2 barrel , 4 barrel, whose got the answer?

Gold Rush said
I managed to convert a two barrel kickdown linkage to the Holley 4150 on my 318 car back when I was only 18. It's not too hard to do if you have a bit of mechanical knowhow.

The hardest part in my opinion is properly hooking up your throttle cable. You tend to have to clamp it the cable into the bracket on the sleeve, which tends to cause problems. That being said, my 71 Satellite Sebring has been driven like that for the past 6 years and hasn't broken the cable yet.

Not sure on the 83' vans, but the 70's had a rod throttle set up. My 72' had a 318 and I replaced it with a 340 and had to fabricate by welding on extension to the carb connection and yes I had to adjust the kickdown. Mileage, the 318 got 14-16 and the 340 got 10-12. All depends on how much fun I wanted.