Chevy and GMC Duramax Diesel Forum - View Single Post

**bowhunternkbay** · 07-06-2008, 03:15 PM

Don't know if your Duramax has the Allison tranny, hope it does. Mine shifts @ 45-47 mph into the next gear. At 60 mph, the tranny on my 06 is alrady in 6th gear, probably close to 1300-1400 rpm and gettin' about 24 mpg per the DIC.

07-06-2008, 03:15 PM	eBay Motors #4 (permalink)
bowhunternkbay Duramax Forum Supporter Join Date: Apr 2008 Location: South east GA, Kings Bay Posts: 134	Don't know if your Duramax has the Allison tranny, hope it does. Mine shifts @ 45-47 mph into the next gear. At 60 mph, the tranny on my 06 is alrady in 6th gear, probably close to 1300-1400 rpm and gettin' about 24 mpg per the DIC.