Mini tub and cal trac suspension for A body Mopar! Info and how to 

* drum to drum is exactly 51” mounting surface to mounting surface.

Good day. Found you only a week ago. SO pls excuse the late question.All hail to mother Mopar! I’m a B body guy though, ‘65 Bely II. How much street time does she really see? Is it a choppy ride? Or kinda without anyone in the back seat. As I’m thinking of going with the split mono leaf set up like yours. Cheers fellow Canuck! Great vids . Keep it up

What a well constructed car!

Love the video and can't wait to start work on my 68, it looks like a bit of a basket but it's solid at least

Love your video ! everthing well explained

How much space do you lose from the leaf spring stick out toward the brake drum after moving the springs under the frame?

Just came across your channel and apparently I’m about to watch every video you’ve posted because why not.

Who's U Bolts did you use?

Ooooo 8 3/4 a body rears are getting harder to find. You can always cut down a b body 8 3/4 as well. Lol then you have something else to store.. And then since you have an extra rear end now, you might as well find another car to put it under.. 🤔 Excellent

Taps the tire and the car shifts....😬

Awesome video! Great camerawork too. Everything you talk about is 100% in frame and well visible. I wish more videos were this well done! Thanks!

Love your video! Do you have older videos when you did the tub cutting and welding? Also, I had removed my whole rear end at one point during putting the super stock springs. I had a set of Centerline Prostars and 295 with 4.5" BS rubber so i placed them in the wheelwells and took ample measurements for future reference. Do you think going with a 3.5" BS would complicate things, for example, get wheels on and off or any other clearence issues on with the springs/rear end/brakes? I also like the look of the super deep dished wheels! Thanks again!!

Moving the front and rear hanger back is an incredibly bad idea. First it moves the rear hanger back to an interference point with the frame. The next piece of bad news is that you just moved your axle backwards and changed your weight distribution reward as well which negatively affect traction. The mopar SS springs for an A body moves the spring center pin forward one inch. This does two things. It moves weight distribution FORWARD increasing traction. Second it stiffens the front portion of the spring reducing spring wrap. Cal tracs are expensive and only pick up a tenth or two. Mopar Super stock springs with long shocks and an adj pinion snubber is still the best setup short of a four link, etc.

The Mopar spring re kit, unless they updated it is just a sheet metal box. The best relocation kit it the US Car Tool Kit for spring mounts. A section to split the wheel well and well in a prefabbed spacer is available. Torque boxes are available as used by hemi cars. Contoured frame connectors that fit flush to floorboard are available. A driveshaft loop that bolts to the trans cross member is available. Super sorted out package. The best kit available without exception. US Car Tool is the ONLY way to go.

👍👍Great video! A lot of informative information there and you did a great job explaining it too. Nice lookin' shinny paint on the read end. Is that metallic? I look forward to seeing your future videos.😎

My tires are really wide I'm not tubbed so they stick out about 3 in on each side the guy I bought the car off of says they are Centerline 10 inch rims but they look bigger than that I think they might be 12 inch rims but I can't find any stamping or anyting so I do not know if I need to order Mickey Thompson Sportsman Pros 28x10.5x15 or 28x12.5x15 n and the worn-out Mickey Thompson's that are on there now only stamp I can find is N50-15.. but I got to order the right ones I can't spend $600 just to have the wrong tires ship to me that have to pay to send them back and wait for new ones to come how do I figure this out thank you.. or maybe it is the 10 inch rim and it just has the 12.5 Tire on it I'm confused

If you want more room for a taller tire DO NOT move the axle back. Move the front quarter lip forward. Or run a shorter tire and gear accordingly. The same mod can be used on the front fender. Move fender lip forward to run a taller front tire. If you are running hooker fender well headers it don't stinking matter. You are limited in tire diameter by the header tubes in the fender well anyway.

Mopar

I love this car

Good info can I ask around what it cost for the spring relocation and mini tub job?

Thanks for posting this. I'm considering doing the same thing on my 68 Charger, it's a bracket car so this info is VERY helpful. Keep up the great work. Cheers !

