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  1. I agree with Joe. Start in second, shift to third at 20, and you're done. But you are well over 3000 rpm at 60 mph. I looked for a 3.9 because that was the ratio used in '52, the last full year of the straight eight but I couldn't find one at the time. I had a 3.6 from a '53 Roadmaster V-8, so I tried it. It works fine. You have to use every gear now, but it is much better on the highway. It's not going to win any drag races, but that wasn't going to happen with the 4.45 either.
  2. Here's my '48 56c. It's been this way for 40 years. It's my understanding in Texas, they used the motor number back then. It created alot of problems when folks would get a replacement engine from a junk yard. You can disconnect the cylinders from the top frame to raise and lower manually.
  3. That's too bad, because Pete is one of most helpful guys you're going to find on this site. Scott
  4. Matt, The '48 Super convertibles came with a 4.45 rear end, so they spin around 3000 rpm at 60 mph. I put a 3.6 in mine, which made a great improvement on the highway. By the way, I can't sell mine either... https://forums.aaca.org/topic/330782-1948-buick-super-convertible/?tab=comments#comment-2027850 Scott
  5. Going to the scrapyard Dec 1st...
  6. Heck, I started with less than that...
  7. "Right" is subjective, but here is a pic:
  8. Bolt holes 15 3/8" apart, so that should be the smaller engine. Don't know the year, but they have the smooth curve, so somewhere around the late 30's.
  9. Yes, it's available. I don't know what year it is. Thanks Scott
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