We Get Marsha's FIRST BURNOUT Thanks to This Eaton TrueTrac & 3.23 Upgrade

Since bringing Project Marsha - our 1970 Plymouth Fury III convertible - home and getting her running, we've wanted to get her to spin the tires. Sadly, the worn out 318 and wounded 904 automatic just didn't have what it took to do it. Plus, our super freeway-flying 2.76-geared open differential would never let us! That's why we stepped up to a beefy Eaton TrueTrac and some (slightly) stiffer 3.23 gears. SPOILER ALERT: she finally spins 'em but some of you might call it cheating.
Eaton TrueTrac Differential
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[@ayebee1207]

I worked in salvage in the late 80's. It was sad to see lots of BB Furys in the yard. Any SBC 350 builder was gone in a day or two. Mopar 383 just sat cricket quiet.

[@theodoredugranrut8201]

I know what you mean I worked at a scrap yard in the 80s did alot of picking, still saw too much potential go to the port.

[@moparconnection]

What’s more depressing is what scrap yards are filled with now (all Toyotas and SUVs). There’s nothing cool in them anymore

[@dbc105]

I meet Jim at your tent at MOParty, nice guy and good to talk to. Good vid, nice seeing the build step by step. Thanks, DC.

[@moparconnection]

Yeah, this was the first year for Jim Hannan at the MCM tent. He'll be back this year although we're not sure if his Belvedere will make it (we've got plans for that coming up).

[@dbc105]

@@moparconnection Sounds good see you there. I have an idea for you if I'm not missing it, a list off MOPAR shows and swap meets throughout the year. I try to attend the ones that are not too far to drive but it is hard to go to a single place to see what is upcoming. Just an idea, you may already considered, I just think it might be handy. I for one would use it. Thanks again Kevin.

[@moparconnection]

That's a great idea, but heaven knows that we'll miss some regional event. Thankfully, the list can always grow. We'll look into it for a future article on the magazine.

[@dbc105]

@@moparconnection Thanks, looking forward to seeing it.

[@danielnordstrand8977]

Great job! I've been reading a lot of your magazine articles, and just discovered this channel. Thank you so much for all the content! Did put a TrueTrac (4,89 case) in my 70 road runner last year, and i'm very pleased with it!

[@moparconnection]

That’s awesome! And thanks for subscribing to the magazine!

[@henrybourdon6712]

Hi Kevin, I am that guy that misjudged you a while back. Glad to see you put another classic back on the road. Even convertible tanks need to be saved.

[@moparconnection]

It’s been a lot of fun! We don’t have the budget to buy up a fleet of classics like some guys so we’re choosing to dive deep on these cars instead!

[@theodoredugranrut8201]

Marsha, Marsha, Marsha, sure let's follow Marsha we like to see projects come together AND we like Mopars. Central California watching

[@moparconnection]

LOL that’s awesome- thank you

[@michaelbush-ml9dk]

Nice vid, Kevin, I did my student driving in a 69 Alpine White Fury II 4 door. Wilkins will attest.

[@moparconnection]

Very cool!

[@davej3487]

In a 1965 Barracuda with a very warm 78 Teen I had a 7 1/4 LBP out of a 74 Dart Swinger It had an open 2.76 gears. Took a 8.25 out of a Aspin, 2.94 gears open. Not much improvement. When the 8.25 started leaking at the pinion I had to put the 7 1/4 back in to get to work everyday. I took the 8.25 and pulled it all down, new seals and bearings but put a 3.55 Suregrip out of a 8 3/8's Dodge van. The 8.25 and 8 3/8 are the same carrier and ring gear size. Everyone on a Mopar forum said NO but we did a lot of measuring and it fit. Using the brake backing plates and drums from the 7 1/4 I was able to put 10X2.5 drums on the 8.25, better than the 10X1.75's Going from 2.76 open to 3.55 Suregrip was VERY big improvement.

[@moparconnection]

Heck yeah it was!

[@davidbrown4180]

Love to do that with our 68 300

[@moparconnection]

LOL I still feel like we cheated - a real one is coming soon enough.

[@hayneshvac2]

Haven't seen a Gen III Hemi swap done on a "C" body yet...would be interesting.

[@moparconnection]

Yeah it would! We’re going to keep this one old school for now but that’s a rad idea for a future project

[@roxannemanzone9351]

Excellent video! Enjoyed it.

[@moparconnection]

Glad you enjoyed it!

[@skip7243]

I want to see more Marsha vids, but more than that I want Marsha!!

[@moparconnection]

LOL! I won’t sell her until she’s done and dialed with a big block - I really want a ‘69-‘71 Chrysler 300 convertible!

[@StevenYoung-dm6wz]

Can't believe they didn't even paint the housing. Holy moly.

[@moparconnection]

Who? The factory or me? Yeah, Chrysler left a LOT in natural. I’m gonna paint the whole rear when we upgrade the suspension in a couple of months.

