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From: IF YOUR BIG DOLLAR PROJECT DOESN'T RUN 9'S OR BETTER ....BURN IT ! SHUT YOUR MOUTH AND GRAB A LANE ! CHICAGO IL. -------- HOME OF THE FASTEST STREETCARS BARNONE !
I paid $350.00 for my 3.73 ring and pinion. I then paid $200.00 to install them in a carrier that I had. It then cost me $400.00 to install the carrier in my car, grand total was $950.00.
in my supercharged cobra it's only $500 to upgrade the gears
sure... but who cares???
It's not insane. The Corvette is a completely different design - utilizing a rear transaxle. Comparing that to a Mustang is comparing apples to oranges.
I am thinking of changing to 3.73 or 3.90s What was the RPM differents and MPG? Have you ran 1/4 yet?
Difference between the two, both RPM and MPG (highway) should be about 5%. The larger gear might even "help" MPG a little around town, depending on your converter (i.e. not as large penalty for a looser converter) though it'll never be like the OE configuration. I'm planning on a driveline rebuild soon and am toying with the idea of swapping my 3.73s for 3.90s. If I wasn't going to have everything apart anyway I wouldn't seriously consider it though...
It is not a Corvette tax. I have thousands of dollars in just setup tools for just the C5/C6 differetials. We sell them for $1295 and it takes at least a day to go from start to finish on one. We replace all bearings, seals, clutches, and of course the ring and pinion. That is 8 hours in just the labor, not to mention the parts. Each clutch pack is over $100 the bearing are 100+ and you guys know what the Ring and Pinion sells for. The reason you cannot compare this to a Mustang besides the obvious is also numbers. There are a million + stangs out there where I don't know half a million get gears so they can sell them cheaper because they sell more. Now the the C5/C6 it is in the hundreds and the tooling for making these has to be spread out over the parts. I think it is pretty simple to understand when you look at it like that.
I paid $350.00 for my 3.73 ring and pinion. I then paid $200.00 to install them in a carrier that I had. It then cost me $400.00 to install the carrier in my car, grand total was $950.00.
I just picked up a set of 4.10s on Ebay brand new last night for 249.95 + $16 on the shipping. A local place (where pretty much every Vette shop in Houston brings their gear work) will do the install for $250 if I bring them the box. By doing the work yourself you can save a lot of money. By taking the box out myself I will be able to buy both HD output shafts.
Last edited by Cajundude; Dec 21, 2004 at 10:50 AM.