having problems shifting 2,3 gear

having problems shifting 2,3 gear at 6300rpm redline @ 6700 and shifting 2,3 at 68mph and moved the rpm to 6000 and to shift at 65mph and it shift's good i have 07 chevy nbs with a 4l65e 3800 pi single disc stock oil pan fully built tranny i want to know what's the problem

is it not shifting at 6300? what is it doing

Quote:

---

Originally Posted by Quik

is it not shifting at 6300? what is it doing

---

it's not shifting

so it doesnt go into 3rd?

Quote:

---

Originally Posted by gTeran1

so it doesnt go into 3rd?

---

yea

Quote:

---

Originally Posted by redrum

yea

---

im a noob,but i would say maybe the shift solenoid?

The 2-3 gear shifts in the 65e tend to not like really high RPM shifts cause the pump can't keep up. I would definitely add the High Output Pump Slide spring. It will allow to keep pump pressure up and hold your line pressure for the high RPM shift. Another thing you can do to help this problem is to use the Sonnax Forward/Reverse Abuse Bore Plug (It prevents fluid pressure loss and fluid bypass for the 3rd gear shift) and the Sonnax Heavy Duty 2-3 shift valve.

Quote:

---

Originally Posted by txarkitekt

The 2-3 gear shifts in the 65e tend to not like really high RPM shifts cause the pump can't keep up. I would definitely add the High Output Pump Slide spring. It will allow to keep pump pressure up and hold your line pressure for the high RPM shift. Another thing you can do to help this problem is to use the Sonnax Forward/Reverse Abuse Bore Plug (It prevents fluid pressure loss and fluid bypass for the 3rd gear shift) and the Sonnax Heavy Duty 2-3 shift valve.

---

thanks for the help