Quote:

Place it in drive.
Accelerate;
1st to 2nd shifts at about 35/40 mph.
2nd to 3rd shifts at 65 mph.
It really labors and hangs until you hit 65.




How much throttle are you using?



Quote:

Of the 3 mods I did; valve body, accumulator spring, line pressue - which one mod, or combination there of, makes the late shifting point from 2nd to 3rd at 65 mph?





The VB mods you did will have no effect on upshift speed.
Tossing the accumulator spring has no effect on any shift.
Raising the line pressure will make the shifts later.


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