Stage 4 Suncoast installed...

Angelic0- · 10-02-2008, 10:08 AM

Launched it in RWD after installing the Suncoast...

Found it to be a little more "extreme" at shift points, this is normal... right :?:

I hesitated a little when it started wheelhopping..... but here's a video

YouTube - '06 LLY Duramax Launch

**BigRedChevy** · 10-02-2008, 10:28 AM

Yes it will be a little firmer shifts, but it will shift real hard until the tranny re-learns.

Angelic0- · 10-02-2008, 10:32 AM

Quote:

Originally Posted by BigRedChevy

Yes it will be a little firmer shifts, but it will shift real hard until the tranny re-learns.

Well... it was shifting real hard first.. and then it smoothed out... guess that's the relearn, right :?:

Next up is a EFI live... and Silverline Duals

Then maybe new internals

**BigRedChevy** · 10-02-2008, 10:37 AM

Yes that is the re-learn. It may take several times of stop and go before it fully learns. It also has to do this when adding power to it.

Angelic0- · 10-02-2008, 10:39 AM

Quote:

Originally Posted by BigRedChevy

Yes that is the re-learn. It may take several times of stop and go before it fully learns. It also has to do this when adding power to it.

That's exactly what i did, a few stop and go's... as i felt it go smooth i went harder on the acceleration, but i find it to be still a little hard shifting, hope it's normal

aggar · 10-02-2008, 12:11 PM

2 runs through all gears at 1/4, 1/2, 3/4 and full throttle should help and need to do it in T/h jode as well. Do it with mine and its good. What converter did you get?

**BigRedChevy** · 10-02-2008, 03:03 PM

Mine actually feels more firm with a stock tune in it than what it does with a tune loaded. It will still smooth up some in the next few days.

Angelic0- · 10-02-2008, 11:20 PM

Quote:

Originally Posted by aggar

2 runs through all gears at 1/4, 1/2, 3/4 and full throttle should help and need to do it in T/h jode as well. Do it with mine and its good. What converter did you get?

packaging says AT 545 TC 290 ? does that mean anything ?

Someone told me these suncoasts had a weak link with the billet input flange ?

is this correct ?

Angelic0- · 10-02-2008, 11:26 PM

oh yeah, and after the install, the truck is a handful to drive at these conditions when shifting :lol:

**IdahoRob** · 10-03-2008, 08:25 AM

The 1056 comes standard with the SC Stage 3 and 4. That is what you have unless you ordered something special, or you dealer changed something.

Billet input flange? Stage 4 uses your stock allison shafts unless you ordered a billet shaft. Only ever heard of one billet breaking and that was a high HP truck that had a tie up on the drag strip.