Gear Ratio Discussion - 5 Speed Swap Options

Trying to answer probably the most common question I get about the 5 Speed swap, which has to do with choosing which Rear Axle Gear Ratio to run.
In this video we review a spreadsheet that calculates vehicle speed based off these variables:
- Tire Size
- Rear Axle Ratio
-Transmission Gear Ratio
- Engine RPM
Which helps to identify some bonus performance advantages we can achieve by pairing the 5 speed swap with an axle ratio change. As opposed to leaving the axle stock.
This applies mostly to Panther Body cars (Crown Vic, Grand Marquis, Towne Car) but also applies to Mustangs and any Manual Swap really.....when swapping from a 3 or 4 speed automatic to a 5 or 6 Speed manual.
How to choose axle ratio for a 5 speed swap or manual swap project.

[@tristanhuet1888]

I was wondering if it would be worth it to do the work you did to the intake manifold or to just buy the Eddlebrock victor junior intake manifold and make that work. And I do would be great thanks.

[@bpbuilds]

Depends if you have access to a mill. If you can do the machine work yourself like I did. It would be more work. But less money to use the 1995 crown Vic manifold.
If you don’t have access to use a machine shop. You’d have to pay a local machine shop in your area and that would be very expensive.
At that point you’d be better off off with the edelbrock one. But hood clearance would be the issue. You will have to cut a hole in the hood.
Watch the videos by “make cool stuff” channel. I received my inspiration from him.
He used the edelbrock manifold. And ran a hood scoop

[@ConnorHuet]

Are the runners on the 95 intake solid and separate or is the entire manifold mostly hollow? I want to know if I can cnc a small hole through the center or if I have to open them all up in a larger hole. Also thanks so much for the correspondence your effort and videos are greatly appreciated.

[@bpbuilds]

@@ConnorHuet the runners are individual.
If you have a CNC mill you can mill through all of the runners. Basically opening up a massive hole exposing all 8 cylinders to the same cavity.
Then I welded a plate to seal everything up. And then bolted my adapter plate to that welded in plate.
It was very tedious. And required a lot of AC TIG welding.