Gear ratio choice

[dredgeguy]

I am looking to upgrade the stock gears and would like to hear from the brotherhood your thoughts on going to 3.91 or 4.10's.
Car is driven aound town every chance I get and to the track maybe twice a year.
Thanks for the input.

[Gunny]

subscribed to this thread ... I'm interested also.

pros/cons of 3.90 vs 4.10 on nearly stock LT5 (porting & headers, not a stroker)

[efnfast]

The PO put 3.73's in my car. It drives good, accelerates good, gets decent mileage. Below 50 in 6th gets uncomfortable, but cruises on a flat ok. I have nothing to compare it to. -Steve

[FU]

There isn't much of a difference between 4:10's and 3:90's. In fact both use the same speedometer calibration.

[Jim Nolan]

I have 3:92 gears in mine. I was turned off by the 4:10 after riding in a vette with them. Too tall, but now I am able to use 5th in local traffic and still have something when I need it. I am also able to use 6th at 65/70 and it's smooth. Word has it that the 4:10 viper gears are now made in China. The down side is that the mileage is down because of it and the porting. I'm happy though.

[-=Jeff=-]

I did a 4.10 after talking to a couple people. I don't regret the 4.10 it is just a matter of getting use to it after having the 3.45 for so long..

[randy ransome]

I hope I'm not hijacking this thread but I've got a question.

My car will drive in 6th gear at 45 mph without any trouble, so I'm assuming I don't have stock gears?

It's turning about 1800 RPM at 70 mph.

[WARP TEN]

Originally Posted by dredgeguy

I am looking to upgrade the stock gears and would like to hear from the brotherhood your thoughts on going to 3.91 or 4.10's.
Car is driven aound town every chance I get and to the track maybe twice a year.
Thanks for the input.

Hi Charlie--
Nice to see you at BG. When I got my 93 in 1994 the first thing I did was install 4:10s and loved them. Best thing you can do for improved performance as the engine spools up more quickly, sixth gear becomes useful on the freeway and its not to pricey. Make sure your installer knows what he is doing. Marc and son Bob do them all the time and also install the speedo correction gears as part of the job (see his website www.zr1specialist.com). When I got my 95 last summer it was one of the first things I did, along with Corsa and Hurst shifter (which I also had done on the 93). Then of course, realizing I am not getting any younger, I had Marc do his 510 package over the winter.. But that is another project altogether. Hope that helps. --Bob

[PhillipsLT5]

I like my 4.10's
in 1/4 mile close to redline in 4th
in 1 mile, close to redline in 5th
in 1.5 mile I do need to shift into 6th @ 175 mph approx which is economy gear, car pulls slowly in 6th
Around town it makes 5th usable
On hiway still getting 22 MPG with secodarys removed, tacking about 2200 at 75 mph if I remenber correctly
Marc does have correct 4.10 speedo gear & I think it is different from 3.92 speedo gear

[GOLDCYLON]

Originally Posted by PhillipsLT5

I like my 4.10's
in 1/4 mile close to redline in 4th
in 1 mile, close to redline in 5th
in 1.5 mile I do need to shift into 6th @ 175 mph approx which is economy gear, car pulls slowly in 6th
Around town it makes 5th usable
On hiway still getting 22 MPG with secodarys removed, tacking about 2200 at 75 mph if I remenber correctly
Marc does have correct 4.10 speedo gear & I think it is different from 3.92 speedo gear

Phil did mark do your 4:10s ?