Open Differentials - Getting The Most From Your Factory Peg Leg Rear Axle And Where They Work Best

The vast majority of cars that we deal with came from the factory with an open rear diff, and most people consider them to be a lost cause when it comes to high performance use.
There are a few surprising applications in Drag Racing however, where the common open rear was the best choice for getting certain types of cars down the track.
Here's the science of how they can be made work when a Posi, Locker or Spool is either not available or not in your budget.
#classiccar #musclecar #diy #differential #welding
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[@HansensSpeedShop]

I believe most fuelers were using a olds 9.3 rear end

[@UncleTonysGarage]

Last cars to use those rears were the early 1966 Gilmore Flexi Fliers. By mid year Woody switched to the 8.75. Just to add to the trivia, Tony Nancy got the first of his 8.75 cars. The last of the Olds cars was sold by B&L Auto in NYC and became the Brewmaster T/Fer and was driven by Jimmy Messenger. It had a M/T magnesium center section and shortened stock axles.

[@blairleighton3343]

When they would do a feature on a rail in Hot Rod Magazine back in the 60s they almost always mentioned the Olds rear. I had a subscription from about 64 on and I remember when they broke into the 7 second times but I can't remember who did it first. Cheers 🍻

[@muziklvr7776]

Pontiacs used those rear ends through 1964. Great diffs, I have a posi version in my 1959 Pontiac Catalina Safari.

[@donreinke5863]

The Kaiser Brothers a local engine shop, used an Olds rear end behind a 392 Hemi they set up to run on nitro. They still take it up to Bandimere on occasion as well as local car shows.

[@guyfranks4354]

Yes Tony, I would like to see a tech video about welding up spider gears. I enjoy your content and I look forward to your next video.

[@TIMEtoRIDE900]

Absolutely - and elaborate on the idea of tightening up the spider gears for some Posi action, or would that not be good for the street??

[@rcnelson]

Ditto. Dorks like me need all the instruction we can get.

[@simoncarter5951]

Yes. I never knew weather it was ok to try and cover up the ring gear to reduce welding splatter and do it in the diff or strip it down and weld it on the bench then clean and rebuild. It always seemed risky to just whip the rear cover off and start welding if you wanted your diff to last even though I have seen it done a few times.

[@SevenHunnid]

I do food videos while high af on my KZbin channel 💯

[@dennisford2000]

Get on Garage 54 they weld piles of axles and other stuff. Gearhead city

[@23Roadster1]

On a short wheelbase drag car or a high power street rod, if an axle breaks on a posi/spool/ect., all the power goes immediately to the "good" axle and the car can hard turn almost in its own length. An open rear will lose all forward thrust. If the car has a properly designed four link, the right rear can have some pre-load applied, and both tires will plant as they should. This is a safety concern that no-one thinks about. Good topic Tony!

[@mattbauckman9907]

Open diffs are more robust in my opinion, especially in trucks. A little known secret with an open diff: If you are stuck and one wheel is spinning, just slowly apply the e brake and the load will shift to the non spinning wheel. This has worked for me many times.👍

[@gliderp]

I learned something like that in my youth on a Ford 8N. They had separate left & right brakes, as most if not all tractors did.

[@malcombailey8590]

I learned how to steer with the brakes to

[@danjones1897]

Modern traction control systems use the computer to apply the brake to the slipping wheel --just like the guy below talks about using the dual foot brake on a tractor. With the speed the computer does it, you never notice. You just go.

[@Impactjunky]

@@danjones1897 There's a reason nobody uses traction control in drag racing or off-roading. Every traction control system I've ever seen had an extremely delayed reaction time. By the time they cut power and apply brake an experienced driver would have already recovered without lifting as much or even braking at all. I've also seen traction control systems freak out and cut the throttle and apply the brake on a modded totally hooked up car with full traction because it couldn't tell the difference between losing traction and gaining power. All it saw was too much wheel speed too soon. They can also ruin your desired launch or your efforts to get unstuck by cutting power when you want or need max wheel speed.

