JeffsJeep04
1/2 ton status
Wonder where the bad numbers originally came from? With it being 1.70, the gearing differences are negligable between the two.
CK5
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83 K5 diesel manual trans options
- Thread starter mwood1985
- Start date
I dunno the source of the incorrect 1.57:1 number...just that it's been floating around the introweb for many years. maybe the SM420 had that as a third gear ratio?
Rene
Rene
JeffsJeep04
1/2 ton status
Yeah, I got the number from Novak, which as seemed to be pretty solid on their info...crazy world. According to them, the SM420 is a 1.7 3rd gear.
Yeah, strange for them to have the wrong ratio posted for the SM 465...
I have a 465 sitting here, 2WD so it's worth approx nothing. I might tear it down and take some pic's to put this one to bed forever.
Rene
I have a 465 sitting here, 2WD so it's worth approx nothing. I might tear it down and take some pic's to put this one to bed forever.
Rene
mwood1985
1/2 ton status
what flywheel do i need for the 6.2/465 combo?
You need to ask for a 6.2 flywheel.
Any parts store can get it.
As for 465 behind a diesel, I can say from experience, it's better than with a gas engine, except everyone is saying to go with 4.10 with your 36" tires, I say 3.73:1
I had 35" tires and 3.08 gears and I loved it.
I wanted overdrive for higher speed but I topped at 65mph.
I am now working on my crewcab with that setup and once I have it running I will report on how it does with a heavy truck and 4.10 gears.
My other setup was in a K5 light vehicle and the only problem was the 3-4 spread but as Rene said, the engine had plenty of torque to take it, you just need to get used to it.
You were saying the 5speed you have on your ranger doesn't give you trouble in mud, well it's nothing like the 465, and I have done mud with my K5, you can not shift and you don't have enough RPM's to run it in one gear.
Maybe you just keep the ranger for mud and this one will do everything else.
Now if you don't have any rockcrawling, maybe you can use the NV3500, the only problem wiht that one is no Low gear, but has a good spread on the 5 gears. It was developped around the 6.5l diesel.
mwood1985
1/2 ton status
You need to ask for a 6.2 flywheel.
Any parts store can get it.
As for 465 behind a diesel, I can say from experience, it's better than with a gas engine, except everyone is saying to go with 4.10 with your 36" tires, I say 3.73:1
I had 35" tires and 3.08 gears and I loved it.
I wanted overdrive for higher speed but I topped at 65mph.
I am now working on my crewcab with that setup and once I have it running I will report on how it does with a heavy truck and 4.10 gears.
My other setup was in a K5 light vehicle and the only problem was the 3-4 spread but as Rene said, the engine had plenty of torque to take it, you just need to get used to it.
You were saying the 5speed you have on your ranger doesn't give you trouble in mud, well it's nothing like the 465, and I have done mud with my K5, you can not shift and you don't have enough RPM's to run it in one gear.
Maybe you just keep the ranger for mud and this one will do everything else.
Now if you don't have any rockcrawling, maybe you can use the NV3500, the only problem wiht that one is no Low gear, but has a good spread on the 5 gears. It was developped around the 6.5l diesel.
thats just it. where we go mudding the last thing you wanna do is spin hard the mud has small rocks in it that will chew tires up fast we have to creep through slow. we have fu nseeing who can go the farthest and with that area im figuring low gears are better becase we are basically rock crawling minus the rocks
http://www.oreillyauto.com/site/c/search/Flywheel/02271/C0338.oap?keyword=fly&year=1983&make=Chevrolet&model=K5%2BBlazer&vi=1050545
which one do i need to order?
JeffsJeep04
1/2 ton status
I don't know where you got this info, but that's way wrong. The 3500 was never offered with a diesel motor in front of it (surely not in a GM anyway). It's a decent medium strength transmission, rated for 350 ft/lbs, IIRC. The 4:1 first gear isn't a stump puller, but it's not terrible either. Lower then most car/street transmissions.
I started with an SM465, but wasn't happy with it, so I geared down and added an NV4500, better, but still not happy with it (too much gearing down low, just enough at the top), finally switched to an NV3500, and while it was still better again, I once again didn't have enough down low gearing.
