6.7l tranny limits

dieseljunky22 · Jun 7, 2014

hey guys just bought a 2012 6.7l today it came deleted and with a Spartan tuner. coming from the duramax to this ford we all know how poor the Allison trans is after stock. running a small tune on this transmission right now just curious how much room i have to play before i start tearing stuff up. also curious pros and cons of this Spartan tuner haven't found much to read on the tuner. i see a lot of guys are running the mini max just curious how comparable this is to the h&s I guess to sum it all up. asking what you guys have run into with and who's tried this stuff. and what your personal experience was with this stuff.

bigrpowr · Jun 7, 2014

dieseljunky22 said:
hey guys just bought a 2012 6.7l today it came deleted and with a Spartan tuner. coming from the duramax to this ford we all know how poor the Allison trans is after stock. running a small tune on this transmission right now just curious how much room i have to play before i start tearing stuff up. also curious pros and cons of this Spartan tuner haven't found much to read on the tuner. i see a lot of guys are running the mini max just curious how comparable this is to the h&s I guess to sum it all up. asking what you guys have run into with and who's tried this stuff. and what your personal experience was with this stuff.

these trans are solid to 700 , so far. not sure how long they will live over 700 , there just aren't too many at that power too find out. tune only , as long as the trans tuning is right it should be just fine for a very long time.

sledhead_24_7 · Jun 7, 2014

The tranny is very tough, it will handle everything you can throw at it. They Ford transmission is a very tough unit.

Spartan is a good product, they actually tune the transmission for the specific hp tune.

The reason you see lots of H&S is sometimes Spartan is slow on meeting demand.

If you have the 200hp war hammer tune, try it. That one is my favorite.

dieseljunky22 · Jun 8, 2014

Right on the guy I bought it from said something about a 200 tune just when I drove seemed like it shifted kinda funny so didn't want to hurt anything seeing how I just bought it lol

UpstateDieselGuy · Jun 8, 2014

Part of the popularity with h&s units is their MCC software which let's you or a professional tuner create unique tunes for personal preferences, mechanical upgrades, etc. another plus is that it work across all three diesel truck platforms, within reason, where as spartan is ford specific. It's also limited to their tuning only, not that it's a bad thing at all!

Chris

sledhead_24_7 · Jun 8, 2014

dieseljunky22 said:
Right on the guy I bought it from said something about a 200 tune just when I drove seemed like it shifted kinda funny so didn't want to hurt anything seeing how I just bought it lol

Call them ask for Mick and have him build you a new tune to solve the rough shifting. He did that on my 11 and way way better.

Raptorgabe · Jun 8, 2014

my 6.7 is deleted but I used to have a dmax so im scared to even turn this chip on its on stock deleted as of now I would be ok to turn it up without scrwweing **** up

johnp115 · Jun 8, 2014

Just YouTube H&S 6.7 breaking point. Pretty sure they got to 800-900 hp spraying on stock trans before it slipped. Hard to recal I didn't fully watch it so correct me if I'm wrong.

But tune only you shouldn't worry about the trans

Ad8 PRODIGY · Jun 8, 2014

johnp115 said:
Just YouTube H&S 6.7 breaking point. Pretty sure they got to 800-900 hp spraying on stock trans before it slipped. Hard to recal I didn't fully watch it so correct me if I'm wrong.

But tune only you shouldn't worry about the trans

a dyno run is also a lot easier on a trans than day in and day out driving

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johnp115 · Jun 8, 2014

Ad8 PRODIGY said:
a dyno run is also a lot easier on a trans than day in and day out driving

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Yes that is true, but for a stock trans to even hold on the dyno once at 250-300+ Hp above just tune only is still saying something.

Ad8 PRODIGY · Jun 8, 2014

johnp115 said:
Yes that is true, but for a stock trans to even hold on the dyno once at 250-300+ Hp above just tune only is still saying something.

true

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ChattyCathy · Jun 8, 2014

Ad8 PRODIGY said:
a dyno run is also a lot easier on a trans than day in and day out driving

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You don't know Bentley...that trucks has sled pulled and absolutely hammered on.

bigrpowr · Jun 8, 2014

ChattyCathy said:
You don't know Bentley...that trucks has sled pulled and absolutely hammered on.

Yeah but it's only 600-625 horse.

Raptorgabe · Jun 8, 2014

so I can turn up my h&s and not worry about it

ChattyCathy · Jun 8, 2014

bigrpowr said:
Yeah but it's only 600-625 horse.

Ya.... I just view that truck as a win for the tranny debate with all the dyno pulls sled, tires, and the way he drives it.

gfulton · Jun 8, 2014

Look at Kalebs power level and its still holding......

Dena6.4 · Jun 8, 2014

4EverBoosted1 · Jun 8, 2014

Mine stocker is still holding 900hp of daily driving... Not sure how much is left in it though.

WHY NOT · Jun 8, 2014

Raptorgabe said:
so I can turn up my h&s and not worry about it

Yup. You won't make enough power on just a tuned and deleted truck to break the transmission. Max on the stock turbo is about 480 hp at the wheels, dyno numbers may vary.