[@waggitnshaggit6592]

@@Impactjunky Agree off-road or in deep snow.Traction control will get you stuck in a hurry. It just kills momentum.

[@jesseaguirre2961]

UT, you my friend are a true genius, thanks for sharing your knowledge you are a true asset to our community.

[@bangsteellongrangeshooting3413]

The BEST video on this subject ever. You're a wealth of knowledge Tony. :)

[@jasonadams5403]

I’ve had welded rear ends (8.8 fords) in pickups that’s gave ALOT of a use to and they survived, I think it would be a great video to make for your viewers. I’ll be tuning in from frostbackistan 👌

[@cactuscanuck6802]

That's really cool about the earlier fuel rails - I had no idea they ran open diffs! Another awesome historical tech lesson from Professor Anthony 👏

[@altpraize6708]

I had a 71 road runner 440, 4 spd. With open rear differential. I put a traction bar on the passenger side spring and adjusted the snubber so the car was putting weight on it when the car was sitting still. Worked really well at getting both tires to grip

[@bobhill3941]

Very cool, do you still have the car?

[@alanrader3016]

​@Bob Hill I am storing a 71 Roadrunner 440 (3×2 carbs) 4 spd in great shape. Owner wants to sell it.

[@bobhill3941]

@@alanrader3016 Excellent car (with my favourite engine/carb setup) auto or stick? Do you want to buy it?

[@alanrader3016]

@Bob Hill this has original engine and 4 sp manual tyranny. Really a nice car. I am only storing it for a widow lady who wants me to help her sell it.

[@bobhill3941]

@@alanrader3016 That's really nice of you. I feel sad for the widow though this scenario isn't uncommon. Maybe make an offer. I've always had a soft spot for the pistol grip! I bet the husband bought it new, enjoyed it, stored it, and passed on.

[@pauldulworth2768]

Masterclass once more from Uncle Tony. Learned more stuff as always.

[@bobhill3941]

So did I, I love these.

[@jamoshotrod]

My nostalgia drag racing group has some guys that still run open rears in their front engine dragsters

[@MrXerxes415]

I am currently at 50 views of differential rebuilds and was able to learn three new things that the other 50 never mention Tony is the bomb

[@zappa3543]

It's the first time I seen anybody talk about that thanks Tony

[@jesse111487]

Damn uncle Tony I'm getting a 68 charger and your probably the only person I'd let touch it

[@ciatangallaghe2485]

Tony is one those rare guys on KZbin that knows what's he's talking about.

[@imskeptic1]

Hey man, this is stuff that I never knew. I never have heard anyone discuss this kind of information, and I never would have even considered this as a possibility. This is amazing to hear, thanks so much for broadening my base of awareness.

[@rescuedandrestoredgarage]

I think posi is big bragging rights, and it looks way cooler smoking both tires. 😎

[@MackOftwylds]

Damn good stuff, you remind me of the old time racer that taught me to build engines in the early 80s. The only welded spiders I ever saw growing up went south in my buddy's blown 67 Camaro and almost killed him. I honestly thought it was a no-no to weld them based on everything I ever heard. Then, I started running mini-spools in my rock crawlers back in 1998-07ish. They were not very forgiving and it donned on me that spools were basically the same as a welded diff. Personal preference now is to run open and deal with the wheel lift. But, I don't drag race anymore... I will run welded spiders in a burnout mini-truck I'm planning on building. Makes for better smoke having two wheels dong it.

[@JDWard-Jeepster]

Yes Uncle Tony I did get something out of that. Thank you for making me think in terms of torques effect on wanting to load one side while unloading the other. Adding one leaf spring to the passengers rear corner is a great Idea and easy to do. Using a pinion snubber is also a great idea. You can tell the Chrysler engineers had a good understanding of the suspension dynamics on this. 😊

[@donaldcope4982]

Even though we are the same age......I'm gunna call you Uncle Tony.....It just fits!

