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203 SUPER CRAWLERS
203 Super Crawler Info
The heart of the Wild Horses Super Crawler is the virtually indestructible New Process 203 range box. The NP 203 is a chain driven transfercase. They are found in 71-79 Dodges, 71-79 GMs and 77-79 Fords.Because of the ease of adaptability for our Bronco application we use the 23 spline Dodge version of the 203. The GM version is basically the same but will have a 27, 10 or 32 spline input.
The Ford version is a mirror image of the Dodge and GM, which for our application would make all the shifters interfere with each other. The Ford version uses a 31 spline input.
The only part of the NP 203 that we use is what we call the range box. It is the 2:1 gear driven section of the 203. So you're thinking what good will this do for me? It's very simple, it will double your low range in any gear with one shift.
You will need to supply your own Dodge 203. We have found them for as little as $50 and no more than $150 in local wrecking yards.
We now offer a number of partial kits for do-it-yourselfers who want to make their own shifters and cross members or hook up other transmissions or transfercases. Here is our current listing of what we have available.
FEATURED PRODUCTS |
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 $474.99 Super Crawler Kit NP 435 to Dodge 23-Spline 203 |
 $549.99 Super Crawler Kit 203/Dana 20 |
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Super Crawler Kit NP435/203/Dana 20 J-shift | |
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Item #: 8322 Super Crawler Kit NP435/203/Dana 20 J-shift This is the one that started it all and it is our most complete kit. If your NP 435 transmission just isn't low enough, here's the answer! It's our 2-to-1 Super Crawler. One shift of the Crawler and you've doubled whatever gear you're in. You'll have 4 sets of forward and 4 reverse gears to choose from! Example: if your lowest ratio is 60-to-1, the Super Crawler will give you 120-to-1. That's low!!! * You can still use regular low * Uses easy to find Dodge 203 range box * Twin stick shifter for Dana 20 included (J-shift case only) * New 435 main shaft is stronger and has larger spline diameter * Only lengthens drive train 1 3/8" Slight driveshaft modification may be necessary, depends on length of existing driveshafts. The kit includes: 435 main shaft, Dana 20 input shaft, all shifters and shifter brackets, cross member, adapters, urethane mounts, hardware and detailed installation instructions. CLICK HERE for Installation Instructions Other Shopping Features |
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Super Crawler Kit NP435/203/Dana 20 T-shift | |
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Item #: 8325 Super Crawler Kit NP435/203/Dana 20 T-shift This is the one that started it all and it is our most complete kit. If your NP 435 transmission just isn't low enough, here's the answer! It's our 2-to-1 Super Crawler. One shift of the Crawler and you've doubled whatever gear you're in. You'll have 4 sets of forward and 4 reverse gears to choose from! Example: if your lowest ratio is 60-to-1, the Super Crawler will give you 120-to-1. That's low!!! * You can still use regular low * Uses easy to find Dodge 203 range box * Twin stick shifter for Dana 20 included (J-shift case only) * New 435 main shaft is stronger and has larger spline diameter * Only lengthens drive train 1 3/8" Slight driveshaft modification may be necessary, depends on length of existing driveshafts. The kit includes: 435 main shaft, Dana 20 input shaft, all shifters and shifter brackets, cross member, adapters, urethane mounts, hardware and detailed installation instructions. CLICK HERE for Installation Instructions Other Shopping Features |
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Super Crawler Kit C4/203/Dana 20 | |
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Item #: 8320 Super Crawler Kit C4/203/Dana 20 Now you can get your C4 hooked up to a 23 spline 203 range box. We have been testing these in competition rock racers with very good results. The kit includes everything you need to get your C4 and 23 spline (Dodge) 203 range box working together. You will need to fabricate you own cross member and shifters. The 203 case will also need to be drilled and tapped. Pictured here is the kit installed with the C4, 203, and Dana 20 which are not included in the kit. Other Shopping Features |
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Super Crawler Kit NP 435 to Dodge 23-Spline 203 | |
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Item #: 8338 These are only the parts to hook the NP 435 to the 203 that are included in the kits above. Because of requests from customizers and fabricators we have made this kit available. We include our 435 instruction sheet but you are on your own from there. Other Shopping Features |
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Super Crawler Kit 203/Dana 20 | |
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Item #: 8333 Super Crawler Kit 203/Dana 20 These are only the parts to hook the 203 to the Bronco Dana 20 that are included in the kits above. Because of request from customizers and fabricators we have made this kit available. We include our 435 instruction sheet but you are on your own from there. CLICK HERE for Installation Instructions Other Shopping Features |
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