C15 Questions....... step inside!!!
#11
11-17-2008, 01:50 AM
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)....
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#12
11-18-2008, 09:51 PM
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.
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#13
11-19-2008, 03:13 AM
Okay, you asked for it: 6.9 mpg lifetime average in one of those "ugly aero peter cars".
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#14
11-20-2008, 08:50 PM
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.
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1999 Freightshaker FLD120.... my 1st baby 2005 Pete Low and Mean 2005 9400i Cheap and making money
#15
11-20-2008, 08:53 PM
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.
 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.
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1999 Freightshaker FLD120.... my 1st baby 2005 Pete Low and Mean 2005 9400i Cheap and making money
#17
11-21-2008, 02:59 AM
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.
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1999 Freightshaker FLD120.... my 1st baby 2005 Pete Low and Mean 2005 9400i Cheap and making money
#18
09-21-2015, 02:21 AM
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
#19
09-25-2015, 01:55 PM
no such beast in 1994.. also theres many twin turbo trucks with a lot less then 500 hp
#20
09-25-2015, 05:33 PM
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!
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