New trany for 74 CJ5

[CJ5_Will]

I what to know what 4 or 5 speed transmission for my 74 CJ5 3 speed w/258.
I will be mostly be mudding and driving on trails.

[prariepunk]

what'll ya be doin' in yer Jeep?

[Junkpile]

The only bolt-in would be a T18 or T18a from a pre-1980 CJ

If you are willing to swap Tcases too, the T-176 4 speed and D300 from a 1980+ CJ would be nice. The gearing in the T-176 works great with a 258, and the lower first gear combined with the D300s better low-range would improve your crawl ratio by alot. An SR4, T4, or T5 from a 1980+ CJ could be swapped in too using the D300 that came behind them. Those three are kind of on the weak side though. With that setup you could use factory driveshafts from a 80+ CJ5 that came with whatever transmission you choose.

Those are the factory options.....with adapters, you can put anything you want in there.

	Crawl Ratio Essential for serious off-road treks involving steep hill climbs and descents, this is the final drive ratio of a vehicle in low-range. It allows Jeep vehicles to “creep” along (without depressing the accelerator) at very low speeds. Essentially, the vehicle does all the work. Crawl ratio is determined by this formula: first gear ratio x rear axle ratio x low-range 4WD ratio. The higher the number, the better the off-road capabilities.

[berettajeep]

Originally Posted by Junkpile

...with adapters, you can put anything you want in there.

Almost anything
on some combos you may have no rear driveshaft with a CJ5

just the T/C bolted to the Axle