What's ya'll's normal cruising rpm? I'm turning about 4,200 rpms @ 80 MPH and @ about 93 mph I'm already turning 5k. Does that sound right for stock?

 

Sounds normal to fee for an AP2.

 

if that's normal I'd hate to see what 4.77s would be like on the highway. What do 4.77s top out at?

 

That is normal for an AP2. I was right around 4,000rpm at 75mph in 6th gear.

 

yep, same with me

4k @ 75mph
~4.2-4.3k @ 80mph

seems really high, but thats our gearing for you

My '06 SI sat ~3.5k @ 80mph
I hate seeing it half way up the tachometer just for highway speeds

 

80 mph w. 4.77 is about 5k rpm

 

5200RPM for an AP1 and 4.77's for me at 80mph

 

~4500 RPM at 70 for me.

 

so by my cals for an AP2 w/ 4.77s, @8000rpm in 6th you'd top out @ 157mph. with a hondata reflash setting the rev limiter to 8500...you'd be able to squeeze 167mph out of it. Not bad.

Stock it's looking like this (tire dia. set to 24.08):
@8k
1st:45
2nd:68
3rd:94
4th:120
5th:148
6th:183

http://www.apexgarage.com/tech/gear_ratios.shtml

 

A stock geared (4.10) ap2 tops out around 153. there is no way a 4.77 ap2 will top out at 157