LS Engine MPG

[Jibs]

What are the MPGs like after doing the LS swaps? I'm thinking about doing the swap and using my scout 2 for an Overland rig.

 

[1975IH200]

What are the MPGs like after doing the LS swaps? I'm thinking about doing the swap and using my scout 2 for an Overland rig.

What is an Overland rig ?