Tranny and TC questions?

[tonypagnano]

Ive got a 99 7.3 with the 4r100. This tranny is a 4 speed correct? (including overdrive) my question is i feel 4 "shifts" so can anyone help me out as to when i should feel my torque converter lock up? My tranny is a little built up but i want to get a BTS. I would just like to know a little more about mine for now. Also, when i do 4wd launches the tranny will like go in and out then back into 3rd but be at like 1100-1200 rpms, but im not sure if that is the torque converter not sure to lock or not? the OD light does flash but once i shut the truck off and restart it the tranny shifts smooth again. Sorry for the long post but i just can't seem to understand this transmission yet thanks guys

[Hank]

I feel my TC lock up. Does feel and look (tach) like another gear.

[tonypagnano]

Where abouts in the mph frame do you feel this? i know it might be a little different because you have 35s. Driving normally does it lock right before over drive or after shifting second?

[sea71]

Factory locks TC between 3rd and 4th. Feels just like a gear shift.

[tonypagnano]

so it locks before overdrive? overdrive is technically 4th gear right? thanks for the quick responses guys

[sea71]

Originally Posted by tonypagnano

so it locks before overdrive? overdrive is technically 4th gear right? thanks for the quick responses guys

Yes sir. Lockup before OD.

[Hank]

Thanks Shane. You know more about my tranny than me! Ever install a TW chip?

[sea71]

Originally Posted by Hank

Thanks Shane. You know more about my tranny than me! Ever install a TW chip?

I know just enuff to get me in trouble.

[tonypagnano]

haha, shane have you ever dynoed your truck if you don't mind me asking? i have pretty much the same mods as you and i just havent been able to get on a dyno yet. Im hopin to see like 300hp 600 ftlb but you never know