Beautiful car!! I used the spring relocation on my 68 Dart, but didnt minitub. Had some steel 15x10 wheels altered to maximize fit. Used B-body springs to move axle back, but it moved it a bit further back, had to bend the tank flange for clearance. Added a couple leafs from the originals for homebrew SS springs. Never quite finished the car, so it still had the 7 1/4 axle, and amazingly it survived years of daily driving and weekend track use behind my mild 440!!!

That's some really nice tub fabrication work. Can you tell us who did it, and a ballpark of the costs involved?

I have a 68 GTS, I want the deep dish Cragars and larger tires in back but I don’t want to get into shortening the dif, so unless I’m nuts I simply have to raise the back enough to clear the wheel well, correct ? I’m figuring to go with heavier duty springs since these have to come out anyway to change the bushings and lastly how do I know what shocks to go with ?

What is the measurement center pin to center pin

the N50 tires... how it behaves in the curves... I have a race in the tail of the dragon, it is a well-known mountain road

Which size of the mono split leafs did you use? 20”?

Excellent video Joey. Only thing I don't see is the Diff brace. Your car is gorgeous and done right.

What size tires run for the street?

Nice video as usual and who says you can't teach a old dog (me) new tricks!

Sweet Mopar!!!

How wide is your rear-end? Backplate to plate?

Can you still go back 3/4 " with a Dana 60?

What is your reason for tubbing , recolating springs and Cal-Traks ? Are you running 9's ? How ex[pensive is this modification ? why are the ABCD stock racers running in the 9-10 sec times with 9" tires without moving springs or mini-tubs . Waste of time and money , IMO

Sweet!!!!👍

Where in Canada do you live?.............Great show. I Got a 69 Barracuda.

Do you think it is possible to fit a 26” tire on a 65 barracuda with a ladder bar coil over situation without having to cut the rear frame out?

great video,as always, thank you for taking your time and posting great videos, im currently working on my 71 dusters rear end, , i have been running green axle bearings, and one went bad, felt like parking brake was on when i tryed to drive it, my question is, what bearings are in your axles,, thanks

Well executed video gives a novice a great understanding of what's involved to play with the bigger boys.. Please continue on and look forward to seeing you this spring

Great info. Back in 1981 when I had my 69 Swinger I made my own mini tubs and spring relocation. I had a 8-3/4 with 4.56 posi. I ran L60/15 tires on stock 15” rallye rims. Jack Williams re-drilled my axels for the big bolt pattern. I also swapped out the K member (mine was worn out) with a K member from a 1974 dart big bolt disc brakes and some 6 cylinder torsion bars. No internet back then, everything was from reading car magazines.

You always make everything seem so Easy and matter of fact..👍

Great information, always wanted know more about moving the leaf springs inward. Thanks 😊

You nailed it when u said WHEN U KNOW HOW YOU WANT YOUR SET UP TO LOOK or in so many words ! Lol. Love the car and the channel ! Great video and well explained ! Take care

How are those tires?

Great suspension tips, excellent tubbing job, like the T/A style exhaust system to solve the clearance issues.

Definitely a trip down memory lane. Enjoying watching the progress. Cool solution for the exhaust. And yes...I had a dang pinion snubber. Hadn't gotten to the rear suspention. Hey, is there a weight saving going to rear disks?

Your Dart is Wicked! Fast and Gorgeous! Love it. I Run the Coker N50s on my 68 Satellite. We Mini tubbed and relocated the springs on my Coronet drag car.. Narrowed the Dana 60 with 4.10s.

Great informative video, Joe! And definitely a very nice setup! Absolutely beautiful car!

My first Car was a 1968 Dart. Miss that thing!

Another great video! I like how you explain what and why.... Beautiful car!

Tooth Jerker runs Assasin bars, not Cal tracs. They are the same design but the Assasin bars and hardware and heavier gauge for cars with extreme power levels.

Hi from Quebec! You got a nice SB dart. Also my 72 dart is mini tub. With oem tub 3 " wide. My front springs hanger is flush with the exterior. frame rail. Got 48" 8.75 an 34" 7/8 spring perch. I got myself a Wheelrite by percy before buying wheel I run 15 by 10 with 5.5 back space on 325 and 295 15 x 8 4" bc with 275 street And 15 x 8" 4.5 bc with 255 for drag use. Also got rear stock tailpipes reworked ! Keep doing video!!

Great Video! Looking to do same type of setup on my 1969 Dart GTS only thing what is ball park on the cost of the rear end setup? I will tackle redoing front end this year but most of this in the rear I will have to pay to have done.

