67 Dart 270...Project Old School

In between all the rain showers I managed to get the Dart out onto the highway for some testing of the OD. Cruising at 60 MPH showed 3200 RPM on the tach. Switching on OD results in a drop to 2500 RPM and the car wants to keep accelerating. Switching off OD results in....eh...nothing. The car seems to be stuck in OD until you come to a stop and the car shifts down to 1st gear.

I think I screwed up with wiring the switch on the 12V side instead of the GND side of the circuit. I will have to swap the wiring and see if the situation improves. Hopefully, that will resolve the situation.

On another note I think I have the perfect test candidate to quantify exactly how much HP/ET you give up going to the A500. I am seeing claims of reducing your ET 1- 1.5 seconds swapping from an A500 to a 904. The claim is the OD is constantly turning which robs HP when accelerating. Since I had my A500 converted to non lockup, I am using the same converter as I did in front of my 904. The only real change is the transmission.

I got my .023 drive roller for my Hobart MIG welder so I was able to weld up all the holes in the firewall. I can't believe how many holes there are. Trying to get the firewall smoothed out is going be a lot of work grinding down welds and skimming body filler.