Dart Question 72 Swinger Special

[sportsuburbangt]

Love the site!

Have a general question on my torque converter.

I have a 72 Swinger Special 318 AT PS AC, and AM Radio.

I am building a 340 (72 casting) for it, it will have 9.5 pistons (bored 30 over), 455 lift MP cam, 3.21 sure grip rear in a 8.25 rear, 2.02 intake heads and an Edelbrock airgap intake. I am using 1969 casting 340 manifolds and a TTI 2.5 inch exhaust system. I am using the stock 904 transmission, the transmission has 89k on it and works fine with the stock 318.

Should I replace the torque converter? If so with what?

I know that the 904 might not last too long with this 340, I will be putting in a shift kit and a external trans cooler to keep it alive.

I am running 235/60 15 tires all the way around. I am using the car on the street and take it to the track maybe once a year.

I am building this to have fun with take to work a couple of times a month etc.

Mike

 

[Max340]

The trans will hold up for about a year, maybe. The converter is ok, but the trans simply doesn't have the guts to do what you want. I know this, because I did the same thing. The shift kit will keep it alive for a while. After that, it'll start to find the weak link, over and over again. The rear clutch, which is the main clutch for all forward speeds, will eventually die and you'll have to rebuild the trans.

You may want to replace the converter with one that is specifically built to spec. The stock converter will work, but may not give optimum perfrmance.

 

[sportsuburbangt]

Thanks, that is what I thought.

If i get through the summer i'll be happy.