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Asked: Jan 30, 2008 - 10:24 PM

Status: Closed

Can I replace an automatic transmission with a manual transmission aftermarket?

Just wondering, are there aftermarket manual transmission available for sale? If so, what stores sell and install them? What brands are the best? Are such aftermarket transmissions reliable? Is it possible/feasible to replace an automatic tranmission with an aftermarket manual?

In Car Accessories > Performance Mods
3 answers - 183 days ago

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simpilot1

Date: Jan 31, 2008
Time: 04:57 AM

Assuming your vehicle had a manual as a factory option it generally is a simple swap using a new, rebuilt, or salvaged transmission. The hardest part will probably be installing the clutch pedal and linkage but if it was a factory option it still should be a straightforward bolt in. If it was not factory option there may be kits available depending on which vehicle you have. It is also possible to have an installation custom made but that can get really expensive. Just Google "automatic manual transmission swap". You'll get hundreds of hits, possibly even directions for your vehicle.

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mr_shiftright

Date: Feb 01, 2008
Time: 03:36 PM

It's much easier when a manual transmission was offered as an option on your car. If it wasn't offered as an option, you can do it, but it will require a lot more homework, some special conversion kits, or perhaps actual modifications, fabrications and welding.

Also keep in mind that automatics and manuals use different differential ratios. So you could end up not getting the extra power you thought you might, if that's your goal.

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paisan

Date: Apr 11, 2008
Time: 08:14 PM

Also be sure to note that if it's an AWD or RWD car you will likely need a different drive shaft as well since the drive shafts on ATs are usually shorter than on MTs. On AWD cars the differential in the MT may be different (and may be inside the trans case) and then you'd need to match the rear diffy with it.

-mike

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