IMM Engines 408 build

I've been talking to Ryan Hogan (tuner guy) over the phone and we discussed cams for my engine. My thinking was that I need to stay in the 112-114 LSA range because this engine will be fuel injected. The ECM would not work correctly with a LSA in narrower than that range. He told me that he can tune any cam to work with the ECM.
We decided on a custom ground cam from Comp Cams in their XFI series which works with fuel injection. The cam will have 108 LSA.

Cam specs: 230/236@.050 duration .576/.571 lift 108 LSA

Going by Wallace Racing Dynamic Calculator the V/P index will go from 127 to 147... so another words this new cam should work better.

The new lifters IMM sent me will get installed when I switch out the cams. I will be glad when I get the cam installed and the engine tuned properly.

Another thing is I had Flowtech shorty headers since I have a Dodge Ram. The tuner guy said the shorties would be a "bottle neck" for this engine that I needed to go with long tube headers. I wasn't really sure about finding long tube headers for my 03 Ram that would fit without a bunch of headaches. In 03 Dodge switched from the 5.9 to the Hemi engine and finding headers or anything else most times to fit my truck in that year range is not easy.
I decided to purchase the ceramic coated long tube Pacesetter headers in the 96-01 range and see if they would fit since they didn't have headers listed for 03 year. The headers fell in and had not one issue (picture above).