MTMike
1/2 ton status
KidJethro said:
Crap, and Crap.
Mine's a 4x4 (so I'd need a front 60 too) and it's a 60 out back.
CK5
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Weighed the tow rig/truggy/trailer today
- Thread starter Zeus33rd
- Start date
Crap, and Crap.
Mine's a 4x4 (so I'd need a front 60 too) and it's a 60 out back.
60 out back? In a 98? You sure? The 60 and 70 use the same cover...that could be confusing ya. I'm pretty sure there wasn't a 60 available in the rear on these trucks...
MTMike
1/2 ton status
KidJethro said:
I'm pretty sure - on the tag under the hood it says "Rear Axle: 6200# Spicer 6" "Front Axle 4850# Dana 6"
I think the SB 360 used a D60 rear, but I'm not positive. The V10 and cummins used the D70 and D80.
Kidjethro,
If I'm not mistaken (which I could be if the 2wd trucks got different rears than the 4x4s which is where my attention is at) your truck is an HD2500 because of the Manual transmission. You should have a D80 rear. If your truck was a 4x4 you would have the monster 271 tcase.
I wouldn't want the 4.10's either, with the auto the trucks are a lot faster with 3.55's.
Kidjethro,
If I'm not mistaken (which I could be if the 2wd trucks got different rears than the 4x4s which is where my attention is at) your truck is an HD2500 because of the Manual transmission. You should have a D80 rear. If your truck was a 4x4 you would have the monster 271 tcase.
I wouldn't want the 4.10's either, with the auto the trucks are a lot faster with 3.55's.
joez
1/2 ton status
Didnt he say it was an auto with a fresh rebuild?
I'm trying to remember, I thought the white '98 he looked at had the auto and this truck had the 4500, maybe they are both autos now that I think of it.joez said:
If it is an auto truck than 4.10's are pretty rare.
smalltruckbigcid
1/2 ton status
mikey_d05 said:A regular Minnesota liscence is only good for combos up to 26,000 pounds...I'd have to apply for a bus driver's liscence with that rig
No you don't if it has RV plates...you can pull a 5thwheel with a boat behind that with a standard license in MN...as long as the tow vehicle is licesed as an RV
George
Good point. Guess I didn't realize the RV thing. Just remembered the limit combo of 26,000 pounds since I help a friend's dad during harvest sometimes. I know you can run any weight of tractor/combine/implement combination, but not grain trucks and such. I should really find out what I have to get to drive a semi during harvest
rjfguitar said:I'm trying to remember, I thought the white '98 he looked at had the auto and this truck had the 4500, maybe they are both autos now that I think of it.
This truck is an auto AND 4.10's. Atleast according to the sticker under the hood. And 3.55's is starting to sound better and better the more I drive it around. Makes me uncomfortable goin much faster than 65-70 becuase the motor is screaming. That and it's totally out of power by 2400 rpm's.
Sorry for my confusion, for some reason I had it in my head it was a manual rig.KidJethro said:
I do however find it suprising that you have 4.10's, not that it's not possible because 4.10's were an option, but because I have never heard of a standard duty auto 3/4 having 4.10's. I would seriously consider a gear change to the much better 3.55's. i was thinking about it today when I was driving my dodge, about how 3.55's feels plenty low when you start to run out of "steam" at 60-65mph in 3rd gear. I can't imagine what it's like trying to do the same with 4.10's. As far as running it at the governor, I don't think the engine minds, my 24v spins 3K+ and it's basically the same engine besides the numer of valves, guys are turning the 12's up to 4K anyway, with new valve springs of course.If I were you, instead of spending a bunch on a gear change I would just do a 3/4 ton conversion to gain proper gearing for cheaper (wait, wrong type of vehicle we're talking about here:
). I bet it wouldn't be real hard to find a 3.55 D70 with drums at a wrecking yard, and you could probably resell your current 4.10 version to the next yard down the street.
Yeah, I'm already looking for a 3.55 Dana 70/80. I placed an ad on TDR lookin for a trade/swap. Also put a post on Pirate. When I got the truck I automatically assumed that because of the auto trans, it would have 3.55's or maybe 3.73's. I thought something was kinda odd after driving it around a bit, then was pokin around under the hood and found the sticker that said 4.1 axle ratio. 
