Anyone else run a Midwest converter? I think I may be having an efficiency issue. the car is an 02 Z28, cam only, built 4L60e, 3.42 gears and 274/40 R17 BFG drag radials. It turns 5600rpm through the traps at 116mph. I was thinking the rpm was a little high for 3.42 gears. On the Hp tuner scanner you can see it flash to approx 2600rpm and I am reading the trap rpm off the scanner as the tach in the dash is inaccurate of course. What do you think? I was thinking a yank ss3600 may be in the near future.

 

That seems pretty close to being where it should be, How does it feel on the top end, does it lay down at the end of the track??

 

It feels strong and its consistent. I am debating on a gear change to either 3.73's or 4.10's. the motor makes good power up high. I changed the shift points from 6000 to 6500 and picked up an honest 2.5 tenths with no other changes. I have a friends car that runs very similar et and mph with same gearing that traps around 5400 rpm. He runs a Yank.