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1st thing I would check, since your running points, is the ballast resistor. the engine grounds

657 is the standard in the 61 year, ID by the last 3 numbers on the case. This is the stock 3rd member and the seals should be available https://imageevent.com/jeffc/techstuff/techstuff?p=15&n=1&m=24&c=4&l=0&w=4&s=0&z=2 https://imageevent.com/jeffc/techstuff/techstuff?p=16&w=4&c=4&n=0&m=24&s=0&y=1&z...

https://imageevent.com/jeffc/techstuff3?p=6&n=1&m=24&c=4&l=0&w=4&s=0&z=2 https://imageevent.com/jeffc/techstuff3?p=4&n=1&m=24&c=4&l=0&w=4&s=0&z=2 here is what your looking for. 65 is a one year only 727 ( loadflight instead of torkflight, extra clutches in the truck trans) if you want a number match...

late 60s early 70s A body cars use the same vents (dart, duster,etc.) might check ebay

if the disturber is in the front of the engine 361 or 383, if in the back 318

if all your changing is the core support then that will swap just fine.

there are no coolant passages in the lower block( below the crank level), however, there are soft plugs higher up on the side of the block, rear of block also, these plugs sometimes leak with age. Check for your leak again, is it on the side , back or front. I’ve added a pic to my original post. Do...

there are no coolant passages in the lower block( below the crank level), however, there are soft plugs higher up on the side of the block, rear of block also, these plugs sometimes leak with age. Check for your leak again, is it on the side , back or front.

I have the factory service manual, I'm in Vancouver, you can come over and take photos if you want

You can access the inside from the cowl by removing the cowl cover and wiper linkages, you can reach your arm down to coat the inside with whatever you choose to use, though I can not recommend fiber glass unless you rust treat inside first

here is how i repaired my 62, best to repair with metal, but i have used epoxy like the 2part type, must clean and treat metal with anti-rust such as POR15 https://imageevent.com/jeffc/rust

wide molding started in 65 and is the same when ordered with all years it was used through 68.

might check with Wildcat Mopars in Sandy,Oregon, can look them up, closed Sunday and Monday https://www.wildcatmopars.com/

On a 65 trans the cable goes inside the trans and the photo posted in the above post is for 66 and up trans, https://imageevent.com/jeffc/techstuff3 ... =4&x=0&p=7 shown in photo 8

In general I agree with PWD, However, since the cable enters the case you will not be able to see the cable at the trans end, you should be able to hear it shift inside the case with a automotive stethoscope, or by ear ( last year of this application, only year with 2 cables ). If it turns out that ...

https://imageevent.com/jeffc/techstuff3
here is a link to my tech sec were there are instructions on adjusting kickdown on one of the photos and different apps

first and reveres use same band inside the trans, so may only be a "detente" adjustment were the cable enters the trans. Trans service would be drop the pan and replace filter and lost fluid/gasket. I will assume the kickdown is hooked up and adjusted, has the carburetor been replaced since you got ...

It should be a 2 cable shifter. Is PARK working or is it in neutral at any point? IS it in gear only in first and reverse? or just 1st? Have you done a pan drop and filter change?

I have been using NAPA part 703-1221, fit just fine, 70 to 62 trucks

they sound stock, the lenses are aftermarket replacement