Epiphany
Well-Known Member
All GT350's have come equipped with oil coolers since inception.After more research, it may be related to whether or not it has an oil cooler. I don't remember looking carefully, but perhaps there are fittings for the cooler on one and not the other. That being said, by 2017, all GT350s had the coolers, right? :-\ We'll find out eventually, but probably something silly like that being the difference.
HR3Z 6006 A is GT350R engine tag HA555A from 1/24/17
HR3Z 6006 B is GT350 but that number has recently changed to the new level KR3Z 6006 B. Perhaps @Epiphany has better insight into the differences, if any between R and non R.... but for whatever reason, Ford parts catalog does have different part numbers listed. It could be any number of reasons why.
There is NO reman yet for these. They are NEW
As you know, Ford seems to complicate the system far more than necessary. In this regard, it is difficult to gain clarity. The part listing says one thing and the engineers that designed something contradict it.
I have mentioned it previously but I was lucky enough to have had the opportunity to attend the Voodoo "reveal" at SVT/Roush headquarters in Michigan along with a dozen or so automotive related journalists. The engineers there answered every question I had. So when Ford Racing listed a chain in their catalog as being GT350R specific but that would fit the standard GT350 or other Coyote engines, a red flag went up immediately. I felt funny correcting Ford Racing but they were in error. They subsequently changed the listing on the chain. Recently however, something surfaced that I struggled with.
I worked with Steve on a few GT350 related stories including that of the reveal when the engine was first introduced to the press. He is as knowledgeable as can be in this regard and is vigilant about accuracy. In other words, I take what he says above to be without question, correct. The differences in the above parts (and ultimately the assemblies) may be minor but apparently they legitimately exist.Steve Turner of FordNXT said:A little something we learned during this process is that the R-model Voodoo engines receive unique lash adjusters, VCT mechanisms and cam covers, and these engines carry code 151.
https://www.fordnxt.com/tech-storie...ms-build-the-shelby-gt350s-voodoo-5-2-engine/
This was not our understanding when the engine was announced.