Not going in reverse

Thanks! That's what I'm worried about ... Re-build. My plan is to replace the 225 with a 318. I HAVE the 318 AND a 727 transmission BUT I'm not ready to do the swap yet. So rebuilding the 903 trans to keep me until I can do the swap, throws a total wrench in my budget!!!

My husband questioned whether it is a 903 or 904 or 902 trans BUT the '66 service states that the /6 had a A-903 trans. How do I KNOW what kind of transmission it is?!?!?

Have a great day!!

If your going to swap to a 318 you might consider finding a 904 to use behind it. The 727 is a great trans. but wayyyy overkill for anything but a blown/NOS crammed 318. I always recommend using the 904 anytime you can because it sucks up quite a bit less power to spin it compared to a 727. The 904 will also get better fuel mileage. Plus if you change to a 727 you'll have to change your driveshaft or pay to have it cut down and balanced which you wouldn't do if you keep a 904 in the car. Just my .02