I am switching to 5.13 gears here from 4.10s on 37s and we'll see how that goes with the 5 speed. I may still wind up switching to a 4l80e yet, just for the torque multiplication and quick shifting. I have trouble catching another gear under load, and even when I do pull it off, I worry about breaking the little NV3500 with the shock load of spinning all 4 tires. I do occasionally run the truck on the street (normally after a Jeep blows up and comes home on my trailer), so having decent street manners is important to me.
Offroad my biggest gripe right now is that the 6.2L doesn't have enough guts to turn the tires in 3rd gear low without powering out, and 1st / 2nd don't offer enough wheel speed to clear the lugs properly and get the truck moving. I feel an automatic would allow me to do so. That said, this is from a very Canadian wheeling area, lots of bog / mud and not a lot of crawling going on. From the crawling perspective, my truck is pretty much unstoppable. 1st gear low my truck will crawl up a wall without hardly noticing a thing. In high range, however, my truck is totally gutless, even on the street. It'll do it, but the engine works hard to accelerate the truck, the turbo screams and the black smoke bellows.
One of my favourite combinations that I've run was when I had 4.56 gears on 35" boggers with my same 6.2L turbo and the old NV4500. That combination performed well on the street, and still had enough gearing to be able to upshift and still turn the tires in low range. I am hoping that 3500 and 5.13s / 37" boggers will give me similar results.
I am switching to 5.13 gears here from 4.10s on 37s and we'll see how that goes with the 5 speed. I may still wind up switching to a 4l80e yet, just for the torque multiplication and quick shifting. I have trouble catching another gear under load, and even when I do pull it off, I worry about breaking the little NV3500 with the shock load of spinning all 4 tires. I do occasionally run the truck on the street (normally after a Jeep blows up and comes home on my trailer), so having decent street manners is important to me.
Offroad my biggest gripe right now is that the 6.2L doesn't have enough guts to turn the tires in 3rd gear low without powering out, and 1st / 2nd don't offer enough wheel speed to clear the lugs properly and get the truck moving. I feel an automatic would allow me to do so. That said, this is from a very Canadian wheeling area, lots of bog / mud and not a lot of crawling going on. From the crawling perspective, my truck is pretty much unstoppable. 1st gear low my truck will crawl up a wall without hardly noticing a thing. In high range, however, my truck is totally gutless, even on the street. It'll do it, but the engine works hard to accelerate the truck, the turbo screams and the black smoke bellows.
One of my favourite combinations that I've run was when I had 4.56 gears on 35" boggers with my same 6.2L turbo and the old NV4500. That combination performed well on the street, and still had enough gearing to be able to upshift and still turn the tires in low range. I am hoping that 3500 and 5.13s / 37" boggers will give me similar results.
They were in the 1/2 and 3/4 ton gm trucks with 6.5l diesel.
And I didn't say anything bad about it, and I am saying it's a better option for him than the 465 unless he wanted stupid low gear like 6.55:1
mwood1985
1/2 ton status
im gonna play with the diesel and 4 speed combo (if it dont work and im crossing my fingers it) will ill throw the gasser 383 and a 400 in the shop in there. i like the idea of diesel and a manual shift. makes mine stand out from all the other blazers at Seney
Nope, NV4500's behind the 6.5L's.
Without getting in pissing match I have seen enough half and 3/4 ton trucks 2wd stock w/ nv3500.
With diesels?
K5dreamer
1/2 ton status
No such thing as a NV3500 behind a 6.5L diesel from the factory -- It is not rated for the output of the engine.
I forgot you worked at GM and you know all the specs.
As I said, I have seen the trucks with my own eyes and NO they were not custom jobs.
I can say that I have yet to see a 4wd, but the ones I saw were 2wd.
And they were 1/2 ton trucks and light duty 3/4 ton.
That is my last post in here, you guys can take this to the grave.
I forgot you worked at GM and you know all the specs.
As I said, I have seen the trucks with my own eyes and NO they were not custom jobs.
I can say that I have yet to see a 4wd, but the ones I saw were 2wd.
And they were 1/2 ton trucks and light duty 3/4 ton.
That is my last post in here, you guys can take this to the grave.
Fine! We'll agree to disagree on this one! Ain't worth comparing who's dink is bigger, don't matter in the end!