70~K5
1/2 ton status
You might have 4.10s because the PO needed them for the factory rating to tow a certain weight. In GM gas trucks 4.10s and 4.56s upted the max CGWR.
Remeber Joe that which ever RE you replace it with needs to be compatiable with your trucks ABS system if you want it to work right.
Another way you could go is with a aftermarket OD unit. That would give the posibility of 8 forward gears at any time.
Remeber Joe that which ever RE you replace it with needs to be compatiable with your trucks ABS system if you want it to work right.
Another way you could go is with a aftermarket OD unit. That would give the posibility of 8 forward gears at any time.
Any D70 out of a 3/4 ton '94-early '01 should work IIRC. an '01.5-02 may work but they have rear disks.70~K5 said:
84_Chevy_K10
Banned
70~K5 said:
Forget everything you know about gas trucks when referring to the Cummins. It redlines at 3,200 RPM. I drove a 4.10 geared, 6 speed Cummins truck and I instantly knew that 4.10s were not for me. The narrow powerband and close ratios of the 6 speed resulted in an obscene amount of shifting.
I opted for the 3.73s as a result. 3.55s would potentially be even better--especially with the shorter tires like Joe has.
It seems you have learned a lot in the last few months.84_Chevy_K10 said:
I remember "someone" applying their gasser knowledge and refering to 3.55's as "air plane" gears that couldn't pull a string out of cats behind... 
You've come a long ways....Our 24v's do but his 12V redlines at 2500.
70~K5
1/2 ton status
I know a little about towing with diesels too. I had a '85 F350 dually NA6.9/ 4spd non od trans and 4.10s. '76 KW W900A SC350 RTO12513 with 4.33s, and now a '88 Pete 378 425hp 2100 rpm 3406B RTO15715 and 4.11s.
As I said in a earlier post if it was mine I'd put a OD box behind the trans. That would keep the low first gear for big hills and other spots I need the slow speed control and still have the option of double OD for high speed runs. This would also let me leave the trans in direct 1.00 geared 3rd gear and shift into OD for towing.
And Timmy, I was driving diesel powered trucks before you were twinkle in your daddy's eye. 
As I said in a earlier post if it was mine I'd put a OD box behind the trans. That would keep the low first gear for big hills and other spots I need the slow speed control and still have the option of double OD for high speed runs. This would also let me leave the trans in direct 1.00 geared 3rd gear and shift into OD for towing.
And Timmy, I was driving diesel powered trucks before you were twinkle in your daddy's eye.
84_Chevy_K10 said:
84_Chevy_K10
Banned
rjfguitar said:
My point exactly.
70~K5
Ford has never used an I6 Diesel in a pickup. Comparing a V8 Diesel to a Cummins is like comparing plums to watermelons.
There's plenty of slow speed control when you make 450 ft lbs of torque @ idle.
My truck redlines at 3k.
It will spin 3K? Someone changed the governor already for you. Stock 12v's are set at 2500 RPM's.KidJethro said:
70~K5
1/2 ton status
84_Chevy_K10 said:
Timmy, if you had been able to understand the rest of my post would have known that..........
The SC350 in my KW was a Small Cam Cummins that was rated stock for 350hp. That was a I-6 engine.
The 425hp 3406B is a 425hp 2100 rpm I-6 Cat engine. That makes 1450 ft lbs torque at 1250 rpm.
In the last 35 years I've driven most combinations of engine/ trans in common use in the US be them meduim or heavy duty trucks.
I've pulled loads grossing around 80K with a ford gas engine and a 5/2. 5 speed trans, two speed rearend.
I driven trucks with a V12 detroit desiel. I've driven trucks with a 3408 cat engine.
I've drive trucks with about every I-6 diesel used in class 8 trucks.
I've driven trucks with allison auto trans.
I've driven trucks with 9,10,13,15, and 18 spd roadranger trans.
I've driven trucks with 4x4, 5x4, and 6x4 manual trans. (4x4 is a 4 spd main trans and a 4 spd aux trans).
The fact that at this time I don't own a light duty diesel pickup is I don't need one. The '95 C3500 I have does everything I need now. And I've only put 65k miles on it in 10 years. Plus I saved 15K dollars when I bought it compared to the '95 2500 Dodge CTD I looked at before buying the Chevy.
