BossV8

Hi,

I have just installed Harry's LapTimer on my iPhone and I plan to use it on my next session.

I am now entering data about my car. It is a C5 (not Z06) with regular gear box and a 3.90 rear diff. The LapTimer is asking for each ratio per gear.

I have entered :
1st - 2.66
2nd - 1.78
3rd - 1.30
4th - 1.00
5th - 0.88
6th - 0.50

Could you confirm it is right or direct me to a chart? I don't find one.

Many thanks.

BossV8

ttt

BossV8

Anyone? Or a link to a chart?

Helen09

I have just installed Harry's LapTimer on my iPhone and I plan to use it on my next session.

Woods

If its an M6

2.66
1.78
1.3
1
0.74
0.5

BossV8

Yes. I thought the 3.90 rear diff would change the value but we are talking gearbox here.

frcspeed

How do you like Harry's timer, and also how do you like the 3.90's. I have an frc with the same tranny that I thought of changing the rearend to 3.73, 3.90, or 4.10's

BossV8

I love them both.

About 3.90 : it is the way the corvette should have been sold in Europe as we got lots of little roads. At this time I had to remove my 3.90 as it was "singing" and I cannot wait to get it back on the car!

geerookie

Rear gear with have no affect on the ratios for the trans that you need to enter. Only affects final drive ratio.

BossV8

As I have to open my rear diff and gear box to see what is the cause of the singing, I am thinking to replace 5 and 6 gears for smaller ratios. What do you think? Anyone did this?