Did you guys see this

[Matt]

Epiphany .... thought it is worth noting that 3.7L owners with the NAG1 might be better suited with 4.10s; i forgot the trans gearing was steeper already for 3.7L owners. I'll put together a quick table to see how the final drive ratios work out.

Edit: heres a spreadsheet with final drive ratios
https://dl.dropbox.com/u/24438380/Gears.xlsx

You can definitely see why the jump in performance from 3.07 to 3.73 for the V6 guys is well worth it! That's like the 4.7/5.7L guys getting 4.56s BTW

Based on this information, I still think the next gear option for our platform needs to be 4.56s since the majority of owners who will do this mod aren't concerned with a 200 RPM difference on the highway, and 3.7L owners have a good option already with the 3.73s.

Then, coming out with 4.10s would be a good gear for 3.7L guys to go a bit more extreme with their gears and the 4.7/5.7L guys to be a bit more conservative with theirs.

Also, don't make the same mistake most people make by comparing the worst OEM gear option to the next step. Think about it this way... whats the best OEM gear option available in your platform? (in this case, 3.73). So now pretend you're not "handicapped" already and have 3.73s.... what gear ratio would you like to have?

I need to take back what I said here.

What I said only holds true when you're dealing with the same trans gearing. It completely escaped me last night that the 3.7L owners who have 3.07 (or 3.55 option) gears stock have completely different trans gearing.

3.07 in the W5A580 actually has (practically) the same final drive gearing as 3.73 in the 545RFE.

So, you guys with 3.07's are not "handicapped".