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Originally Posted by olddog
Rear Gear Ratio??
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When picking a rear gear ratio, its more like picking a rear gear - Tranny combination.
What you need to ask yourself is
1) What will be my cruising speed (mph) and what rpm do I want my engine running? This will determine final drive overall gear multiplication.
2) What overall gear multiplication do you want for 1st gear to get a good holeshot?
3) How closely do you want your gears spaced? This will determine whether you want a 4, 5 , or 6 speed tranny.
If you can answer all these questions, figure out what the numbers are, then they will determine which tranny / rear gear arrangement will be best for you.
In your case, I'd say either swap the TKO for a wide ratio toploader and keep the 3.5 rears, or switch to a TKO600 with 0.082 5th, again keeping the 3.50 rears, but obviously that's something you need to decide for yourself.