93GTDIN, first off is your car stock? I'll assume manual, for the sake of argument. If it's stock and manual then get the 3:55's. Reason being is that with 4:10's you'll run out of gear almost instantly, and your car wont have the torque to support them. The engine needs something to push against. Think of riding a 10 speed bike, if you put it in 1st gear and pedal as hard as you can you will notice after a few revolutions you wont be able to go any faster and you'll feel like your not pushing against anything. If you do the same thing in 3rd gear you'll notice that you can take off almost as fast but not quite. You'll also feel like your pushing alot harder, but going alot fatser befor the gear runs out. So if you have the stock motor you don't have the torque to utilize 4:10's and you'll be shifting more often than you need too, lossing you a lot of time and speed.
rtz, the person who sits at the light spinning will not be able to catch you unless you screw up down track. Gears don't give you that much of an advantage that you'll be able to catch someone who is 2-3 car lengths ahead and still accelerating. Thats a lot of ground to make up considering they have the same power you do. Hope this helps more than it confuses people.
Phantom
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1983 GLX Convertible 5 Speed, bored 30 over, Shaved knife edged crank, Internally balanced, TRW Flat Top Pistons, 11:1 Compression, Custom ground cam, Ported Windsor Jr. Heads, Manley Valves, Comp Cams Roller Lifters w/ Dual Springs, Fel-Pro Gaskets, ARP Stud kit, 600 CFM Edelbrock Performer Carb, Edelbrock Torker 2 Intake, Mallory Ignition, Canton 7qt Oil Pan w/ trap doors windage tray and baffles, Hooker Super Comp Headers 1 5/8" primaries & 3" collectors, Flowmaster American Thunders, K&N, M
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