How to Choose the ** RIGHT**Rear End for your Hot Rod --Don't Overlook THIS...

Thanks to everyone who subscribes, likes, and comments! Maybe one small click for you, but every one is a Giant Leap for the Channel.
Trying to sort out which rear end you need is a whole lot more complicated than it seems.... width is only one tiny little factor.... there is a lot more to consider
this is a full Goldilocks ...it has to be just right
here is the calculator
spicerparts.co...
If you are into this thing please follow along, we are going to be going pretty deep on this one.

[@clarkmarkey1498]

This was a good video with great insight. You're spot on about the need for different gears with higher speed limits if a guy is running a stock-ish older engine. A 250 mile trip back and forth to school in the early 80s with 4.10 gears and no O.D. was not an issue. It does come down to RPM tolerance, though. Before the double nickel, speed limits and most freeway driving were in the 70+ mph zone. Deep gears usually meant long trips were made a bit slower than traffic. 10 to 20 mile runs weren't long trips, though and those muscle cars of yore were just buzzed for a while. I run a 3.42 gear with 30 tall tires and a T350 trans in my roadster. Mileage suffers, but the throttle response is great at 70 mph and it puts a big smile on my face. My wife is far less impressed...LOL. She finds the all the noise a bit much after about a half hour or so of freeway driving. Decades of driving across the midwest and western great lakes in small, cheap 60s sports cars or 4-sh geared trucks may have skewed my personal tolerance.

[@betweenthesharksgarage]

Thank you sir. And thanks for sharing your experience on here... RPM tolerance... that's a great way to put it. Its interesting though I can't really seem to find a lot of info on speed limits in the late 50's as they started building the Eisenhower interstate system... all i know is james dean was pulled over for 65 in a 55 in 1955 and from my experience ... most of the 50's cars I have driven have been 3.50 and up cruising comfortably around 60 so that's what they were set up for... it really doesn't take a lot of horsepower to cruise...but the gearing has to be right... so it seems to be a narrow margin somewhere in the 60's that cars started getting what we know as "highway gears" before the 55 mph limit thus making the search for a factory set up in a vintage rear end that much harder

[@rickyfulks6656]

4 speed/OD

[@danusmc8012]

I have a 27 Tudor body in pretty rough condition with a frame that’s been boxed. I have no suspension at all but I do have a rearend from a 69 charger and a 727 trans with a 318. I was wondering how to make it work in the frame. This helps. My only other rear option is a dually axle out of a Chevy 2500.

[@betweenthesharksgarage]

I’m glad to hear it helps. I will be doing a video on mounting the model a spring soon… which would be the same process as a model t rear spring in a model t frame and cross member. There is also a series I did on my mercury rear end that ends in a coil over kit from speedway. It might help to take a look at all the mistakes I made there that lead to my final set up.

[@danusmc8012]

I’m glad you are going to show how to mount the rear spring because this is my first time building a car from nothing. I’ve worked on cars that were complete but I’ve never seen this cars suspension set up. I know the body is a 27 but not sure about the frame. I think it’s a 27 or 28 but not sure how to tell and the person who had the frame before me boxed it and cut off all the suspension mounting points so I’m even more lost.

[@betweenthesharksgarage]

I ll do what I can to help. Building a car from miscellaneous parts is a totally different beast than working on a car and upgrading or modifying it. But don’t worry you can do it.
I am reasonably familiar with the early Ford stuff so feel free to shoot me an email with pictures of the frame you’ve got at between the [e-mail]. I’ll see if I can help steer you in the right direction at least help identify what ya got

[@johnkranz4004]

I like your method on the Rear end should work out

[@betweenthesharksgarage]

Thanks man. And thanks for commenting and supporting the channel

[@randiegadberry5448]

Lots of great information! Thanks for sharing.

[@betweenthesharksgarage]

thanks man. To me it was a lot to consider and i needed to break it down for myself I really hope it helps make it understandable