The Juggernaut shop truck build

Evan@InglewoodTrans

yerp
Vendor/Sponsor
Aug 5, 2010
3,118
65
48
40
Western MA
May I ask why you guys are using an allison instead of something that doesnt defuel? Also why not use a lighter 9" rear?

Considering building Allisons is our bread and butter using anything but an Allison wouldn't make much sense for us. It will give us a opportunity to test our new parts and ideas at the highest levels. It's never going to be a full blown race trans but we don't have an issue getting them to shift how we want and hold as long as we want when everything on the truck is happy. This truck is for us to learn from. If I wanted to squeak everything out of it there would be a TH400 and few other changes but using parts combinations customers don't have we don't learn anything beneficial.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,645
5,785
113
Phoenix Az
My Allison doesn't defuel at WOT, just around town at part throttle. Shifts smoothly for DD, but puts the power down at the strip.

I didn't disable the defuel, it just stopped defueling at WOT after it was built. But I'm only at 660 HP. Do they defuel again when running a zillion HP?

Sent from my FlashScan V2

if you have smooth, stock like shifts at WOT, its defueling. if you didnt, that 3-4 up shift would be rock solid and feel like you hit lock up in a cummins. been there unknowingly years ago....
 

DAVe3283

Heavy & Slow
Sep 3, 2009
3,724
292
83
Boise, ID, USA
if you have smooth, stock like shifts at WOT, its defueling. if you didnt, that 3-4 up shift would be rock solid and feel like you hit lock up in a cummins. been there unknowingly years ago....
The 3-4 shift is hard at WOT, and the log shows full fueling. It does defuel the 1-2 sometimes. So why did it stop defueling after the build? I didn't change the trans tune.

Sent from my FlashScan V2
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,645
5,785
113
Phoenix Az
The 3-4 shift is hard at WOT, and the log shows full fueling. It does defuel the 1-2 sometimes. So why did it stop defueling after the build? I didn't change the trans tune.

Sent from my FlashScan V2

You had to have changed something in the ECM tuning. be careful with that harsh shift. i have twisted splines in my hub from it....
 

kiwilml

Member
Nov 4, 2015
454
0
16
if you have smooth, stock like shifts at WOT, its defueling. if you didnt, that 3-4 up shift would be rock solid and feel like you hit lock up in a cummins. been there unknowingly years ago....
So if the 3-4 shift is the only one that is softer that probably wouldn't be in the tuning?
 

Evan@InglewoodTrans

yerp
Vendor/Sponsor
Aug 5, 2010
3,118
65
48
40
Western MA
Lots to do but its headed home.
 

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TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,598
1,847
113
Mid Michigan
I think the update makes all the pics turn to "landscapes" instead of "portraits". Easy enough to turn the laptop 90*. :hehe:

Everything looks great so far, Evan!
 

Evan@InglewoodTrans

yerp
Vendor/Sponsor
Aug 5, 2010
3,118
65
48
40
Western MA
Joe Kutchey and I got so busy with shop work and growing the businesses it's been sitting. It's a team effort at this point but Joe fell in love with it wanted to buy it from me so he did :)