[@treninness7112]

Thanks Tony! Yes! Please show us how you weld em up!

[@darlenegeorgeboyd8493]

We have an 88 4X4 Blazer that is wheeled a lot. It has an electrically activated locker in the rear axle. To be able to select open or locked is a big plus. The front axle has a lunch box locker. The only thing wrong with that is the steering gets harder, especially the tighter you turn. An E-locker in the front also would be perfect. Not in the budget though since we have three other trucks that eat money.

[@aboutsoundandvision]

Thanks for the info Tony. My dad has a 1970 340 Dart Swinger and has an open rear differential. Lots of great info to be had here regarding the racing history and performance of these parts!

[@tonyv7660]

Drag racing is not my forte, but you taught me a lot of things about diffs in reference to drag racing I didn't know. Thanks T.

[@Hogiewan1]

That really brings back memories. I did a Lincoln locker for a friend back when we were 20. That was 1990. I told him not to call when he turned a corner too fast. He did about 3 months later. Thanks Tony

[@TheWhitetailrancher]

When i was racing small oval 4 cylinder stock cars I just welded my spider gears. Worked Just GREAT and talk about cheap!

[@UnityMotorSportsGarage]

First on Race Day!!!

[@americanpatrol4603]

Yeah, but the marquee matchups come later in the program.

[@Ecosse57]

i've never used them but lunchbox lockers i guess are an intermediate between mini spools and regular limited slip cost-wise. interesting take on open diffs i never knew.

[@TheBrokenLife]

I have a lunchbox in one of my cars. It was roughly the same price as an LSD, but it's an actual locker. The real cost savings you're harvesting with a lunchbox is in the complete lack of setup required to install one. Just roll the spider gears out and roll the lunchbox in. No bearings, shims, crush sleeves, etc. It works well enough. Lots of clicks and clacks like the big-boy lockers without the big boy price and durability. Nothing I will ever own is likely to make enough power to break a factory carrier, so... should be fine. 🤞

[@brandonford8092]

Wtf is a lunchbox locker?

[@TheBrokenLife]

@@brandonford8092 Powertrax Lock-Right (what I have) is an example. The locker assembly goes inside a factory open carrier and replaces the side gears with 2 pairs of drive dogs. The drive dogs apply load from the carrier to the axles via the vertical cross pin until there's enough of a speed difference from either wheel for one pair of dogs to jump past each other. They function like a regular locker, but for a fraction of the price of a locker. They're about the same price as entry level LSD units, but superior in function if you _really_ want 2 wheels driven as much as possible. I've heard the "lunchbox" nickname comes from either the idea that the locker is packed inside of the carrier, like a lunchbox, or that the lockers are so small they can fit inside a lunchbox. No clue if either is accurate, but that's the slang term for that style of locker.

[@immikeurnot]

Lunchbox lockers, like all lockers, are a whole other level from clutch based stuff like positrac, but much more streetable than stuff like spools (and a lot of times, the clutch based stuff.)

[@TIMEtoRIDE900]

@@immikeurnot Is that what's in an '83 Camaro Z-28? I's open until it locks, then it stays locked sometimes until you can make a slight turn, then it's open again. You can't run a mini-spare ! Shredded the crap out of a tire once, needing to get home.

[@mdcuddy3286]

I remember the first set of spiders I welded up. Back in 1969, several of the home towners were doing much the same things as the Mission Impossible 318 and welding the rear spiders. These were street-able(?) and you could tell when one came to street race at the local cruise-ins. The rears would 'chirp' around a corner (hopefully you didn't break and axle!). One fellow had a 1964 Ford Fairlane 'Thunderbolt' clone with 260 V8 badges but had trailered the real Thunderbolt that was identical, even to the 260 badges! It sure made for many a story. Keep bringing these tidbits!!!!

[@thisisyourcaptainspeaking2259]

The one wheel peel!

