I can say I do know a lot more people who gave up 3.73s for 4.10s than those giving up 4.10s for 3.73s. Don't get me wrong, I was dead set on going with 3.73s myself for quite a while. But I also realize, that if you're a pushrod motorhead, 3.73 is probably the way to go because of the lower hp to rpm peaks these engines make which still instills in so many of us to not go quite as high with gearing against something a little higher. I can say I've been guilty of not allowing my modular V8 the gearing that would match the higher hp/rpm curve that these engines deliver upon. That changed when a friend of mine showed me that when running 4.10s at 55-60 MPH in fifth gear, you could drop to fourth and be right into the start of the optimal hp/rpm curve. With 3.73s, you're still a tad below the curve, drop to third and you're near the top of the curve which wasn't bad but still two gears down. With stock gearing, you HAD to drop two gears to hit the low end of the curve. As for what everyone paid, I'm sure that the difference in the price between the two gears wouldn't exceed 20-30 dollars at an average total install cost of around 600-700 dollars (including gears and all!). Pushrods start loosing maximum power around 4500-5000 RPMs where the mods are right in the middle of their maximum power band. Mods don't start loosing power until around 5500-6000 RPMs (2V) and add about another 500-800 RPMs for the 4V DOHC modulars. Sure, an MPG or two can be lost at highway speeds, but as we all know, ya gotta pay to play! I for one will not regret going with 4.10s, especially when the next 'ricer' comes pulling up with his 'fart can' and thinks he wants a piece of an "American Icon" AKA The Ford Mustang!joshheat25 said:Everyone who has 4.10's says oh they are the optimal gear, minimum gear you should get, but everyone who has 3.73 says that the 4.10's are too much gear! Wel it is obvious not everyone is going to like 4.10's but what are the pro's and con's to having them! Obviously one pro is improved acceleration and more multiplied torque! What is everyones opinions and how much did everyone pay to have them installed I cannot decide between the two thanks.
I got 4.56s in my 98 auto,and its not too bad at highway speeds.If I remember its about 3000 rpms @ 70 mph.joshheat25 said:Yea what does everyone w/ 4.10's in an auto think about highway rpms??
when i am going 50-60 i drop down to 2nd and haul ass.edbo said:That changed when a friend of mine showed me that when running 4.10s at 55-60 MPH in fifth gear, you could drop to fourth and be right into the start of the optimal hp/rpm curve. With 3.73s, you're still a tad below the curve, drop to third and you're near the top of the curve which wasn't bad but still two gears down. With stock gearing, you HAD to drop two gears to hit the low end of the curve.
Dude, You're SICK!shonoff said:I got 4.56s in my 98 auto,and its not too bad at highway speeds.If I remember its about 3000 rpms @ 70 mph.
spikeGT_99 said:gear calc oh and by the way, maybe this will help you make up your mind too
Yup, for forced induction they are the standard. For Normally Aspirated, their better for getting blown as in 'blown away'.Evenflow said:Aren't 3.73's better for being blown?
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