How much power do you plan on putting through it?

 

~600rwhp for now, would like to get 700rwhp in the future though. It's 100% street driven daily driver. I like firm shifts but nothing that will upset passengers or could cause damage to the trans. I don't think I'll be locking the converter at WOT.

Also can shift firmness be adjusted with the tow/haul button? If so, it would be nice to have a softer shift in normal mode, and then firmer shifts in tow/haul mode.

 

I'd drill them all to .096 for that kind of power and then reduce shift pressure in the tune as required. I found on my last two transmissions that drilling the holes bigger didn't make a huge difference anyways.

With HPTuners you can have two entirely different transmission setups in normal and tow/haul. You separately set up either of them for shift pressure, solenoid speed, TC lockup and MPH or RPM shift speed in any gear. It could shift like a butterfly in normal and like a bull in tow/haul.

I think this is the best part of tuning... getting the transmission dialed in.

 

I was gearing up to ask a similar question... glad this thread was started.

 

Other than the tune, I have heard that if I am running a smaller diameter/higher stall torque converter that it will help to soften the shifts up a bit (over a stock converter). So the question that is plaguing me is: What relation to the shift firmness does the Torque Converter play?

This may be broad and full of jargon, but I haven't seen a definitive answer concerning this that I can wrap my brain around. Thanks!

 

I can't see a torque converter softening the shift if the pump is still pumping fluid at the same pressure. However, it will shift at a higher engine RPM at lighter throttle since it is referencing speed for shifts. But softer, no.

 

A higher stall / looser converter will soften the shift feel, in fact if you read the directions in the transgo kits for the 80E is specifically mentions this.


Read Step 6

https://www.performancetrucks.net/fo...d.php?t=507451

 

Suburbazine, can you post up how your doing this, I can not get my 80e to stay locked dueing shifts...Thank You!!

 

You'd have to ask Geoff at EPS, he's the one that tuned it that way at my behest. It's currently set to engage lockup at 20MPH when shifting into 3rd, then shifts to 4th at 32MPH if throttle angle is low enough.

This is also in a 60E tune since I used Frost's 2-relay adapter, so 80E programs may be different.

It's nice being able to putt-putt around town at 1000RPM and not disturb the peace lol.

 

Enable shift lock.