[@donaldhill2775]

Thanks Tony ! You’ve made me feel better about my old mustang and it’s open diff 😂👍

[@bcbloc02]

In tractor pulling we actually needle the spider gears and side gears to reduce friction so the side with less traction can spin more. It is the only way to get a high powered machine to go straight on an uneven dirt surface because traction varies so much. If you lock the wheels together you can be pretty confident it’s going to shoot of in any direction but straight!!

[@lb9gta307]

Tractors (and 2wd trucks) often have steering brakes too. From what I've seen the 4wd trucks get locked diffs.

[@WiSeNhEiMeR-1369]

HOWdy U-T-G, ... Fascinating OPEN Rear-End FACTS ! ... I was a USPS / Letter-Carrier for a while in my early life & we drove 2WD JEEP DJ-5 vehicles all equipped with Limited-Slip Differentials ( in the REAR ENDS ) ... and they were fine Fine Fine Spring, Summer, & FALL ... but in the Winter with SNOW & ICE on a "CROWNED" Street or HIGHWAY ... the "LOCKER REAR ENDS = sucked pond water !!! stopping at each & every mailbox = these DJ-5 JEEPS would slide to the CURB ass-end 1st ... Thanks COOP the WiSeNhEiMeR from Richmond, INDIANA ...

[@jamesmarze9850]

Please show us how to weld spider gears, your knowledge and experience rocks!!!

[@windycityben4850]

I love Friday morning history lessons 🙌🙌

[@blitzerman8]

Contrary to welding spider gears, I'd love to see more stuff about using open rears and what they can do. A tech video on tightening up the slop to get a better bite and the kind of suspension work to get an even bite would be great. I know suspension can be less exciting than engine tech though.

[@TIMEtoRIDE900]

I put spring spacers in the right rear of Mustangs and Firebirds to help get rid of the One Wheel Peel.

[@blitzerman8]

@@TIMEtoRIDE900 guess I'll need to do that for my little 4 link Toyota.

[@AtZero138]

Differential Talk with our Uncle Tony... Shut up for a Minute and listen.. Even you know it all's ... Have a great weekend folks or whatever version of "that" is to you . Keep on wrenching folk's @∅

[@alsguitars5127]

Thanks for that content. I’ve never heard that explained the way you did. Might be my favorite sit down you’ve done. I saw a guy with an auto parts store “helper” spring on the right side only once at a track a million years ago. Thought he was crazy but now I think I understand what he was doing. Thanks for the Video.

[@toiletpaper5770]

After watching this I put a chain on the right rear tire (I have a set) of my Chevy 1 ton to plow snow. That thing was unstoppable!!! Thinking I might put the other one on the left front…

[@donaldhalls2189]

Most times we welded diffs for speedway the spider gears would let go so all tip's would be appreciated thanks for sharing, all the best to yous and your loved ones

[@dadalebreton184]

Our 68 charger was built to drag and the guy had put 8 springs on right side and 5 on left. He never broke any rear window that way. It was long ago and the 3.91 gears were not weld but à lot of folks did it. They has the yellow drag antispin bars on the rear end that looked funny. I was 12. Lol Another important message and I learned again from how to proper weld spider gears. Didnt know about heating prior to weld. Actualy, dint even realy know how to weld it. Thanks again to all the community.

[@pirategreg8076]

Thanks Tony!! Great Video!!

[@chilee6994]

I really like listening to your knowledge your old school knowledge.. It valuable

[@user-kf6fl5if4k]

Great explanation man. Very informative and to the point. Thanks

[@mikemccarthy6127]

Very interesting topic. So for a typical a suspended rear end drivetrain, the axle housing is allowed to twist, and the torque reaction of the driveshaft will try to spin the rear end in the opposite direction and unload one wheel (passenger side). The rear springs counteract the reaction torque torque. Is that also what caused rear steer? So on a top fuel dragster, the engine/ slipper clutch/ bellhousing was bolted to the differential housing so it was like a rigid member? Makes sense it wouldn't try to lift the one tire from driveline torque. But it still seems like when the engine jumped up to speed from idle at the green light the inertia of the crank would still momentarily plant one tire from the torque reaction. Once the car was under power and the revs level out a bit both tires would get equal pressure. Didn't Don Garlits try to run a transverse mounted rear engine dragster in his later years to counteract that? Doesn't seem like that would matter much for anything except for a dragster (and maybe not even for them). Maybe I'm overthinking it.

