Here's a cut-n-paste of the window sticker from an '05 showing 610 lb/ft torque rating. But I see a lot of '05 stickers still stating 600 lb/ft.
Must have been a rolling change (when they switched to the thicker pencil on the Dyno chart).
The one below is within a few days to a week of arriving at the dealership. When it gets here, it's mine.
Begin cut-n-paste:
2005 MODEL YEAR
RAM 3500 4X4 SLT QUAD CAB
PRICE INFORMATION PRICE INFORMATION (cont'd)
MANUFACTURER'S SUGGESTED RETAIL PRICE OF THIS MODEL INCLUDING DEALER PREPARATION
Base Price: $34,055
DODGE RAM 3500 SLT QUAD CAB 4X4
Exterior Color: Bright White Clear Coat Paint
Interior Color: Taupe
Interior: Leather-Trimmed 40/20/40 Bench Seat
Engine: 5. 9L Cummins Turbo Diesel-610 lb-ft
Transmission: 6-Speed HD Manual Transmission
STANDARD EQUIPMENT(UNLESS REPLACED BY OPTIONAL EQUIPMENT)
5. 9L Cummins Turbo Diesel-610 lb-ft
$5,460
Assembly Point/Port of Entry: SALTILLO, MEXICO
Must have been a rolling change (when they switched to the thicker pencil on the Dyno chart).

The one below is within a few days to a week of arriving at the dealership. When it gets here, it's mine.

Begin cut-n-paste:
2005 MODEL YEAR
RAM 3500 4X4 SLT QUAD CAB
PRICE INFORMATION PRICE INFORMATION (cont'd)
MANUFACTURER'S SUGGESTED RETAIL PRICE OF THIS MODEL INCLUDING DEALER PREPARATION
Base Price: $34,055
DODGE RAM 3500 SLT QUAD CAB 4X4
Exterior Color: Bright White Clear Coat Paint
Interior Color: Taupe
Interior: Leather-Trimmed 40/20/40 Bench Seat
Engine: 5. 9L Cummins Turbo Diesel-610 lb-ft
Transmission: 6-Speed HD Manual Transmission
STANDARD EQUIPMENT(UNLESS REPLACED BY OPTIONAL EQUIPMENT)
5. 9L Cummins Turbo Diesel-610 lb-ft
$5,460
Assembly Point/Port of Entry: SALTILLO, MEXICO