Cm570 vs 870

[Waterloo]

(05-22-2021 )John Doe Wrote:  This has probably been discussed before but I tried finding it in the search bar and was unsuccessful. Please attach the thread and I’ll go about my day if you can help me out.

I want to know which of these earlier motors was the best at fuel efficiency and if there is a tune or upgrade I can make to get something close to the fuel efficiency of the newest isx engines.

I am an aspiring hyper miler and I can squeeze 8 mpg out of my 2350 if i try my best. However i recently discovered the cost of down time on my business and it was a very bad time for me. It was emissions related just a really bad experience at rush truck centers in Tulsa OK. And it got me thinking that if I had the consistent emissions problems my friends are getting i would surely be out of business. I literally lose sleep over this. And I do everything I can to keep the emissions running right.
That’s why I’m looking into these older motors, i don’t want to have to worry about the weeks of down time trying to fix the problems and I’m willing to sacrifice some fuel efficiency because there’s no way that the lower mpg will offset the cost of profit lost to emissions shop time.

Do what Rawze said, buy tools, the laptop, an Inline reader and learn how to maintain the truck. I would also nip this in the bud right now and get the truck over to Mr Hagg in Griffin GA. Let him go through it, fix the fuel pump, run the overhead, inspect the cam, install the gauges and fix that EPA headache for good. It will be worth the trip, even if you bobtail down there, just do it. That way there is no guessing as to the health and or condition of that motor and you can end the worry and sleepless nights. But, you still need to learn how to diagnose and repair this truck, do not think that it will not take some serious elbow grease to keep the truck on the road, unless you like being raped at the dealers. What you will find though, is once you rid yourself of the real problem, the maintenance on the truck and motor will be less arduous in the long run by eliminating these systems.

Haggai Automotive and Diesel Repair
1228 High Falls Rd,
Griffin, GA 30223

Opens 8AM Mon

Phone: (678) 688-8107