xviper

You can get the 4.57R and Comptech diff from both Rick's and Hardtopguy. Go to their websites to see what the cost is. You can find their sites if you click on the sponsor directory at the bottom of this page.
With a leased car, you would have to put it back to stock before you turn it in. Unless you don't want to tell them, but they'll figure it out soon enough once the next owner sees the speed compensator. Modding a leased car is always a bit tricky.

Stratocaster

Rick's car was a lease that he bought out. But still a lease when he did most of the work to it.

novatemp03

i have a mechanic locally to install the pumpkin but no one to set up the diff. who is stratocastor. does he have e-mail perhaps he would build and ship the pumpkin complete.

xviper

Look at his title under his username and look at his sig.

novatemp03

thank you xviper

stooken

Thanks!

It's obvious what the pros are but what are the cons of having these gears?

xviper

You will have a speedometer and odometer error if you don't use a speed compensator. If you have a speed compensator and you don't wish to remove the gears when you hand the car back, they will think you tampered with the odometer. If you don't take out the gears and do take out the speed compensator, they will know the next time they drive it, that you have something weird with your car because the speedo will be off considerably.
Hiway cruising will show 11.5% higher rpm than previously at the same road speed. Your hiway fuel mileage will suffer a bit as well.
If you drag race at the track, you will need an extra shift to finish the 1/4 mile.

I consider these to be minor issues and reversible when the car goes back.

bulldogs2k

correct me if i'm wrong, but hardtopguy only sells the 4.57s correct? who sells the 4.77s with comptech diff assembely?
A

stooken

Thanks for clarifying. Given the fact that I wont be taking this car to the track and primarily using it as my daily driver, would the gears essentially help me out in any way? I'm not looking to race the car but I wouldn't mind improving on a few things here and there.

I remember reading that the low end torque would improve which is awesome.

xviper

Daily driving will seem easier, with less effort from the drivetrain. It'll be easier to get the car moving due to the gearing. You will have to shift sooner, though.
"Gears" don't actually increase torque. They "multiple" via mechanical advantage. You still have the same power and torque. Gears just use it better.
In an extreme analogy, instead of having gears 1 thru 6, you will have gears 0.5, 1.5, 2.5, 3.5, 4.5, 5.5. It's like "slotting" all your tranny gear down a bit.