in second i get 70 mph 3rd 105 and 4th 150. i thought that 4th was good for 141 or so. what gives? my speedo aging or what(joke)? what do you guys get in these gears?

 

Those speeds do seem high. What is your rear tire size?

Checkout www.rx7.com

The have a table listed that gives all the speeds at redline with different rear end gears. I think it is posted with the differentials.

 

i have 50 16s all around.

 

I haven't checked the actual stats. But, I have been clocked @102.54 in 3rd at the local 1000' track.

Also, when I didn't have 5th gear. A friend and myself went 150mph in 4th. We both saw the speedometer and were like ****! I too thought that 4th topped out around 145mph.

I run stock size 225/50/16's.

 

I have had mine to 150 in 4th. It was maxed out over 8000rpm. but it was there.