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Folks, I'd like to have my transmission cover painted along with a bunch of other parts.
Question: The round opening is bent upwards at two locations; is this normal from factory? Or is it due to someone trying to get more clearance with the shifter?
I'm reluctant to flatten it out at this stage. I'm doing a cab-off restoration currently.
This is on a 1965 F100 with T18 transmission. I understand these trucks settle over the years due to compression of the cab mounts.
Additionally, I haven't been able to find a rubber boot to cover this hole; looked at the usual parts places.
cheers Should this opening be flat. I fairly certain it's original to the truck
I'm not there but in the picture you posted the center hole looks like it isn't round as well as not flat. Might be an illusion. And no screw holes for the boot that I can see. The MPC shows what seems to be a flat cover - all I've taken apart personally have all been flat - as well as holes for the boot. Do you have the other parts there shown in the drawing? The 12130 and 12131? Those are parts that make up the "weather cover" and being the 12131 is typically flat around the circumference that I've seen it makes sense that the floor be flat in the same location.
Older info that ND posted in 2014. Looks like NOS Parts Ltd. has sold the one he mentioned but the other 3 you'd have to call because they don't list on the sites. Might be all gone since that was over 10 years ago.
Thank you for taking the time to educate me. The hole is indeed a circle. It does not appear to be a modification to an automatic cover, however, the lack of bolt holes raises suspicions. Perhaps a circle cutter was used. I do have a used rubber shift boot that came with some parts I got awhile ago. Looks like I'll be drilling holes should I decide to use it here. As for the donuts, they look simple enough to kludge something functional. I'm going to flatten it. It's the OCD in me that cares....
1965-1972, at least, didn't use a cover for automatics and 3-speed overdrive transmissions - other than for the automatics there was a small removeable cover on the passenger's side that allowed access to adjust the transmission bands. Drawing from MPC and picture of actual automatic band adjustment cover. Sorry if it seems like I have pictures of everything. I like to provide at least something more than my own words - and a picture is worth a few.
The 1966 Shop Manual shows a picture of the adjustment tool and the transmission tunnel appears to be removeable. I'm fairly sure they simply reused the picture from the 1964 manual. Note the battery cover in the floor also. I checked the 1964 Shop Manual, and it is the exact same picture and the earlier years I know it was removeable in this case.
I had a chance to look under the shift boot of a 1966 F250 with a T18 transmission. It was easy enough to unscrew the 5 or so sheetmetal screws to reveal a RECTANGULAR opening. It looked factory and only added to my confusion.
Besides the picture I posted before the MPC text portion says it's a 5" diameter hole. The NP435 transmission sometimes used a square hole but I know of exceptions there myself. I guess OCD and 60-year-old trucks may not be a good combination. Enough to drive a fella nuts...
Did you happen to notice which engine the F250 had?
Yes, it's a 240 that still retains its original metal ID tag attached to the coil. Purchased from the Stockton California school district about 15 years ago. I will have to confirm that the tranny is T18, now. I thought it was to the right and UP, but I could be wrong.
Sounds like it "should" be the Warner T18 which was used with 6-cylinder engines in the 65-66 F250 2WD trucks. The New Process 435 used with V8 according to what the books show.
If it is an NP435 look at the warranty tag and see if it has a 6-digit DSO. The NP435 was used behind 6-cylinder engines in the 1966 F250 4x4 and F350 with no option for the T18. NP435 also was the RPO on F100 with 352 V8, while T18 was used with the 6-cylinders. NP435 granny gear is a bit lower than the T18. NP435 better for crawling and heavy loads. It could have been a special order in the F250 2WD with 240 or 300.
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