Quote:
Originally Posted by Dieselwrencher
The real difference will be in the engine mounts. You will probably have to build your own engine mounts and cross member. I'm not really sure if anyone is manufacturing them for a GM 4wd swap. You shouldn't have to modify the fire wall either. You'd have a little more work doing the exhaust and getting the RH drop tcase set up if you use an allison than an LS swap. In the long run I wouldn't think it would be that much more difficult. You can get a harness reworked for the duramax just like the LS's, and if you got a donor truck you'd have everything you need to transfer to your truck. (Other than the RH drop tcase)
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That doesn't sound too terrible. The main thing I'm worried about is wiring but I know plenty of people that could get it done if I can't, just may be a few more dollars.. In the long run I think it'd be worth it. I also plan on running a manual transmission instead of the Allison since I just got my floor pretty much done and I don't want a body lift.
thanks by the way!!
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1971 C20 Daily, Built 350/700R4
1971 K20 Project, LLY Duramax, 5 speed Allison, and 8 in lift on 37x13.50s
K20 Build