Gear ratio opinions

[1986stangfan]

I am about to rebuild the 8.8 that will be going in my 1973 ford maverick. 31 spline axles and carrier

The car will be making around 475-500 RWHP with a positive displacement blower.

The transmission is a viper spec T56
1st gear 2.66
2nd gear 1.74
3rd gear 1.30
4th gear 1.0
5th gear .74
6th gear .50

I have a set of 3.73 ford racing gears and a set of 4.10 ford racing gears. Trying to decide which to install.

Looking for experience and opinions.

[ZR]

Not a bad choice between them.

[1986stangfan]

Not a bad choice between them.

I’m leaning towards the 4.10 because I will be running a 26” rear tire, but I know that traction will likely be an issue and I don’t want a super short/useless first gear

[1986stangfan]

Not a bad choice between them.

I’m leaning towards the 4.10 because I will be running a 26” rear tire, but I know that traction will likely be an issue and I don’t want a super short/useless first gear


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[ZR]

You might find 6th gear a hit or miss at lower hwy speeds with 3:73.

[1986stangfan]

You might find 6th gear a hit or miss at lower hwy speeds with 3:73.

What do you think first gear will be like with the 4.10?

[ZR]

Same first gear in the Cobra with 3:73, cover a lotta ground before it needs second.

[Zippy]

Something to consider, 4.10 gears are usually louder then a set of 3.73 gears. Not really sure why... but that's just how it is.

[bbriann]

RPM calculators on web, input transmission, rear gear, tire size makes nice graph for each gear for various speeds to give you an accurate rpm in each transmission gear.