Originally posted by Artos
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Best V8 Engine Out There?
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Originally posted by deerplanter View PostThe plug still fires however the exhaust lifter doesn't open trapping the exhaust gas and then the intake doesn't open which allows the exhaust gas act as a spring to assist the piston movement. This is done with solenoid unlike old motors that used oil pressure. If there are issues with the motor i haven't heard of any, i have 100 k on my 6.2 which has the same system. I was just checking to see if i was missing something.
Like I said, our 2015 5.3 Tahoe at only 50k hasn't missed a beat & I do think it has AFM??
My old company 2011 6.0 Chevy went 335k before the trans went out & doubt it had it with the crap mileage...not sure if my new replacement 5.0 F150 has afm??
For sure the 2017 6.2 LT4 Camaro doesn't offer AFM.
I have to think some of these fuel saving systems can't be all that good for longevity...I despise the auto shut off at stops in the F150. I deactivate that deal as right after crank up. Stupid option to put on a truck.
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Originally posted by Johnny View PostMan, y'all got me looking at diesels today. lol
So Cummins, Powerstroke or Duramax? [emoji38]
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Again, pick what’s wrapped around the engine. They are all plenty capable.
When I rented a drive them all the Cummins had the best fuel mileage by far.
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Another thing I've noticed is that if you do look at a newer half ton, they've gone a different route with the gearing. Instead of say 3.73 or 4.10 with a 6 speed, now its an 8 or 10 speed and most of what you find on the lot will have 3.31, 3.42, etc. The extra gears are supposed to make up for it, but after driving a couple newer ones, there is a difference in feel. Lots of shifting and less oomph off the line IMO.
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I like my 5.3.
Had a 2002 z71 5.3 and it seemed to have more power then my recent trucks.
Also had a 2015 4x4 5.3 (not z71) and it consistently got 17.6mpg. Donated to Harvey.
Currently in a 2018 z71 5.3 and get 15.2mpg.
Stock size tires on all.
Its hard to judge MPG unless everyone includes tire size and transmission info. 4x2 vs 4x4 makes a big difference. Even z71 vs typical 4x4 has made more of a difference then I expected.
I will say, Im not sure I like the V8 to V4 switch. You can definitely feel it lag sometimes. Im sure it makes a difference in the gas mileage game though.
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Tundra 5.7 with tow pkg (4.30 gears) 2wd getting 15.5mpg lifetime. That's pretty dang good for a big V8 and low gears. It's a modern motor - aluminum block 32 valve overhead.
The 5.0 Ford is smaller but has a bit more new technology & gets almost as much power from much less size, which is why gas mileage is better.
I think Chevy & Dodge are still rocking the pushrod V8. Old tech, but easier to work on by yourself if you're so inclined. I'm not.
I think Ford has the best motor right now, but I'm driving my Toyota til it drops
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