[solo379]

Originally Posted by rgordon212

it's NOT an ACERT engine, just a plain old c-15
It's got an autoshift 10speed and it's in an International....

It is an ACERT.
In October 2002 CAT stopped making "plain old c-15", and started to make "bridge", which was almost the same, but from what I've heard, worse version.
After October 2003, they started making ACERT(twin turbo)....

[TruckerChris]

I have the same engine as you along with those 3.36 gear but I have a 13spd. It's a fine gear setup to cruise through the midwest at 65+mph and still get good fuel mileage, but as soon I hit even the slightest incline, I lose a tone of speed and have to eventually shift. A couple weeks ago I was climbing cabbage with 43,000lbs and even a heavy hauler passed me... When I decided to run the west coast only, I'm going to regear this truck for sure.

[Musicman]

Originally Posted by rank

>I've never heard anyone brag about fuel mileage in a T2000 or one of those ugly aero peter cars either.

Okay, you asked for it: 6.9 mpg lifetime average in one of those "ugly aero peter cars".

[rgordon212]

Originally Posted by solo379

It is an ACERT.
In October 2002 CAT stopped making "plain old c-15", and started to make "bridge", which was almost the same, but from what I've heard, worse version.
After October 2003, they started making ACERT(twin turbo)....

Oh, really?????

I thought the ACERT motors said ACERT on the valve covers? My buddies 2006 Pete does, this one does not? I dont know, but I do know it gets shitty fuel mileage and does not pull worth a crap.

[rgordon212]

Originally Posted by TruckerChris

I have the same engine as you along with those 3.36 gear but I have a 13spd. It's a fine gear setup to cruise through the midwest at 65+mph and still get good fuel mileage, but as soon I hit even the slightest incline, I lose a tone of speed and have to eventually shift. A couple weeks ago I was climbing cabbage with 43,000lbs and even a heavy hauler passed me... When I decided to run the west coast only, I'm going to regear this truck for sure.

Yep, i have been running Oklahoma, Arkansas, Texas, Mississippi, and Alabama for the last month and am getting about 5.5mpg in this. I just got back home to the midwest today and averaged 7.1mpg from El Paso to Chicago

But again, the loss of power sucks bigtime.

But once I drop out of the 10th into 9th, it dont matter what I'm climbing it will hold it's speed.... guess this is typical with these motors...

All i know is when i was pulling 32K in the Pete, I could run in 13th and never have to downshift over many hills.

[mike3fan]

Originally Posted by rgordon212

But once I drop out of the 10th into 9th, it dont matter what I'm climbing it will hold it's speed.... guess this is typical with these motors...

it's more about the gearing and not the motor.

[rgordon212]

Originally Posted by mike3fan

it's more about the gearing and not the motor.

Yeah, it's a different world comming out of a 700hp Mech CAT/13spd/3.90's to a 435 ACERT CAT/auto-10/3.36, just got to get used to this pooch.

[didydriver]

i'm stlll wondering how you got a twin turbo with less than 500 - 550 hp on it... and if I was to go with a c15 twin turbo I would definitely go with the 1994 model

[firebird_1252]

Originally Posted by didydriver

i'm stlll wondering how you got a twin turbo with less than 500 - 550 hp on it... and if I was to go with a c15 twin turbo I would definitely go with the 1994 model

no such beast in 1994.. also theres many twin turbo trucks with a lot less then 500 hp

[solo379]

He has no idea, what he's talking about! Probably just a kid wannabe. In 1994 first 3406E was born, and first Acert (twin turbo) in 2004, 10 years later. I happened to have both of those "first born" engines in my trucks. 2004 is still running!