4.88 Gear Manufacturers?

[guruerror]

Thanks for the additional info...I'm on Trail Duty's site now.

As for installation...I've had my local dealer to all my work so far. They're kind of a niche dealer, they're all Corvettes, Hummers, and GMC trucks. They did the install for everything in my first post (minus the CIA, plus an oil change) for $1,600...and that included some custom work on the Flowmaster to keep it up under the truck like the stock pipes.

I hate to sidetrack my own post...BUT, after doing some more reading on the forum I find myself torn between 4.88s and 4.56s. I ordered the Superchips Cortex 2950 to reprogram the truck for the tire change and as a prep for the gear change, but I'm thinking that maybe the 4.56s would be a better pick for me.

I'll do some more research and perhaps open another thread once I can better articulate my questions/reasoning.

Thanks, Orange, for the Trail Duty link.

[OrangeCrush]

I can only tell you my experience. I installed 4.56 gears the first time I installed 38's.

Now on this H2 with supercharger also installed, I'm going with 4.88's. I did the 56's last time and to be honest, even with a supercharger, I needed just a hair more. (thus why I'm going with 88's this time)

In either case, you'll see a big difference... I was just telling you from experience.


Mark

[guruerror]

I went with the trailduty.com 4.56...

...more info regarding 'my gears' and my performance/mileage results can be found in my other post.

http://www.elcovaforums.com/forums/s...ad.php?t=38624

Thanks for your feedback!

[OrangeCrush]

Originally Posted by guruerror

I went with the trailduty.com 4.56...

...more info regarding 'my gears' and my performance/mileage results can be found in my other post.

http://www.elcovaforums.com/forums/s...ad.php?t=38624

Thanks for your feedback!

Actually, I just did the same.

Yesterday I ordered a set of 4.88's from Summit. Even with the more expensive gear set (4.88's as opposed to 4.56's) it was cheaper to buy them from Summit plus I couldn't get trail duty to answer the phone.

Unfortunately the shipping date isn't for another almost 3 weeks so I too ordered from Trail Duty.

I did however buy the 4.56's because I'm 99% sure I'm doing the diesel conversion and the 4.56's will bring the truck right back to the stock gear ratio with my tires.


Mark

[guruerror]

I'm saving my diesel conversion for 100,000 miles.

[OrangeCrush]

Based on my current mileage, (50K) I'll put the other 50K mileage on in roughly 2-3 years.

Based on fuel savings of 4700 per year, I'll have saved well over 10-12K by doing the conversion now... almost enough to pay for the labor.

Mark