CFK2
02-19-2005, 02:57 PM
I am confused about the ratio on my 05 3500 DRW D/A. I was under the impression all Duramax trucks were 3.73, the towing guide on the Chevy web site shows it to be a 4.10. Could anyone clear this up for me, please!
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partsguy662 02-19-2005, 03:02 PM Just look in the glove box at your RPO code sticker..If you see a GT4 you have 3.73 (most common) If you see GT5, you have 4.10 gears CG just work'n 02-20-2005, 01:50 AM So you can get a 4.10s on a Dmax? Is that an Allison or ZF 6 or both? Duratys 02-20-2005, 02:03 AM Im not positive, but i think that option is only available on the 3500s. If it is available on the 2500 i would guess its only with the ZF6 Correct me if im wrong Los Lobos 02-20-2005, 04:16 AM the 4:10 are on the big blocks. | ||