Shelby305

I didn't wanna specify the type of race purposely, I wanted to know which would excel where, I kind of already knew but wanted to make sure thanks guys (y)

adidasUNT8

also if you plan on going FI like I am in the middle of doing... most people will not want the 4.10 gears because of lack of traction... I have 4.10's and will be switching out to 3.55s

JIM5.0

Very good point. If your final total gear ratio is too deep (rear gear time tranny gear you are in and considering the outside diameter of your rear tires), all you will be doing is spinning your wheels and getting nowhere while burning gas and rubber fast.


Speaking of 4.10:1 rear gears, I found out that with the TR3650 and 3.55:1 rear gear, you have the same total gear ratio as a T56 with 2.95:1 1st and 4.10:1 rear gear.

REDBOSS1

As many have said driver is big, I could not get the 4.10s to hook up well so I actually think my low end speed with 3.55 is just as good because they don't create as much torque allowing them to hook up. I had 3.55 in my car with and intake and tune, then I went to 4.10. While the 4.10 was slightly better on the 0-60 when I was NA I went back to 3.55 when I got supercharged. I think 4.10 is fun but 1st gear is worthless as they did not hook up what so ever for me.

onederful100

i could spin the tires when i was stock with 3.55's
now i got 4.10's with the Whipple, and spinning the tires is much easier
i can also feather the throttle a bit in first and feather it a little less in 2nd and it launches pretty well.
my tires are not stock, they are 28.5" tall and 295's in back, so that helps with the traction
i have not run it with slicks, but that would definately get better traction
and my suspension is stock also, so suspension work would make it better also.
so there are many variables to this trick question.
too much power is better than too little.

Norm Peterson

Not enough data.

Depending on what you pick for a speed range, the car with 3.55's and the tranny in any particular gear can briefly pull away from the 4.10 car once the 4.10 driver has to upshift to the next higher gear.

The car is ultimately aero drag limited at just above an apparent speed limiter setting. Meaning that the 4.10 car can still pull the same top end mph (and would actually top out a couple of mph or so above the 3.55 car without any limiter). But the 3.55 car in 4th would (relatively speaking) run away and hide from the 4.10 car from 125 on up (where you'd need to be in 5th).


Norm

wcgman

You guys are overthinking this. So the OP wasnt specific about environmentals, driver who has a full vs/empty colon, etc...but pretty sure they were very simple.

All things created equal, 4.10s are faster over shorter distance, but top speed will not be as high as the 3.55 over a longer distance. If you just hot rod around town, get 4.10's. They are more fun IMO. If you drive the open road a lot, go with 3.55's.

Norm Peterson

Maybe. But it can't be helped when the problem is under-defined from the get-go.


If you go through the math - not just the theoretical speeds in gear at redline, but including the effects of drag, power curve, and a few other things - you'll find that there isn't a lot of difference between 3.55's and 4.10's as far as top speed is concerned. And the 4.10 car would actually be a little faster in the absence of any speed limiting.


Norm