Originally Posted by walt460
When considering a 3.5L, 3.7L, or 3.5 EB engine for a Ranger project, make sure you use an engine from a Mustang or a F150. All the Flex, Explorer, Escape etc. FWD applications have engines with a completely different rear-face-of-block, RFOB, so they will not bolt up to the RWD 6R80 or Mustang manual transmissions.
so you could not get a rwd trans on to a fwd block? both were ecoboost?
on the flex engine there was a little dip in the face at 1 oclock ish...and there was a little pocket like handle thing that the rwd block did not have that i could tell(it had the flexplate on it) i figured it was differences in years perhaps.
important to NOTE i did not use a tape measure, but i had a solid piece of copper wire and used my pocket plier deal to bend the ends over and measure the id edge-spread of the holes on the top part of the blocks, the holes matched set to set. the dowels looked in slightly different positions...like a 1/4 in off...but the wire worked out the same so i just figured it was optical due to the flexplate on one and no plate on the other.
i did not check to see if there was a depth offset or crank stuff....i was not there for that, but was walking by and took a few seconds to do it. those engines were being shipped and i was in the way...and it was cold as ...well your from here.
looked close enough to me....now the oil pan part of the situation i could not say...maybe the blocks differ there as well. livernois says keep the pan to the application and the trans should work out....(should?...wtf does should mean!)
so after you reminded me of the potential issue i called quicktime...again.
quicktime informed me that their bell will fit either cyclone offering, 3.5 or 3.7 whether ecoboost or n/a. front drive or rear drive. whether theres extra holes over stock is an answer i did not get
... which sux because they are not gonna make a bell to go to a 6r80
conversely the duratech is a different story which i suspect adds to the confusion....there was two patterns on those, as in two patterns and dowel locations on one block and neither looks to be like the cyclone...close but different dowel points. i do have the small duratech plate, i will throw it in the truck and when i get another cyclone in sight i will size it up. but the big duratech pattern i have not seen a spacer plate in those applications...i hope they have one, but i have swapped the trans on a few freestyles and the big pattern was sans plate. original engine and trans one owner vehicle so no reason to think it was left out on a previous repair on one of those jobs.
i just need to get a cyclone in my barn and figure it out i guess...
i will try to cut the bells off some broken transmissions. that always works great.