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TK0 600 ...#5008 w/ .64. The .64 OD will drop the rpm's down for cruzing, and helps gas milage with 3.55 rear end. Weekend warriers ,(you and me and most others)would only use the first four gears at the track . The other ratio's (.82) are for the serious RR guys . ...no gas mileage....little RPM drop. Most of these don't dive on the street......or they don't care about gas mileage...at all. They (.82) may also be running a heavy cam that may not like the .64 RPM drop. I was just talking to a guy about the 351w ....450 hp and below is street manageable ....above 450....it's running peaky....not good for the street. If you are below 450 hp then I believe .64 with 3.55 will work well.
All this is kinda gray.....I'm going with 351w 425hp tko 600 .64 3.54 rear
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