Danko Reproductions Inc 1-866-626-3701
6.1L and 6.4L SRT8 Shaker Upgrade
Even though the 6.1L engine is very similar in size to the 5.7L, there are 2 key differences between the two, namely, their Oil Neck Housings and their Mounting Hardware. These differences may prevent the shakers from being fully interchangeable.
5.7L Oil Filler Neck housing
The 5.7L Oil Filler Neck comes through the shaker base and is sealed with the provided rubber grommet, which eliminates air leaks in the sealed air system.
6.1L Oil Filler Neck Housing
Compared with the 5.7L, the 6.1L Oil Filler Neck sits lower and about an inch further back towards the firewall. If you purchase the 6.1 upgrade, we will remove a portion of the shaker base and install a custom made fiberglass cap (with a rubber gasket and 3 Phillips screws) that completely covers up the oil filler lid. This makes for an easy oil change, and also seals out the hot air that resides below for a leak free air system. A modified 6.1 shaker base plate will work with a 5.7L Hemi, but not the other way around.
Mounting Hardware
Even though the mounting locations are the same on both engines, the very different aluminum manifold design of the 6.1 requires special metric shaker stud mounting hardware.