Can I swap out my '05 3.7L, which has a GETRAG 238 6-speed Tran., with the 5.7L? I was just wondering if the transmission would be adaptable since I've heard if a HEMI is hooked to a 6-speed - it's the G56 Tran.
As from what I've heard, the 5.7 Hemi is too wide for the 05 Dakotas, if you do it, you will have to heavily modify the frame, as well as the front fenders and such. As for your question about the tranny's, I know that the 5.7 hemi will bolt up to a "T-56" viper tranny, not sure about the Getrag 238 6spd. Best bet on that one would be to take the tranny out, and see if it will bolt up the the new hemi outside of the truck, and than make modifications as necessary. You also may want to look into the recommended torque specification for that tranny. Hope this helps, keep us posted.