Engine Differences of the 350R

[bauern]

Yep, bit odd that they stamp over the FR3E number on the GT350R phaser but replace the plate on the Ford Racing kit.

Probably just a cheap cost save on not needing the replacement plate for the GT350R, and to make the Ford Racing kit part look better?

Honestly, it doesn't look like the "X"s are covering anything. There are 13 spaces in the part number and 13 "X"s. The last ones don't cover anything. The number looks photo shopped.

Sponsored

 

[Dominator961]

Honestly, it doesn't look like the "X"s are covering anything. There are 13 spaces in the part number and 13 "X"s. The last ones don't cover anything. The number looks photo shopped.

I agree 100% they are not going to print numbers on a part. They get etched / stamped.
More fake news and bad media bs.

 

[cosmo]

Honestly, it doesn't look like the "X"s are covering anything. There are 13 spaces in the part number and 13 "X"s. The last ones don't cover anything. The number looks photo shopped.

I agree 100% they are not going to print numbers on a part. They get etched / stamped.
More fake news and bad media bs.

I disagree, evidence is too strong here. In other pictures in the article, you can see the stamping at angles which would be too obnoxious to Photoshop.

https://www.fordnxt.com/tech-storie...ms-build-the-shelby-gt350s-voodoo-5-2-engine/

The stampings have a different depth with the X's and the GR3E part number, that's why they look different. They're done at a different facility with a different tool.

Also, we have a forum member here who was genuine enough to post his photo of a confirmed GT350 phaser. Two different GT350 engines (a GT350 and a GT350R) with different parts. This also explains the difference in base part numbers between the GT350 and GT350R.

 

[olaosunt]

I used these phasers in my last 5.2 /CPC long block build .
They are supposed to be an upgrade for the coyote motor.
https://fordracingpartsbydonwood.co...yote-high-performance-cam-phaser-m-6004-a50r/

 

[honeybadger]

As others have said, I'm inclined to think these are standard on all GT350s, with the GR3E-6C524-BA part # being a Ford Racing re-brand for a coyote upgrade.

This is the OEM GT350 lash adjuster part #: BR3Z-6500-A

But Ford Performance lists the set as: M-6500-M50R

Pure speculation on my part. However, I have a buddy with GT350R engine that's been torn down. He'll take a pic on Wednesday of his phasers.

 

[Dominator961]

I disagree, evidence is too strong here. In other pictures in the article, you can see the stamping at angles which would be too obnoxious to Photoshop.

https://www.fordnxt.com/tech-storie...ms-build-the-shelby-gt350s-voodoo-5-2-engine/

The stampings have a different depth with the X's and the GR3E part number, that's why they look different. They're done at a different facility with a different tool.

Also, we have a forum member here who was genuine enough to post his photo of a confirmed GT350 phaser. Two different GT350 engines (a GT350 and a GT350R) with different parts. This also explains the difference in base part numbers between the GT350 and GT350R.

Just because it’s on the Internet doesn’t make it real.
How do you know it’s a production part that shown?
Why would you think they’d stamp and ink part numbers over each other?

 

[bauern]

Just because it’s on the Internet doesn’t make it real.
How do you know it’s a production part that shown?
Why would you think they’d stamp and ink part numbers over each other?

Both part numbers in the photo are wrong. The correct number is -6C525- and has been at least since 2015, Voodoo or Coyote.

 

[cosmo]

Just because it’s on the Internet doesn’t make it real.
How do you know it’s a production part that shown?
Why would you think they’d stamp and ink part numbers over each other?

I believed that the GT350 and GT350R had the same engine, but have been presented curious things regarding the phaser and the initial issue of the GT350 and GT350R engine codes being different doesn't make sense if they are in fact the same. As a result, I want to see this study through as I'm not satisfied with anyone's theory that the engines are identical, but for some reason have different codes. As an engineer in the auto industry, no one does that. If Honeybadger can get some feedback from his R friend, that can wrap this up.

In the vehicle assembly plants, they wouldn't need a different engine code for the R if they were the same engine. The engine plants don't care which vehicle the engine was going to if the engines were in fact identical, so they wouldn't needlessly create a new code and have to manage separate storage space for sorting purposes. If a physical part is different (like a phaser) they would want to track that with a unique engine code, so that the vehicle assembly plants know which engine to pick. Something has to be different.

Regarding the stamping, it's likely a cheap cost save so that they can re-use the FR3E phaser cover plate. I don't know why they do this, as there are pictures provided in this thread of the Ford Racing phaser kit which shows a phaser with only the GR3E stamping, no X'd out FR3E part number.

 

[btown93]

1FATP8JZXH5526239 gt350r on ebay

Ford parts catalog shows BR3Z 6500 A for lash adjusters and FR3Z 6C525 B for phasers
Ford HVBOM (bill of materials) shows GR3Z 6500 A and GR3Z 6C525 B

I think Mr Turner has good information.

 

[cosmo]

1FATP8JZXH5526239 gt350r on ebay

Ford parts catalog shows BR3Z 6500 A for lash adjusters and FR3Z-6C525-B for phasers
Ford HVBOM (bill of materials) shows GR3Z 6500 A and GR3Z 6C525-B

I think Mr Turner has good information.

Thanks for the information. Can you take a look at a non-R for those same -6500- and -6C525- parts?

 

[btown93]

Non R vin shows BR3Z 6500 A and FR3Z 6C525 B in catalog and in HVBOM

 

[cosmo]

Non R vin shows BR3Z 6500 A and FR3Z 6C525 B in catalog and in HVBOM

Thank you. I'd bet a dollar those are the same parts for the 15-17 Coyote, and potentially even the -6500- is on the 11-14 Coyote.

 

[honeybadger]

Well, I hate inconclusive results. So I reached out to Ford Performance and they (meaning Ray) confirmed the FR3Z part # is in fact a coyote part #. They believed the GR3Z part is for all GT350s. When I mentioned that an FR3Z part came out of my car, he said that's the first they've seen of it. But he did confirm the GR3Z part # is designed to retain oil at high RPM better.

I am now more confused than when I began. Ugh.

 

[cosmo]

Well, I hate inconclusive results. So I reached out to Ford Performance and they (meaning Ray) confirmed the FR3Z part # is in fact a coyote part #. They believed the GR3Z part is for all GT350s. When I mentioned that an FR3Z part came out of my car, he said that's the first they've seen of it. But he did confirm the GR3Z part # is designed to retain oil at high RPM better.

I am now more confused than when I began. Ugh.

The Voodoo is built out of Romeo, and the Coyote is built out of Essex. So there would be no reason for the FR3Z part to be in Romeo, unless it was there to be built into the engine on purpose. Ford can do some confusing things, but that would be some fundamental broken issues with their supplier ordering system. I think your contact unfortunately just didn't have good information.

If any -R owners with their original engines (not a rebuild) want to pop their cam cover off and take a peak, that sure would be helpful.

 

[honeybadger]

The Voodoo is built out of Romeo, and the Coyote is built out of Essex. So there would be no reason for the FR3Z part to be in Romeo, unless it was there to be built into the engine on purpose. Ford can do some confusing things, but that would be some fundamental broken issues with their supplier ordering system. I think your contact unfortunately just didn't have good information.

If any -R owners with their original engines (not a rebuild) want to pop their cam cover off and take a peak, that sure would be helpful.

This was my conclusion as well. My guess is the cars do indeed run different phasers or he was misinformed about the GR3Z part.

Sponsored