[@jsmesstewart2137]

I love the way you explain everything

[@ldnwholesale8552]

Having welded diffs for 50+ years you have to know what you are doing. Or they will break and break big time. That Mopar diff you have there needs to be welded both sides and use a plate either side. Or as I saw very recently the weld will break and the spiders will try to turn and in turn explode the entire diff. When welding a diff you need to A shim the spiders so you do notmend up with the,gears cocked. B ideally use an axle to protect the splines. Plus NEVER weld a diff that that is complete. You must remove the crown wheel carrier and then remove the crown wheel. Then MIG it together, not too hot. And continue to blow it out with air to keep it cool. Do as above and itnshould be better than many spools though heavier. Until recently [cars were sold] I have still used diffs done like this for 40+ years. Worn out gear sets etc but the ;'spool' has not failed. Do not bother tryingnmto weld BW diffs, 9" diffs etc as the design does not allow it.And never weld the gears to the cast iron as the materials are too disimilar and the iron will break

[@rickynelson3222]

I had a 440 66 charger with 355 open 8 3/4 and with the weight transfer to the back corner was great . I had a 391 gear but with my 4 speed 1st gear was useless

[@Mr.Avuncular]

The barracuda1970 model blew the side gears💥💥💥 after i transplanted all the running gear outa of a 70 Cuda 383/727....after wards i put the 83/4 355 gears in 🤣👍

[@raybrensike42]

I was stuck in the snow with my van last week. Good thing I had tire chains, cable chains actually. What I noticed as always, the right rear is the one that looses traction, all the time, as long as I'm on the same slippery mess with both wheels. One of the cable chains came off, but I didn't want to stop because I thought I would get stuck and have to put it on again, so I kept it going. Cable chain was on the right rear. I made it. Don't know why it's always the right rear. ('91 Dodge van, 8 1/4) Well, maybe it is torque reaction, because even in those situations there is a little bit of torque, even if you only apply the accelerator minimally. Maybe that's all there is to it.

[@dbc105]

Tony, I would like to see how you shim behind the spiders to tighen them up a little. I just as soon keep an open rear, I don't race and it is some much easier on tire wear but it would be nice to get that little bit when needed. I always thought an electric locker would be nice but the few I've seen didn't fit what I have and are too costly. Thanks, good vid, DC.

[@brokentoolgarage8609]

Nice! Thanks for reminding me that I need to rebuild the 8.8 in my 89 Mustang...

[@netgnostic1627]

I almost ordered a Torsen diff for my 8¾ once, but a friend suddenly let me have his Sure-Grip when he bought a Dana 60. I still want to try a Torsen someday.

[@dirtdroptmedia]

Loving your content and learning good stuff! Thank you! I have an old mercury, not a Mopar, but maybe some day. 😄

[@tomquinn607]

Yeah. I'd like to see a video on welding spider gears.

[@Joireeon]

Thanks tony interesting stuff

[@hemihead68]

Such a great great wealth of knowledge 👍

[@anglia427]

I Don't weld them in the carrier just weld 2 or 3 theeth on oppisite sides of each side gear and grind the edges smooth. Install them same way they came apart. Welding a carrier with C clips the other way you will never be able to take it apart again.

[@anglia427]

Forgot to mention weld 1 and 2 teeth on opposite sides of spider pinions also so they all mesh and can be installed that way. similar to a mini locker and if you ever want to change back to open diff you can remove them and put spider gears back in

[@w3r3cow]

If you have a coil spring car you can put a foot ball in the right rear spring and inflate it as a tuning mechanism instead of an air shock... That's another old timers trick.. 😉

[@alanhoggard4554]

Yes, I would love to see you welding the gears.