[@cuengineer10gotigers87]

Great video! Thanks for all of the Mopar content you put together!

[@moparconnection]

Glad you like them! And thanks for sharing!

[@shippyshank_loves_carsandsound]

Hey man I was the kid that was fishing and asked you what your channel was

[@moparconnection]

That’s awesome! Glad you got to see this old boat finally roast ‘em.

[@brandoncarter9107]

Seems like that Mark guy has done a few of those.

[@moparconnection]

When he's made his own tools? Heck yeah.

[@trevnerdhubbabubba6230]

Love your vids. Its refreshing to see good vids about Mopar stuff other than UTG. I have a 1941 plymouth, and am building a beastly street/ strip car. I need a transmission, but don't have 5K for a tremec setup. Any suggestions

[@moparconnection]

And you’re needing to go manual? Well those 5-speed Tremecs are in a LOT of Mustangs, which get wrecked often. A new bell housing and throw-out bearing is cheap if you can fish out a gearbox from a totaled GT.

[@bartley440]

Man I love these video's, you see all the latest and greatest parts and tools!! Can you tell me where you got the custom trunk lid strap-u-later? Is it only an online special product or can I get it at my General Dollar store? And do they come in matching color to the car?... Asking for another friend this time.

[@moparconnection]

The “vibration dampening impact-resistant trunk latcher 3000” is available at any Harbor Freight or Ace Hardware 🤣🤪

[@craigcontofalsky4387]

Should wear some goggles when using brake clean or carb cleaners. One shot in your eyes and you'll never forget again if you don't blind yourself!😎

[@moparconnection]

Thankfully, I'm pretty good about pointing the can in the right direction.

[@boydsdodge]

Nice job on the videos. Great to see Marsha being saved.

[@moparconnection]

Thanks 👍

[@jamest.5001]

First burnout turned enema! 😲

[@moparconnection]

LOL we didn't dip her that deep in the water!

[@kurtpoblenz2741]

Love Marsha !! She’s begging for that 440 🤘🏻🤘🏻🤘🏻👍🏻👍🏻👍🏻

[@moparconnection]

YESSIR! It's not gonna be the ground-pounder that's in other cars we've built, but a solid 400HP is PLENTY for this ol' girl.

[@leotafoya7814]

Just a little recommendation. Use a drip pan under the brake /backing plates when using Brake Clean. Keeps the dirt/brake dust/oils off of your driveway and helps the out Environment. Keeps the driveway clean and keeps the dirty stuff out of the gutters and drains when you hose off your driveways. Also if you use a wire wheel to clean anything that gets sealed and has bearings/fluid, Be sure to use an air hose to blow out any possible pieces off wire that may come off the wire wheel and possibly get into the bearing/gear area. What type of gear oil did Eaton recommend in the Sure-Grip ? Thanks for the good video.

[@moparconnection]

This driveway is so oil soaked a little brake clean could help! 🤣 We ran Lucas 75W90.

[@leotafoya7814]

It was just a suggestion for all the Mopar faithful who will do this at their own home. Just wondered on the gear oil if Eaton recommended any synthetics or friction modifiers like most other manufacturers do. Thanks for helping to keep the Hobby alive. "take a kid to a car show "

[@moparconnection]

They were all very good suggestions. And no, because there's no clutches in the TrueTrac it doesn't require a friction modifier like a factory SureGrip.

[@leotafoya7814]

@@moparconnection Do you have a Patreon account yet so people can support you monthly ?

[@moparconnection]

Unfortunately, I don't have a Patreon. But I do have a PayPal account at [e-mail]

[@PeteKaczmarski]

Does the 1969 Factory Service Manual you made reference to work for the 1970 car? Also, disclose cost for parts. Do you wanna do the same on my '70 Fury III ex-squad? With my 440 I will get rubber out of third gear.

[@moparconnection]

Yes the manual should work for most (not all) of this work. There’s some obvious changes of course. And I didn’t think I had to drop prices because 1. everyone’s got Google and 2. You might find better prices than me.

[@davej3487]

@@moparconnection Generalzed info from a 1965 or 1973 shop manual will work on this 1970 8 3/4. Ma Mopar did not change much as far as setup spec's on these rear ends. The older 1950's thru early 60's Bolt on the Drum axel 8 3/4 are different.

[@moparconnection]

You’re actually right, Dave.

[@alcyr5655]

I'd like to see more content. I love old C-bodies, my unattainable "C" dream cars are the '70 Fury GT, or a 300 Hurst. So I would take anything that comes close.

[@moparconnection]

It was the '70 300H that made me fall in love with these "fuselage body" C-bodies.

[@johnward2020]

Speedometer gear is next?

[@moparconnection]

Yeah when we swap in the new powertrain it’ll get a calibrated speedo wheel.

[@danielkoch6815]

Mo Marsha!

[@moparconnection]

A whole bunch more content is coming on Marsha soon!