Re: 4.10 gears...not what I expected.
 

I'm gonna' go the OTHER way here, after I get the pipes hung - 3.45 -> 3.07, since I've lost some top end with the 4L60e. Tach is just a little high @ 70, and it will add up to less wear on longer trips, and less fuel to boot.

I think that 3.07 is my only option here.

I found it interesting to learn that the original track car had a 3.07 installed...

Re: 4.10 gears...not what I expected.
 

My exhaust is wide open after the cats. Headers coming soon.

Re: 4.10 gears...not what I expected.
 

Gear to gear at any rpm yes more torque with the 4.10's but.... speed in gears is now different and at certain vehicle speeds the 3.45 car is going to be in a lower gear than the 4.10 car therefore the 3.45 will effectively have more torque in certain speed ranges. Numerically taller gears will not make every car faster in every circumstance, gears should be chosen based on the cars power output, traction, intended purpose and driving style.

Re: 4.10 gears...not what I expected.
 

Would of been nice to see before/after dyno sheets
I still think you made a good move and only will compliment the rest of your future mods
You should now be at aprox 2200RPM @ 75MPH

Re: 4.10 gears...Are NOT for everyone
 

I understand the expectation given all the talk. But for those that do not understand the physics/math I thought a good time to confuse them more :D

Like LGAFF suggests.....if you want real seat of the pants feel of accomplishment.....ADD HORSEPOWER which is pretty easy on the LT5 :thumbsup:

The 410s do let you get 6th gear into play more often.

Re: 4.10 gears...not what I expected.
 

I think it is all just a personal thing. I loved getting my 4:10s on my 93 early in its life with me. I felt it really improved my normal around town driving and cruising on the highway. Gears were also one of the first mods I did when I got my 95. To me the car feels quicker. Subjective I realize. I like the usefulness of sixth gear now. It does make the tires spin more but new tires recently helped a lot with that. WARP TEN ran a 12.4/116 at BG this week (admittedly with Marc H driving) and he wasn't power shifting. Overall I am happy with the mod; sorry you don't like them that much. Lots of folks are perfectly happy with stock gears but I am glad I switched. --Bob

Re: 4.10 gears...not what I expected.
 

If you got 340 rwtq on a dyno in 4th gear you will still get 340rwtq in 4th gear, but at a different speed (lower). There is a trade off- obviously free power isn't created, it is just shifted around by moving the torque curve left or right with respect to rpm, speed, time etc.

Re: 4.10 gears...not what I expected.
 

But how does that square with having "18% more torque to the rear wheels at all engine rpm?" That statement tells me that if I was putting down 340 lb/ft at 4800 rpm with stock gears, then I'm now putting down 401.2 lb/ft at 4800 rpm. Am I oversimplifying or misunderstanding the statement?

Re: 4.10 gears...not what I expected.
 

You traded wheel spin for wheel torque........same horsepower. Your wheel spin dropped 18%...the guy you were racing just out ran you ;)
18% more torque to the rear wheels at all engine rpm is a true statement. The wheel spin drop at all engine rpm was not mentioned :D

Re: 4.10 gears...not what I expected.
 

Just hung up with Psychic Hotline. They said heated discussion on the way yup...

http://www.zr1.net/forum/images/icons/icon10.gif

This statement needs quantification, for starters...
And I think a more judicious use of the term "multiply torque" is in order.