finally_got_it

i am wanting more acceleration off the line and i have been asking around here and have been told both 3.54's and 3.73's will do the trick... how hard is it to find a set of 3.73's, and how hard are they to install...lastly will 3.54's give me what im looking for and better fuel economy or to really feel a difference is 3.73 the ony way to go?

BlackC6LS3

I went from 2.59's to 4.10's are never looked back. One of the best things I did.

gator79

I went with 3.75's in my 93 auto and love it 4.11's are to much for an auto if you plan on doing any highway driving. I do about 2800 at 80mph with 3.75's

vader86

You cant do this rear end work yourself, you'll have to find someone to do it for you if its a gear/pinion change.

This is not a job for a newbie to try.

Kool88vette

Tom Piper

If you're looking for someone to do a ring & pinion setup, Ikerds (a supporting vendor in the list on the left) is a good source.


Tom Piper

BlackC6LS3

I've put about 5K miles on with the 4.10's and the highway isn't really a problem.

Casethecorvetteman

4.10 is too short on a stock engine anyway, it may feel quicker than a 3.73 set, but i seriously doubt it would be.

I went with 3.33:1 cause i drive my car on the highway everyday, and not only did it make it alot quicker then the 2.59s, it also made it alot quieter at 65mph, no drone what so ever

finally_got_it

I looked at Ikerds, 1 think ive decided on 3.73's..i dont do a lot of highway driving..heres the million dollar question order just ring and pinion gears and pay a shop to put it in OR just arder a whole new pumpkin ready to bolt in for about 1300 plus shipping? Also im thinking i would need a new speedo gear but it doesnt show any for a 95 at ikerds just up to a 93? do i not need one?

Z01#316

sent u a PM

Tom Piper

I've done several ring-&-pinion setups.
Here is my opinion on it -- others may disagree.
Ring and pinion setup is 80% science and 20% black art.
Just setting pinion depth and backlash by the book may not make it quiet.
Someone with lots of experience will be able to get it quieter -- especially for high numerical ratios.
Ikerds knows how to do that, does the shop you select know how?

Tom Piper

Casethecorvetteman

You dont have speedo gears in your 95, if indeed that is what youre talking about changing ratios in. It has a transducer and reluctor wheel setup.

Youll need to reprogram the PCM for the speedo calibration, and also the auto transmission shift points will need to be recalibrated to suit the new ratio, cause in a 95, these are controlled by the PCM on a TPS% Vs MPH arangement.

If you leave it all as it is, your speedo will say youre going alot faster than you really are, and youll rack up more miles on the odo that youre not really doing.

If you just change the speedo calibration, your auto trans will shift very late at low throttle positions, and wont shift up at all beyond a certain point, cause youll reach the rev limiter long before youll reach the MPH setting for a given shift.

If you can get a hold of TunerCat and an ALDL cable, you can download the .bin file from your PCM, email it to me, and i will set all that stuff for you if you like.

P.S. If i could get into photobucket i could show you the tables and what it all looks like from TunerCat

rickneworleansla

What Torque Converter and tires are you running or plan on running? How much power is your engine putting out or will put out? I would plan for the complete package and it's intended purpose. You don't want traction to become an issue.

finally_got_it

i have the stock converter and i have 10.5 275 40 18's on the back..my engine is stock except for slp cold air kit, magnaflow mufflers, and msd coil

vader86

The LT1 stock TC is about 1500rpm, it needs more like 2400rpm.

This is a worthwhile mod if youre unsure about gears right now, the effect on the car is the same, and it doesnt cost you in hwy mileage.

Kool88vette

I'm getting 3:54s. Do a search and you will get lots of info. I was ready to get 3.73 and after some research figured out that 3.54 were best for me. I have the 700R and use my Vette for a DD and race it about twice a year. What are your goals? Racing or driving to work, it depends on a lot of factors. 3.73 might not be good for long trips on the freeway but might be good at the drag strip. Something in the 3.50 range is usually good for a DD with no major mods.

finally_got_it

cool, thsnks..where can i get a tunercat and aldl cable?

GeosFun

I had 3.73's with my automatic and hated them. My car is maily a DD. I got tired of listening to the engine revving just to stay ahead of 18-wheelers. Now I am very happy with 3.07's.

If your carrier is a D36, you might want to just go with the converter suggestion for now. If you get serious about drag racing, you will break the D36

finally_got_it

ok...after much deiberation i think i am going to go with 3.54's and a 2400 rpm stall converter. Once those are in ill see how the torque is and go from there. Case ty for offering to help with the reprogram! I am going to order the whole pumpkin from ikerds, but where can i get a good stall converter from?

jsavoy

Lots of companies out there, I bought mine from Fuddle Racing and I'm very happy with it (CF sponsor-under transmissions). Sent you an e-mail as well...