1984CUCV
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- tampa florida
I have thought about doing a cummins swap myself on more than one occassion and have done some research. I know a few have done it here with success. the main question is what type of transmission do you want use to get the end result you want. Can you use the th400- yes - but you would most likely have to have it rebuilt/beefed up and add an OD to handle the added torque. If you go the route of a manual shift - which is the way to go - you will have to spend some $$$ and time to find all the pieces necessary. If you use the th400 you can use a Gear Vendors OD which is awesome but you will spend about 3k on the unit and need to have your driveshaft shortened about 1 foot. If you want to keep your 456 gears you are going to have to do something with the th400. The gearing will be way to low for a 6bt. Swap your 456 for some 373 or 411s will help but minimally I still think you will need to beef up your th400 if you plan on using it at all in a towing/offroad situation.
Does anyone have an opinion on using a 700r4 auto. behind a 6bt as an alternative to using a Gear Vendors OD?
Does anyone have an opinion on using a 700r4 auto. behind a 6bt as an alternative to using a Gear Vendors OD?