Vacuum/Mechanical Advance Dilemma SB340

Ouch sorry to see this. But I guess you guys had your time in the sun with that one! Good memories I am sure! Thats what its all a about!!!
Thanks for your input on the 3:55 rear gear ratio. Just out of curiosity and self learning. What would be the drivability differ you comparing 3:55 and 3500 stall to 4:11 and say 2800?

Well I tell you how someone else that came here learned

It was a 72 Charger that started life as a 318 auto. We completely changed the car to a 72 340 ralley

340 727 323 gears
Motor was a 70 340, 474 lift mopar purple shaft cam, Iron 202 heads. The trans he bought from someone and the torque converter had a triangle sticker on it that said low stall converter. The car had 275 15 on 8 inch wheels.

It would not turn those tires no matter what you did. Unless you foot braked it bounced the car with the brake and got them spinning. Once they were spinning it would take off pertty good. We put 410's in it and still the same thing.

We took it to Island dragway in NJ. 14.98 and that was the fastest time after 4 runs. Now this was a big car but I had one in the past stock and it was a blast.

The timing at start up and idlewas 15 before total @ 35. in at 2000. That was achieved by closing the slots up in a factory dist. from 1/2 to 3/8 . then leaving the medium spring in remove the heavy and add a light one from DC. I would put a solid top plate from a lean burn dist. and remove the Vacuum advance use the little plate that held the cap from the lean burn. Cheaper than a MSD billet for a street car. My Digital 6 does the same thing but The dist. is locked The box does it for you. I have been doing this since the 80's

At the track it wouldn't even do a burnout in the water. I kept telling him converter. But he kept listening to all the book smart scientists. They said Brakes are sticking, he replace all the hydraulics.

They said Carb was to big, he bought a new Edlebrock. He just didn't want to spend the money on a converter. Electric fan, under drive pullies. Used LD 340 intake. Headers with big exhaust. Then I told him I have an old trans out back with a factory converter in it. I told him I would let him borrow it just to prove a point. We put it in. It was like night and day. We took the car back to Island dragway it went 13 .20 first time down the track. It brake stalled at 3100. you could not hook that car up on the street with those 275's.

He bought a cheap GER 3500 put the 323's back in and drove that car for years to and from Carlisle. and week end fun at the track. Someone bought it out there it was light green. The next thing you should buy is a converter.

My car in those videos has a 5500 tight Notice how it is lifting above idle. That car didn't put on a show it just left real quick at the track even though it was 100 lbs. heavier than that charger. and if you wanted to on a nice straight road you good torch the tires forever.

No one ever listens. We get many here with badly worn piston skirts and the back of the thrust bearing shot from trans pressure trying to push the converter out when they are trying to do a burnout. Call Ray Barton's Shop and tell him you are having this problem . Then tell him you are running a 2200-2400 converter. He will start laughing and hang up on you. Your car should blow street tires away. Your converter would be good in a stock 440 if your pulling a trailer The tires on my duster are soft 29 14.5's Hoosiers They grip so hard they push the tires unless you are in water.