It’s fully synchro-meshed, helically cut 2nd, 3rd and 4th gears make it relatively easy to shift while driving, but this transmission really comes into it’s own with a super-low range first gear – 6.32:1.įor the non-Jeep fanatics out there, the T18 may be a bit aloof, as it is less common in conversions outside of the Jeep world, than is the SM or NP-series manuals. The T18 was used in ½, ¾ and 1+ ton trucks, and used by manufacturers such as Ford, Jeep and International Harvester trucks.
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The T18 is a renowned manual transmission and it is the successor of the also-well-known T98 transmission, with several improvements made on it.
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The 465 is one of the strongest manuals ever to be made, and with it’s short length, it’s a solid setup for 4-wheel drives, long and short.
But make no mistake, many off-roaders would, and do, happily bolt on the extra 40-or-so pounds that this 3-speed carries on its hips. Its super-heavy weight is what tipped the scales (pun intended). We sturggled with the placement for this venerable gearbox, bouncing around between 2nd and 4th, ultimately ending up here. There were three iterations to this gearbox, but there were really no drastic improvements or superiorities between them, so 4X4 owners looking to swap this into their rig need not be careful of the unit they choose. This was also one of the longer-running work-horse standard transmissions for GM, which started production in 1968 and ended in 1991. Not unlike the SM420, the 465 sports a very low 1st gear (6.55:1), with far better off-road manners – such as easier shifting. CH-465 or CH465)Ĭonsider the SM465 the SM420 sibling that grew up and made something for himself. Lets face it, overdrive isn’t all that attractive in a manual transmission when you’re dealing with oversized tires, and a rig that sees less highway miles than a golf cart. The NV4500 has an attractive low-range gear (5.6:1) and an overdrive, but its strength as compared to other 4-speed manual transmissions with torquey motors, is inferior. However, this is where conception and reality collide – The NV4500 is nearly twice as long as the rest of the manual transmissions on our list, which may make it difficult for the Jeep CJ5’s, FJ40’s, Sammies and other short wheel base rigs to give it a good home. Conceptually speaking, this transmission is better suited for short-to-medium sized 4×4’s with moderately powered engines, as a heavy, full-size rig coupled with big horsepower will certainly put this tranny into an early grave. We’ll try not to be too hard on the NV4500 as it is one of the better manual transmission, but it is plagued with long-term fatigue and failure problems, many of which are due to inadequate mainshaft clutch splines, and counter shaft bearing failures. Once, many moons ago, several of our media brethren latched onto this transmission and even touted it as the “holy grail” of manual transmission conversions for dedicated off-roaders looking for a decent low range coupled with overdrive, but as time ticked on, they were proven quite wrong. The NV4500 barely made our list of favorite manual transmissions. While some may argue that the NV4500 was born from Chrysler’s 1972 NP4500, this is far from the truth as there are few similarities between them. The NV4500 was released in GM trucks in 1993 (Dodge versions in 1995) through a joint-venture between General Motors and Chrysler Corporation, thus forming the New Venture Company (a naming derivative of Chrysler’s New Process division, and GM’s Stewart / Muncie division). The Top 5 Off-Road-Worthy Manual / Stick-Shift Transmissions Most inportantly, these transmissions can be fitted against a number of engine / transfer case combinations as they’re supported by a number of aftermarket specialists that make adapter plates for them. Our favorites listed below offer solid and reliable performance, have a good low range first gear, a solid gear split range, and don’t require lots of maintenance. This is a list of the best transmissions that will work in a variety of off-road and on-road environments. What it doesn’t say is “Our Favorite Transmissions…”, or “The Best Transmissions…”, or “The Strongest Transmissions…”. That’s right, it says the “Top 10 Off-Road-Worthy Transmissions of All Time”. But that’s ok – we like getting these letters, because it means that you have a pulse, and you can at least steam a mirror.īut, before we even begin this list of transmissions, I want each and everyone to take note of the title of this article. I can see the flaming emails now… “I can’t believe you left the Muncie RockCrusher off of the list”, or “You guys suck, what about the PowerGlide?!”. We know we’re in for virtual beatdown, just by writing this article.
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