I like standards mostly because they can be pretty screwed up and still get you home.
CK5
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So lets beat a dead horse. Nv4500 or 4l80
- Thread starter blazinzuk
- Start date
So then obviously the Dmax/Cummins is not even part of this equation.
People forget how some of the older stuff runs...like early 6.5 TD's, early 7.3 PSD's, and even early 5.9 Cummins with the H1C turbo. Having a giant exhaust housing with no waste gate equals really slow spooling, and more importantly at higher RPM levels. For me, it sucks. My 7.3 trucks will spool up around 2000rpm pretty well. Except, that when I shift RPM's drop to 1800ish. These engines have to fight to climb up into where the turbo will finally light off. The more weight, the worse that is.
I have no idea on what it would take to update a 6.5's turbo. I have heard of people using an HX35W off a 5.9 Cummins though. On the early 7.3PSD, it's a nightmare to "bolt on" a later Garrett 38R that is waste gated. With a 5.9, ditching the old H1C is as simple as un bolting it and bolting on something newer.
The 6.5 turbo is wastegated.
That's what low range is for. :P
I'm not sure that will be a huge problem if he has the granny-gear NV4500. Crawl speed is pretty low for highway use, even in high range.
@blazinzuk, I'm not sure which I'd recommend. They both have strengths, but I think the overall performance will be fairly equal between the two. So I'd toss in whichever would be easier to install. Sounds like the NV4500 doesn't need a rebuild, so I'm leaning that direction.
FWIW, my family's 6.5TD has a waste gate on its turbine. I've never had to wait for that particular engine to spool. But that particular setup (not sure which one it has) doesn't build boost until 2000RPM. If you want more than about 5PSI, you gotta be running 2500RPM. But building boost is nearly instantaneous.
We've never had it at altitude, and I haven't personally used it for heavy towing, but those who have used it have had no complaints about the gear split. It's a 1993, so the split should be the wide one (unless someone has changed it out). It's not a sports car, but I have no problem with it.
FWIW, my family's 6.5TD has a waste gate on its turbine. I've never had to wait for that particular engine to spool. But that particular setup (not sure which one it has) doesn't build boost until 2000RPM. If you want more than about 5PSI, you gotta be running 2500RPM. But building boost is nearly instantaneous.
We've never had it at altitude, and I haven't personally used it for heavy towing, but those who have used it have had no complaints about the gear split. It's a 1993, so the split should be the wide one (unless someone has changed it out). It's not a sports car, but I have no problem with it.
I like manuals for cars, but torque converters on trucks. esp when wheeling.
Full-size semi trucks are going automatics also....
Full-size semi trucks are going automatics also....
Agreed,with a manual,if your clutch is decent,its a good bet the truck will move when you let the clutch out..I've had automatics that were working fine one minute,then I lost ALL gears,or only had forward gears,no reverse,with no warning...though I've had a few clutches screw up on me too,almost had to get towed home too..
One truck I had,a '75 K5 2wd,had a Tremec 3 speed when I first got it factory,the clutch lost all its lining rather suddenly while I was driving it 65 miles to my parents house,at 10 degrees above on a frigid January night with snow flurries--I had to go as fast as it would down hills in order to climb up the next one,(buried the speedo at 85!)--and had to shift down into second gear,then first,to top some of the steeper inclines on the interstate!..hugged the breakdown lane the whole trip ,and it barely made it to their driveway..
I've had 3 fingered pressure plates fail suddenly with no warning too,but they would refuse to release,not propel the vehicle,so I was able to limp home by starting it in first gear at every stop sign or red light and shift without using the clutch..which did the synchro's no justice--by the time I got another clutch installed,the tranny was showing signs of synchro's going south...
ANY transmission can fail one way or another,but the more complex automatics are more likely to croak without much if any warning in my opinion...having hydraulic pressure,the torque converter,lockup clutch,bands and clutches all having to work perfectly in order for one to work properly makes them more likely to have problems..."simple" gear to gear manuals do have a lot less moving parts and tend to put up with punishment better..
The reliability of an auto vs manual doesn't really enter into my thought process. The auto will be rebuilt with good parts and the 4500 will be inspected and parts replaced if needed. I drove the truck the 4500 came out of. It shifted just fine. Nonetheless this is a tow rig and occasional daily driver. Will probably see less than 10000 miles a year.
black dawg
1/2 ton status
And spools quite quickly. The manual would be simple, and that early 4l80 pcm seems to go into limp mode pretty easily, and doesnt offer very much (compared to newer stuff) to help diagnose issues, especially intermittent ones...or maybe I have been lucky and just had screwed up ones?
I went through this same decision making with my new crew cab I just picked up that I'm making into a tow rig. I am putting an 8.1 in mine and went back and forth on auto vs stick for a while. I ended up deciding on an NV4500 for less electoronics, better gear options (I have a 95 version with the better spacing of 3rd and 4th....plus I really don't think the 4l80e ratios are all that impressive. I have one in my current truck and while towing my blazer I don't think 1st is low enough, and there is still a pretty big gab between 2nd and 3rd and 4th), and ease of swapping.
Knowing where you live (have driven through there multiple times) I don't think the argument of driving in traffic is really worth considering
. And since you said this will mainly be a tow rig/DD I would say NV4500. Better mileage too doesn't hurt
Knowing where you live (have driven through there multiple times) I don't think the argument of driving in traffic is really worth considering
. And since you said this will mainly be a tow rig/DD I would say NV4500. Better mileage too doesn't hurt
Yah stop n go traffic only happens here when there are cattle being herded down the road or for deer on the road
Knowing where you live (have driven through there multiple times) I don't think the argument of driving in traffic is really worth considering
Hey, now. I think I saw one car out on the main highway during our 2 days there.
Mostly so that any idiot can drive them.
I don't think many owner/operators buy them.
Martin
What is this "stop" that you speak of?
Our town is a little bit bigger than yours, but still small enough to not have this "traffic" problem that larger towns have. I love it.
I hate the four way stop in town.
Martin
Martin
I just realized I have to travel about 60 miles to even get to a stoplight.
I don't think I've lived more than 20 miles from the nearest stoplight. Yet. But our population density is higher than Wyoming's. Just about every state's is...
But I used to tell people to drive to the end of the highway and then keep driving for another 1/2 hour.
My favorite was when one visitor told us (via phone call) "I drove through this little tiny town, and I don't remember the name of it. And then I came to another town , and that one didn't even have a sign. So I know I'm getting close!"
50th in population and 49th in population density