Had my Cal tracks on for 10 years set spacing with a nickel locked it down and knocked it out with hammer and screwdriver. 60 ft is consistent 1.51 very Happy,next is a higher stall Hughes. I can send them it back after dyno time .

Great video, I was curious about the mini tub. Sounds like you had a shop do it, I thought you might have welded it yourself. Did you avoid it because of alignment issues with welding in the cal trac? I would think you want that squared up real good

Nice clean setup. When moving the front CalTrac pivot point 3/4” back did you move the rear hanger the same distance?

How long are your shackles? I have the same set up with 325/50r15 tires... Your rear looks higher then mine...I want mine up a little.

Not sure on how much hp you have or if you have a trans brake in your car but you should consider boxing and gusseting your spring perches . I’ve destroyed 8-3/4 housings in my duster . The perches saddle and eventually will squash the the axle tube . I run a dana 60 now but I still boxed in the perches so they wouldn’t saddle .

Getting ready to mini tub and inboard springs on my 68 dart. Love the idea of moving back diff 3/4. Was thinking about going with an 11 or 12 inch rim. Any thoughts?

Just discovered your channel Joe. Watched a few videos, love the car, love your content and knowledge you share. New subscriber!! Cheers from Motown.

Thanks for the ride!

How much and does it come with everything? Springs shocks ladder bars?

Great info and explanation of things. Yeah, I wish you were my neighbor. 😆👍

Is that a stock shifter or did you adapt something to work? I've been looking at adapting a factory slap stick into my stock shifter.

how streetable do you find the caltracs mono split leafs n caltracs shocks ?

Greetings from frigid Manitoba,enjoy your posts

I assume you went with "green" axle bearings?

I needed this vid. Thanks. Got a 67 GTS with SS shocks, springs, 8.75 narrowed 4” 4.10, not mini tubbed but the spot weld flange is rolled. Custom spring relocation inboard 4”. Gonna set up my exhaust like yours. Also was thinking of going caltracs. Now I am after watching this vid. I was almost going to drop the coin on new ss leaf springs very soon but now im gonna go with caltracs. You should do the brace on your diff. I got it and I think its worth the $ and trouble. Beautiful car my friend.

very good...but before this set up ever came out....and if your on a budget....2 aluminum angle shims..for the leafs... a air shock for passenger side..a pinion snubber cut to a 1/2 clearance to interior floor...remove all claps on rear half of the leaf springs...and she'll hook...lows 11s all day in my 69 swinger...MH street slicks...and wasnt so bad of a ride on the street

How are those Calvert rear shocks on street? I was thinking of using bilstein shocks and changing out the original springs to Calvert mono leaf later. It’ll be a street driven car. Adding 17 inch wheels. What shock do you use on the front ?

Another great video! Out of curiosity what was the total width of your narrowed 8-3/4 from drum to drum (wheel mounting surface)? And when you mentioned the gap between the wheel lip and drum surface and how it affects your wheel swap at the track you suggested narrowing the rear a little bit more. How much more space between the backing plate and the springs is available? Keep the great videos coming! I enjoy them very much. Lastly - gorgeous car!

Great video I'm extremely happy there's actually a Mopar guy out here you are a rare breed lol

Thanks for the video, My question would be .Does this CalTracs Leafspring mono leaf raise the car up? and how much? Also does it make a difference when you used the relocated inboard set up?.also you are using stock factory Tank yet? what electric pump do you use? and do you use a factory style pickup with 3/8 lines and a 3/8 line all the way forward? although i may have missed you pointing that out before

Thanks man, I got a "B" body (a little different as u know) and it'll be a while - if l ever do get to a "Chop" and wheel tub - but appreciate the walk through just the same. I'm a subscriber and enjoy your channel. Thanks for taking the time to share this.

Great video, thank you!

Great vid again 👍 Dusters, Demons and Valiants have a larger wheel opening so no problems swapping slicks at the track with them 😁

Awesome info , Thanks

Great quality vid bro!!

nice!

Good job buddy.

Well executed!

Great info! Gonna put a caltrac system on my 72 duster and needed more info on it

How does the car handle around corners? I've been warned that narrowing the rear-end can really negatively impact handling.