76 CCDRW...Cummins noises

[76zimmer]

When are you gonna start pulling the motor?

When I find some time..., really its down the list a bit at this point...at least after the CK5 get together next weekend.

There is that and the 70 in that Dodge is nowhere near the strength of the 70 in his dually. It has a much lighter center casting, smaller tubes (both diameter and thickness) and it uses those bastard sized 32 spline smaller diameter axles instead of the meaty 35 splines in the GM spec'd unit.

I have one of these Dodge D70's here and was looking into using it in my Suburban and in my research found several "oddities" about that particular 70. I still might have used it (it can be converted to the good 35 spline axles), but I got a good deal on a Detroit for the 14FF and decided to just stay with that.

Now the D80's that came in the Dodges are the real deal. Nothing goofy/wimpy about those. Only the 70's got the lighter parts.

I'm guessing that's the 70U that was used in that generation.

I'm thinking this is the case as well.
The CC has the HD unit.

Dave is not gonna hurt that 70 in his 2wd street princess. There's the over thinking again. They came stock in those trucks and did very well. Or until extreme abuse was involved. It is very easy to swap up to 01/02 rear disks as well. Actually just bolt on parts swapping.

Gotta stay with the duals, so will those hubs work on this housing? Will those create any additional stress to the tubes/spindles?

Bolt on stuff is fine, but if the parts interchange the gears can get put into the HD housing for a benjamin ($100 for you canuckers!) if all is well with them....I still need to get some BOM numbers for DTS to see if they will fit.



The 99 pulled this 8500# load home with an average of 9.2 mpg for the trip...not as bad as I expected for a 6.0 w/ 225K on it! It struggled on the 7.5 mile climb (5% grade) on I-77 on the south of VA...was down to 2nd gear 4500rpm for most of that, doing 55mph.
I used my brothers 05 Powerstroke to pull it about 100 mi while in NC, to get a feel for a turbo diesel...Don't know what mileage was for that short trip but the only area I was impressed with it was keeping the momentum up while doing 30-50mph on 2 lane roads....getting the load rolling it seemed to lag on power (ECLB 4WD F350), and rolling down the interstate (70mph) it seemed to do fine, but so does my gas engine when you get it rolling. Am I going to be disappointed with even less torque (compared to the PS 6.0) from this Cummins?

 

[DEMON44]

Cummins will make more torque than the powerstroke.

 

[Xtremegmc80]

Yep cummins has more torque no worries, you will be happy. I went diesel I cant even find myself buyin a gas car/ truck anymore. When I find a old car I already talk abt diesel swap. Yep im brainwashed

 

[jekquistk5]

Yep cummins has more torque no worries, you will be happy. I went diesel I cant even find myself buyin a gas car/ truck anymore. When I find a old car I already talk abt diesel swap. Yep im brainwashed

Same here I will never own a gasser as a tow rig ever again.

 

[76zimmer]

thanks for the reassurance!

 

[76zimmer]

from the BOM numbers, looks like the D70HD is a 4.10 standard 35 spline dual rear wheel unit.
The Dodge D70U is a 3.54 standard 32 spline single rear wheel unit.

Will the 70U 3.54 pinion work in the 70HD housing?

Can the 32 spline axles be used on the D70HD housing/hubs? Is the length right, is the hub surfaces right???

I'm not opposed to using the Dodge unit as long as the dually stuff bolts on.
I do still want the True trac back there though as neither axle has a locking type diff in it.

So, the two options:
Dodge+true trac+install 35 splines and dually hubs, rework shock mounts, stabilizer bar brackets, spring perches?
Or Chevy + true trac + install 3.54 Dodge r/p and axles?

 

[Raiderblaz]

If nobody can answer that for you talk to Carl Jantz or Jantz 4x4 and he will answer any question you have, really nice guy!
http://www.jantz4x4.com/jantz.php?p=home

 

[76zimmer]

I've been through the Pirate D70 thread. so much info, but can't find axle shaft compatibility between the two housings...

thanks for the link Mike!

 

[max 02]

Dave you will never be sorry you put a diesel in Bart.
Like said already... never would have anything else for a tow truck.
That 6 cylinder torque will be a thing of beauty. Sometimes I wish I bought a dodge!

 

[imiceman44]

I've been through the Pirate D70 thread. so much info, but can't find axle shaft compatibility between the two housings...

thanks for the link Mike!

The dually shafts are too long.
Your only chance is if the R&P from the dodge will fit in the Chevy axle with the carrier that you get.
D70 had different pinion offsets so that will be your problem.
What gears do you have in your dually?
I have one with 373 and I want deeper and I would gladly trade you.

 

[76zimmer]

Dave you will never be sorry you put a diesel in Bart.
Like said already... never would have anything else for a tow truck.
That 6 cylinder torque will be a thing of beauty. Sometimes I wish I bought a dodge!

I'm sure it will work out that way Dean, I was just not as impressed with my brothers 6.0 as I hoped I would be....I want WOW!

The dually shafts are too long.
Your only chance is if the R&P from the dodge will fit in the Chevy axle with the carrier that you get.
D70 had different pinion offsets so that will be your problem.
What gears do you have in your dually?
I have one with 373 and I want deeper and I would gladly trade you.

I got 4.10 Issaam....I think from what I've read, both axles are .625 offset, but not sure about the carriers...may have to take them apart and start comparing parts. either way I need a Tru Trac for the carrier.

 

[DEMON44]

Truetrac replaces the carrier.

 

[76zimmer]

right, they still have to match the offset of the case right?
I think those are about 700+ that I was hoping to avoid right now...the 4.10's can work for a bit, but I think I really need to end up with 3.73's minimum if not 3.54's.

 

[DEMON44]

3.73 would be ideal for your pulling and economy needs I think.

Truetrac ya is a carrier replacement unit. Not like a lunch box locker.

 

[imiceman44]

right, they still have to match the offset of the case right?
I think those are about 700+ that I was hoping to avoid right now...the 4.10's can work for a bit, but I think I really need to end up with 3.73's minimum if not 3.54's.

Yeah the true track will need to be for what ever gears you have.
So if the pinion offset is the same, just check that the carrier bearings are the same and you should be golden.
I still would take your 410 gears.

 

[76zimmer]

thats down the road a little I think, but when I get there I'll keep you in mind Issaam.
thx

Yeah the true track will need to be for what ever gears you have.
So if the pinion offset is the same, just check that the carrier bearings are the same and you should be golden.
I still would take your 410 gears.

 

[shady]

if your worried about torque... quit messing around with all these LITTLE motors put this in bart

 

[76zimmer]

I might need more triangation

 

[shady]

yeah... box the frame, few gussets, you'd be fine

 

[76zimmer]

I'll have to talk with Kert about a trans adapter though...