[@lawrenceessard4086]

Yes on welding spider gears.

[@karlsracing8422]

Whoa forabodiesonly is going to go nuts with this one! 😆 🤣

[@bw3506]

I welded up a Dana 60 rear in my mud truck and used it for a few races. I was backing it up one night to load on the trailer for an early start the next day and I feel and hear this clunk. I go ahead and load then I see oil running out on the trailer. Well a chunk of spider broke out and wedged under the ring gear and popped a hole in the case. I decided the Lincoln locker wasn't gonna cut it so I found a spool and patched the pumpkin. Sure hated to miss that race though.

[@georgebonney90]

Thank you Sir👍

[@jonmoore8995]

Master Tech of our day.

[@exploranator]

The easiest way to use an open diff without traction problems in drag racing is to use a larger-diameter tire on the right side of the axle. One old-time drag race used to do that and do these gorgeous two-wheel burnouts that his competitors could not figure out and demanded tech inspection to see if he had a posi rearend. You can do this, too.

[@confucioussay5010]

I used a " lunchbox" locker in a V8 swapped light weight sports car. Cost& ease of installation were my initial reasons. I have a few reasons why I changed it. First ,high-speed cornering. On the gas pedal, the front would 'push'. Off the gas so much, and it had an uneasy transition . Second , the handful of times I tried to gas it hard, when the locker was unlocked, BANG! CLANG!! it would skip a few teeth and sound like the rear exploded. I also couldn't push the little car by myself, like the brakes were on. That said,going in a straight line, it worked fine.

[@two_number_nines]

A pipe going from the transmission casing to the differential casing is the cure chevrolet uses on some corvettes. It is a good way to have your suspension act symmetrical during normal driving and still launch good on the drag strip.

[@jasonriede6056]

Got to love a Lincoln locker

[@timmchale6880]

Yes definitely show us

[@rdgabriel7398]

Yes, I would like to see a tech video about welding up spider gears.

[@immikeurnot]

I've only owned one open rear diff, which was sadly in a sports car. When I lived in snow land, I had a Bronco with "L" diffs front and rear. It was terrifying in 4wd above about 10 mph in snow. A "posi" in a daily can absolutely not be too good, forget the power losses. Rain. You turn onto a main road in traffic when it's wet, accelerating moderately hard, and suddenly the back of the car is jealous of the front.

[@lb9gta307]

There's different types of limited slip diffs that were sold under "Posi-Traction" and even more if you were just using that as a universal term. They don't all behave the same. Some limited slip diffs are even adjustable.

[@howlinhog]

"Peg leg". LOL. I'm stealin it. I have a display in my transmission shop of, "NOT COVERED UNDER WARRANTY". It's a display of differentials where the cross pin walking out served as a sledgehammer through the case material (front wheel drive) surrounding the differential. People don't realize that when they're stuck and they've got it floored and it's slowly creeping forward while one wheel is stationary and the other is gaining on Shirley Muldowney (it's working right?) their cross pin is welding itself into the diff housing and the little roll pin holding it into place can't possibly survive. Later, and you'd think this would happen immediately, the cross pin starts walking out and demolishes everything in its path. The End.

[@firefly5981]

Awesome U.T.

[@Bigfrankie078]

Yes!!

[@markwagoner2853]

Yes

[@diesel1586]

So I busted out laughing at “I always felt like a dirtbag welding spider gears”, woke the dog up… This was just the video I needed to have with my Saturday morning coffee

[@kurtmccarthy6733]

You gotta show your welding spider gears Tony.!

