Ford C6 Servo Anomalies video.

[68stangcjfb]

I've never seen this before. R servo with an H? Anyone else ever see one?
https://www.youtube.com/watch?v=C_iwEahjA7Q

[Bob Gaines]

I've never seen this before. R servo with an H? Anyone else ever see one?
https://www.youtube.com/watch?v=C_iwEahjA7Q

Never seen one. It is very interesting and I am better informed now for watching that video. For me it doesn't really matter because I would want the R marked servo mainly because it is the typical assembly line expected look but good info to know. A "H" marked servo would be considered wrong regardless of if it had the CJ internals or not. It is not like it can be easily verified one way or the other once installed ether. I don't know if you could count on the slight difference in covers to be consistent between the two H servos or not . Good luck trying to make the argument that it is the same as a R servo in a concours venue. I for one try to keep those type obscure arguments to a minimum.But that is just me.    

[warwick]

In the video what is really far fetched is it looks like the PN on the rare H Servo is the same PN as a R Servo.

[geraldt52]

We had a discussion about this many years ago on the 428CJ site.  We found a number of CJ C6s which "appeared" to be H servos all of which had cast iron tail shaft housings...including my KR vert that I've owned since '72, an original owner California Special 428 CJ, and a very low mileage original KR vert owned by Scott Fuller.  It wasn't an early/late thing, because my KR is very early, and Scott Fuller's was very late.  We found no explanation at the time, but based on the video it would seem likely that these are really R servos made with an H casting.

There was an old mechanic at the Ford dealer I worked for back in the day who used to say if you're working on a Chevy you just need to know what decade it was built in...if your're working on a Ford you need to know what year, what month, what day, what time, what plant, and what supplier, if you want to get the right part.  I've come to know he was more right than I ever imagined at the time... 

[Kent]

Just by the way I would need an H Servo if someone has one for sale. Thanks.

[Bob Gaines]

Just by the way I would need an H Servo if someone has one for sale. Thanks.

Which one? The typical H servo which is relatively still common with the smaller piston or the anomalous H servo being discussed here with the larger diameter piston like the R servo?

[warwick]

I have a May 68 build 427 GTE (H servo C6) and I have been in a number of R servo C6 428/429's back in the day. I have a number of anomalies in my car. My GTE hits gears just like an R clicks off the shifts. I think I need to pull that cover off and see what I got.

[Kent]

Just by the way I would need an H Servo if someone has one for sale. Thanks.

Which one? The typical H servo which is relatively still common with the smaller piston or the anomalous H servo being discussed here with the larger diameter piston like the R servo?

I would like to have the "normal" one for the 67 Shelby GT500 the other one wouldn't fit I think in a 67 C6 Tranny without machining the housing.

[Coralsnake]

I would feel better about his observations if he measured the bores. 

Is it possible the second H servo had sidewalls machined down for some reason or is it actually a different bore size?