Starting this thread off with questions. Got a 2000 K2500, CCSB, 454 4l80 4WD W/ electric transfer case. I’m wanting to do a 8.1 swap, and keep it as OEM/factory as possible. How I plan to do this is use parts from 01-02 3500HD “classic” cab and chassis truck, as these few models came with factory 8.1’s in the GMT400 platform. My question(s) comes in here, what all do I need to pull from the “donor” truck? Or what all OEM parts would I need to source from said truck. I’m assuming I’d need the following:
-Engine harness
-Computer (I think they can factory with 0411 pcm from my research)
-Front accessory bracket(s)
-Front accessories
-Cooling system(?)
-Fuel system(?)
-Engine mounts(?)
-Flywheel and starter
What else would need to be swapped over? I believe (and correct me if I’m wrong) those GMT400’s W/ 8.1’s came with 4l80’s, so is there anything I’d need to swap over for my 4l80? My donor engine will be coming from a 2005 3500 Silverado, is there any engine components or engine electronics I would need to swap to fit the 01-02 gmt400 platform design? To my research only thing I would need to fabricate is exhaust and possibly intake tube if I can’t find one. Any other input will be appreciated.
Reason I’m doing this swap instead of rebuilding my 454, cost (and fun), in my area, the cost of finding a good Gen6 454 would only be slightly under the cost of finding a good 8.1 and all supporting pieces. A good 454 is 1800-2500 used in my area, a good 8.1 is 1000-1500, and using salvage yard parts I could get the rest for 500-1000. And why not rebuild the 454? I’m not a fan of how much it lacks in performance from factory, it’s a dog IMO towing or not towing, low rpm and high rpm, and building a performance version to match the stock 8.1 would put me around the same cost or more than doing a factory 8.1 swap. And in the future I can modify the 8.1 to my liking.
Again any input is appreciated so input away, thanks all!
-Engine harness
-Computer (I think they can factory with 0411 pcm from my research)
-Front accessory bracket(s)
-Front accessories
-Cooling system(?)
-Fuel system(?)
-Engine mounts(?)
-Flywheel and starter
What else would need to be swapped over? I believe (and correct me if I’m wrong) those GMT400’s W/ 8.1’s came with 4l80’s, so is there anything I’d need to swap over for my 4l80? My donor engine will be coming from a 2005 3500 Silverado, is there any engine components or engine electronics I would need to swap to fit the 01-02 gmt400 platform design? To my research only thing I would need to fabricate is exhaust and possibly intake tube if I can’t find one. Any other input will be appreciated.
Reason I’m doing this swap instead of rebuilding my 454, cost (and fun), in my area, the cost of finding a good Gen6 454 would only be slightly under the cost of finding a good 8.1 and all supporting pieces. A good 454 is 1800-2500 used in my area, a good 8.1 is 1000-1500, and using salvage yard parts I could get the rest for 500-1000. And why not rebuild the 454? I’m not a fan of how much it lacks in performance from factory, it’s a dog IMO towing or not towing, low rpm and high rpm, and building a performance version to match the stock 8.1 would put me around the same cost or more than doing a factory 8.1 swap. And in the future I can modify the 8.1 to my liking.
Again any input is appreciated so input away, thanks all!