[@davidmusselwhite2521]

Yes let's see the welding

[@kensbackshop6399]

Yes welding the spider gears

[@robv.o.1777]

I kept shredding carriers on 7.25" on 72 gold duster with a 318, wide ratio 904 with a 4.2 lever. Had 2.76 gear, and i swapped a set of 3.23.... kept blowing up, until i welded it up with alloy rods, and put a 1/4" plate over both sides. Got too good at popping pinion out and cutting a good pattern. Very surprised at how strong a stock 8 1/4-8 3/8" are.. put one in my 69 valiant with 3.90s and wide ratio 904, same 4.2 lever and a slant 6 torque converter. 6 leafs left, 7 right. 6 cyl torsion bars..urethane bushings... hooks up very nice. But... i need to pop the diff cover to re-adjust the left carrier brg preload, and replace the clip, as it keeps twisting it off😂.

[@jerrybaker6227]

Please show us how to weld spider gears tony

[@Romanwilhite13]

Uncle TONY man I need some insight 1980 dodge d150 225 slant 3 speed auto trans I’m swapping over the an offy intake and some Clifford research long tubes what is your recommendation for carb size

[@hamptonharris5257]

yes a video on welding spider gears please💯💯💯 watched people do but never done it myself ..would love the wisdom of uncle Tony when it comes to that

[@clutchkicker392ison5]

Lol, sept us Ozzie's in busted arse valiants could look over at shop reflections and it was the 'good'side (mine) smokin up. ! Cheers

[@Rusty_Spiggle-Smith]

Film the welding, show me how to go fast with my hobo freight flux core Uncle 🏎️💨

[@michaeladamo1188]

The first time I heard about spider gears was from you i thought it was when you were building bottle rocket you had a video of welding a set of gears

[@tylerroe5175]

Would welding the spiders throw the assembly out of balance enough to eat up the differential bearings? I’d imagine it’s definitely harder on the bearings but I don’t know if it’s significant enough to cause noticeable bearing damage. But that assembly is rotating incredibly fast so even a small imbalance in the assembly would be exaggerated at higher rotational speeds

[@arlanbates3496]

Can I weld the spider gear on the front axle Dana 44? 4x4

[@gkhanjriii91-04]

Old school 🤙🏼

[@bradhoffman77]

have seen some open rears on street cars with a single traction bar...seemed to work

[@MrMcbuck48]

yes.

[@hondamaticgarage9369]

ok, so i dont need a sure grip in my cuda. my 489 8 an 3/4 will do fine. thex tony.

[@jamesunderdal8976]

I liked the old front engine rails the rear engine dragster was cool but those dudes that ran the old rails looking around that massive blown motor setting between those tires with a helmet and gas mask on now those fuckers was crazy lol but that's about as badass as it gets. I love your videos uncle tony man I have and still learn alot from watching them.

[@ettoredivirgilius8789]

I’d like to see a 8 1/4 build and how you would ensure ring and pinion mesh / play is correct

[@blairlindsay5791]

and your experience with the Borg Warner , cone type , suregrip* ?? shaving off 0.040” of cone . make shims from tin or what have you ?

[@DaveTomini]

yes i would like to see how to weld spider gears

[@walterkz]

yes please!! as would like to see the technique used

[@brassmonkey7566]

Friend of mine welded g-8 bolts in all 4 coners of the spider gears seamed to work ok

[@BackyardClunkers77]

Mopar Tony... don't forget to educate folks about how & why mopar cars had an asymmetrical pinion location on the differentials, & the Pinion Stuffer... lol- that little bracket over the pinion's u joint with a solid chunk of rubber & how flat footing the throttle planted that Pinion Stuffer up against the bottom of the rear seat's floor board & allowed torque not to twist the diff's housing... plus it makes mopars unique & not having to need traction bars. 🤟🏼😆🤟🏼

[@BackyardClunkers77]

Mopars had their pinion locations offset to the passenger for two main reasons: 1- more of a straight shot for the drive shaft & engine/ trans, & 2- "giving the driver more leg room" if ya know- y'all know.. ✌🏼.. Mopar's floor boards had about 3inches of extra width along the left front & left rear floor pan area between the inner rocker panels & transmission tunnel/ driveshaft tunnel then compared to the right sides.