Cams?
Do the 55 NA motors have different specs than our motors? Ive worn the search button out for this evening.
And yes the cams in the 5.5L F/I engine are different than the cams in the 5.5L N/A engine according to PTE's research.
They will be higher lift, with a change in overlap and change in LSA. The cam will be slightly lumpier but nothing too radical. It will be a complete drop-in replacement. Based on the setup of this cam we suspect idle will need to be raised from 550RPM to around 700RPM. This can be done using Star Diagnostic very easily.
I dont have a firm price yet but I estimate $3,000 for the pair. This price will change depending on how many sets we run.



