Quote Originally Posted by hot19rod69 View Post
I'm trying to get away from the 245HP that the motor came stock with. I would like to keep the stock EFI if I can get say 400HP on pump gas. I will be running 39.5" boggers for playing in the mud. I'm not a mud drag or TTC guy just a wortking stiff who would like to play in the mud on the weekends with my boys.
The FI heads and FI intake must be kept as a set. The carb heads, carb intakes carb exhaust manifolds must be kept as a set as well. They are not interchangble among each other. If you want 400 hp with the OEM FI fuel system and the OEM FI top end, you are pushing the limits of the OEM FI system.

400 hp would be much easier with ported E6TE heads, aluminum intake, bigger carab and a camshaft.

Paul