COS80
SILVER Star
A heat shield or two ought to cover it, too.
Attempting the next best engine swap for 80s IMO
- Thread starter Drewthecarguy
- Start date
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Subscribing for the future development around this, and how it evolves.
Very interesting to see how you flipped from diesel to gas and back. But it looks like efficiency is really awesome. I can't imagine getting 550+ miles to a single tank. Would never have any real need for extra fuel like that in the U.S.
Good job so far.
Very interesting to see how you flipped from diesel to gas and back. But it looks like efficiency is really awesome. I can't imagine getting 550+ miles to a single tank. Would never have any real need for extra fuel like that in the U.S.
Good job so far.
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- Thread starter
- #243
Not much of an engine update but I thought I’d share these sweet fog light brackets i designed an 3d printed with PA6-CF. They accept morimoto 4bangers and I’m thinking about making some for the Baja design squadron lights too
Let me know what you think and if anyone wants a set
I now have low beam lights that actually light the road up lol
Let me know what you think and if anyone wants a set
I now have low beam lights that actually light the road up lol
Following... 
First prototype of V 2.0 of the adapter has finally landed and we are going to test the first article on the new Duramax 3.0 10 speed conversion. This adapter version eliminates the need for the 95-97 trans adapter piece. After testing we will pull the trigger on changes/updates and get these ordered up.
I have a turbo car with a ramhorn turbo manifold. It would get so hot it would cook the paint on the hood of the car. DEI exhaust wrap made a significant difference in under hood temperatures
- Thread starter
- #247
Well I just did a 26 hour road trip to Maryland and back in the cruiser. And the trip there and the trip back was non stop. I had zero issues with power steering what so ever. I think that’s a pretty good test. Everyone is talking about heat but you have to remember this is a diesel not a gas engine. Downpipe doesn’t get nearly as hot as you think. Cruising 80 on the interstate at 1800 rpm in 10th gear doesn’t generate a lot of heat.
Going to Moab in March, that will test the reliability of the power steering in trail riding conditions
Going to Moab in March, that will test the reliability of the power steering in trail riding conditions
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- Jan 6, 2012
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How many miles to the tank did you get?
- Thread starter
- #249
I was going about 450 miles a tank. I was only getting around 25mpg but I think it’s still a tuning issue because I still have some CELs I haven’t deleted yet for stuff I’m not using which might be detuning the engine but I’m working that stuff out still
I havent read the whole thread yet, just browsed through so maybe I missed it but how are you tuning? Can you tune the factory ecu or using a piggyback tuner?
- Thread starter
- #251
Factory ECM with Hptuners.
Wheeling (especially rock crawling) would be far more of a torture test. No airflow while working both the engine and the power steering hard. I suspect ceramic coating that pipe would make it a non-issue though.
- Thread starter
- #253
Newest update I have removed the electric thermo management crap and now running my adapter I designed. I should now be able to run the engine a lot cooler than it normally runs. It usually runs around 240 degrees which is crazy to me but they claim it helps with fuel economy. Using a 190 thermostat so 210 should be easy to maintain
Also with that electric crap my heat wouldn’t get hot until fully warmed up which takes forever if I’m just going around town.
Now my heater core is ran a lot simpler
Also with that electric crap my heat wouldn’t get hot until fully warmed up which takes forever if I’m just going around town.
Now my heater core is ran a lot simpler
Anyone active as a contributor on wikipedia? I think this item belongs in a certain article!
@Drewthecarguy Where did you source your engine from? What type of vehicle was it out of? If I am interpreting HPtuners website correctly, not all LM2s of the same model year are compatible depending on what type of vehicle they came out of. Do you have any insights on this?
- Thread starter
- #256
Mine is from a 2021 silverado. Yea you have to be careful when you get newer than that your looking at a global B computer which as of right now can’t be made stand alone because of the transmission. But other than that what model it came from shouldn’t matter. Tahoe, suburban, pickup should be the same.
- Thread starter
- #257
You have to look at the transmission. When GM went to a turn knob gear selector, those won’t work
The HP tuners website for LM2 w/e46 ECM says they don't support Chevy Suburban LM2s - only the pickups. Not sure what the difference would be. I'm interested in this swap but trying to figure out the best place to source an engine from.
GM E46 ECM Service – HP Tuners
HP Tuners is thrilled to now offer industry-exclusive custom tuning support for the E46 ECM found in 2020-2022 Chevrolet Silverado 1500/GMC Sierra 1500 3.0L Duramax (LM2) trucks (non-Global B vehicles). The E46 ECM must be upgraded in order to use VCM Editor for tuning. Own a 2020+ GM vehicle...
www.hptuners.com
Did you buy a full truck and pull the engine or buy a complete takeout?
- Thread starter
- #259
I got a complete take out. I’m guessing the suburban has a turn knob transmissionThe HP tuners website for LM2 w/e46 ECM says they don't support Chevy Suburban LM2s - only the pickups. Not sure what the difference would be. I'm interested in this swap but trying to figure out the best place to source an engine from.
View attachment 4031911GM E46 ECM Service – HP Tuners
HP Tuners is thrilled to now offer industry-exclusive custom tuning support for the E46 ECM found in 2020-2022 Chevrolet Silverado 1500/GMC Sierra 1500 3.0L Duramax (LM2) trucks (non-Global B vehicles). The E46 ECM must be upgraded in order to use VCM Editor for tuning. Own a 2020+ GM vehicle...
Did you buy a full truck and pull the engine or buy a complete takeout?
Hmm that actually makes a lot of sense. I've been in a '21 gas suburban and it has buttons, not mechanical linkage for the transmission. I can't imagine they would have an entirely different shifter setup for the diesel version.
Thanks for all the info you've posted on your build. Very interesting.