 to 1.45 60 foot at milan. I think that is prety good for super stock springs. I could be wrong. I will be doing some more research soon so please be patient with me.

Kiddart1
AKA Scot Bigelow