The 200 r4 has a great overdrive, and is strong enough to run behind the six. If you do eventually get into higher horsepower, the 22 can be beefed up by a number of companies, or, you can buy the good parts and put them in yourself.
The rear end ratio is important in this whole concept. If the rear gears are 3.08, then a 200 is probably not the first choice, but if they are 3.73, then the 200 has a great overdrive, and the first gear final drive should be fine as well. I dont know about the speedo, but kits can be had if they dont bolt up.
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jku72
1940 Chev
