The next key ingredient to this package is the spragless design used instead of the typical roller clutch or sprag design used for 2nd gear. We include a Reid Super Bellhousing and a new roller tailhousing (where applicable). We start with a new Reid Racing case for a bulletproof foundation to prevent stress cracks and case failure common when used in rough terrain and/or with a transfer case attached. It is built specifically for the harsh conditions experienced in offroad competition. We’ve pulled out all the stops on this build. Upgrades are available for bigger power combos. A 34 element sprag, offroad specific clutch materials, lubrication modifications, and torrington bearing upgrades are added.
We use a reverse manual valve body with engine braking, a wider 1.25″ intermediate band for engine braking with HD material. It starts with a 4×4 core and HD case (subject to availability). This build is based on our standard Stage 2 build.
We can upgrade this unit to our other level of builds as necessary for you big power off road guys. This is similar to our Stage I build but uses a HD “K” case 4×4 TH400 core with a reverse pattern manual valve body that retains engine braking. We offer a TH400 setup for Rockcrawler and off-road applications. Offroad and Rockcrawler TH400s Rockcrawler 400 – 450 HP/TQ capable Options include other ratios, Reid SFI case, roller bearing tailhousing, small diameter drums, and other valve bodies.ĭue to the many variations in options, please call for a quote for your custom build. It includes an aluminum forward and direct drum, aerospace material input and intermediate shafts, alloy forward hub, deep aluminum pan, lightened OEM ratio (2.48) gearset, ALL thrust washers replaced with torrington bearings (fully rollerized), and aluminum valve body. The base model will utilize an OEM case and tailhousing.
This build has become one of our most popular due to its exceptional value and approximately 20 lbs lighter weight. Great for grudge racers, class racing, and anyone looking for that competitive edge. This transmission is designed for the racer looking to maximize efficiency and reduce weight. The Ultra 400 – Low weight, low drag design 450 HP/TQ capable but proven at much higher HP levels. Our Stage 1 TH400 is a heavy duty rebuild with valve body and hydraulic improvements, rollerized rear thrust, heavy duty intermediate snap ring, and OEM pan. Street/Strip and Drag Racing TH400’s Stage 1 TH400 – 450 HP/TQ capable Large diameter input shafts and other options for 2000+HP combos are available. There are too many variations to try to keep these on the shelf. They also include all new friction clutches, bands, steel plates, soft parts, filter, modulator (if applicable), as well as hydraulic upgrades, bearings added at several thrust locations, and other modifications depending on power level.Īlthough we use the build levels and options below, each transmission is custom built for the application. Very streetable and very reliable.Īs with all Jake’s Performance transmissions, they start with a select core that is disassembled, the case is blasted clean, hot tanked, pressure washed, inspected, painted and prepped for reassembly.
Crisp shifts at part throttle progressively getting firmer with throttle.
They don’t shift brutally hard we are able to keep them reliable by using many of the features GM designed into them.
These are designed to replace a daily driver TH400 behind a stock or near stock engine and have increased service life due to our hydraulic, mechanical, and lubrication upgrades. Our Stage I TH400’s are an upgraded build.
If you need a stout TH400 for your Mustang, Lightning, or other Mod Motor or SBF, BBF combo, give us a call. We prefer you call in before ordering so that we can help you select the transmission that best meets your needs. We have automatic shifting TH400’s in turbocharged applications approaching 1000 HP.
Many builders don’t know how to make the trans live with boost and still shift automatically, so they recommend a full manual valve body. We specialize in building TH400’s for forced induction street driven applications where the customer wants the comfort of retaining the automatic shifting features. We do stock rebuilds all the way up to 3000+ HP Pro-Mods. Our “stock” rebuild is strong enough for over 600 HP repeatedly yet functions like a stock transmission. Our TH400’s use exclusive proprietary parts that are only available in our builds as well as techniques that your normal transmission shop or builder is likely not aware of. We have extensive experience building the TH400 for all types of applications.