[md80891]

I wonder if its interchangeable?

 

[redriderbob]

The newer 5500s are not that far off of the capabilities of the old Mexican 6500s...

 

[md80891]

but still not class 6/7

 

[redriderbob]

True!

 

[Jerry Simcik]

Yes, but that also means they avoid a lot of restrictions, taxes, licensing issues, etc...

(Not that were saying they didn't, but just an FYI for those that are not familiar with the circumstances.)

 

[MoparNorm]

The newer 5500s are not that far off of the capabilities of the old Mexican 6500s...

Careful...when I said the same thing...sparks flew...

 

[md80891]

GVW on D600 to 25,000 lbs GCW 42000lbs

Ram 5500- GCW 37,500llbs

D600 Wheel base to 221 inches


So not the same.

 

[AutoTechnician]

GVW and GCW are two very, very different things. GCW is the combined total weight of the vehicle and trailer. GVW is the maximum weight of the vehicle by itself. The GCWR of the Ram 5500 approaches that of some class 6 trucks, but the GVW is not even close, and that's what really separates class 6/7 trucks from Class 4/5 trucks.

A Ram 5500 maxes out with a GVW of 19,500 pounds. In comparison, an F-650 maxes out at up to 29,000 pounds, and an F-750 up to 37,000 pounds. Believe it or not, Class 6/7 trucks do not weigh all that much more than modern Class 4/5 trucks (about 2,0000 pounds more). So that extra GVW translates into 8,000 - 15,000 pounds more payload - which is a big deal if you have a dump body, crane, cherry picker, etc... on the vehicle.

So while Ram 5500s can sometimes tow nearly as much as a Class 6 vehicle, the payload capacities are in an entirely different league.

 

[MoparNorm]

GVW on D600 to 25,000 lbs GCW 42000lbs

Ram 5500- GCW 37,500llbs

D600 Wheel base to 221 inches


So not the same.

Yeah we know, almost and "close to" do not mean "The Same"
Just a comment on how capable the new trucks are, but they lack in frame size and many other aspects.
My 2002 3500 Chassis/Cab is rated at 23,600, it's frame is 11" tall, so not your average 1 ton, in fact when you deduct the truck weight from the GVWR, there is close to 5 tons left, and it has been used that way, more than once without any complaints.

 

[md80891]

Its close implies within acceptable range essentially equal.

I am just tired of the can't do crowd and we need to turn to Fiat because of their commercial experience. The cube van market was us for a period of time and we made real trucks for a long time. On the 75ish D600 my dad started my youngest brother out in the buying and selling of GSA auction cars with a Dump/plow rig out of Dinosaur National Park. We sold it to a roofer who angrily brought it back wanting his money back saying it didn't work. we showed him how and he came back wanting more. we told him where we picked them up and the next thing you know he bought another 16-20. They were in service 15 years later.

Our class 7/8 were not the major players but we had our share and trucking was regulated back then. They were stout machines. Now we have another great styling language and no truck Class 6 and up.

This Bigland guy can seek other opportunities as well. Ram had its highest sales years before the split and still has not matched those numbers. This whole sales increrase due to the division split is pure B.S it has everything to do with economy coming back , the price of fuel and sales from differed replacement.

 

[MoparNorm]

Its close implies within acceptable range essentially equal.
.

Ha! Ha! Depending upon the field you work and expertise, yes and no.
In your aviation world, a 1/1000 might be way off, in my construction field, a slab within an 1/8" is perfect... also ...there is close, but no cigar.

 

[md80891]

Well we had to wait 10? years to get the commercial after market ready frame rails. Transportation Energy yearbook has the sales data by class but it would be interesting to see what the Ram styling transferred like up to Class 8. As far as the cab over I was wondering how the new Charger look would transfer.

 

[rjsdotorg]

Just for info, the industrial 413 was rated as follows:

RPM NET HP Net Torque
1200 75 325
1600 106 350
2000 136 360
2400 163 355
2800 182 340
3200 194 320
3600 199 292
4000 200 260

Compression ratio was 7.5-1 with a two barrel carb. Not only was the crank forged, but was induction hardened. Hydraulic lifters were standard

Anyone have similar specs for the 1971 413-3?
I'll have the A727 refreshed with modern TC, low ratio 1st, and possibly taller diff (I have shorter than 19.5 OEM tires) so I'd like to get the HWY cruise and grade climbing balanced around the torque curve.

 

[Adventurer55]

What rear end ratio do you have? 413-3 is a heavy duty truck engine. It has heads that the spark plugs go in at angles like a small block Mopar and hard to find exhaust manifolds. If you need to cruise without your engine screaming, I'd find a 46/47 RH trans with OD. Someone makes an adapter plate to go from small block to big block. Just my two cents.

 

[rjsdotorg]

What rear end ratio do you have? 413-3 is a heavy duty truck engine. It has heads that the spark plugs go in at angles like a small block Mopar and hard to find exhaust manifolds. If you need to cruise without your engine screaming, I'd find a 46/47 RH trans with OD. Someone makes an adapter plate to go from small block to big block. Just my two cents.

Diff is Dana 70HD with 4.55, and new tires are 225/70R19.5 (32.9" vs old 750-17 which were 34.2")The Big Blue DOG

Thnx, engine is a 265HP torque beast, and runs like a top. RV is a 71 Dodge Travco weighing ~11,000 loaded.
I priced out 46RH conversion at CRT and another place, and with a HD reman trans, adapter and TC it adds up to ~ $5k
Gear Vendor is $3500, and I'd still need trans freshened up which is ~$1500
I can get the diff changed for $800

 

[Adventurer55]

If you change the rear end ratio, your motor will run slower at highway speed but pulling power acceleration etc. will suffer. I was going to suggest a gear vendors. But if you freshen yours and add that, you might as well go with the built 46. Cake and eat it too. Still keep your pulling power and the 413 will be much happier at 60 or so.

 

[rjsdotorg]

If you change the rear end ratio, your motor will run slower at highway speed but pulling power acceleration etc. will suffer.

CRT and A&A sell 2.77 1st gear sets, which would make 1st same as OEM with my tires and 3.73 diff.

727 4-Gear Billet Aluminum Front w/ 4-Gear Billet Aluminum Rear 2.77/1.57/1:1 - A&A Transmissions

Too many options.
One problem with GV tail is that I lose the parking brake.