Borg Warner 171702 or 177287 on a 14L Detroit???

Wonderful!! How did you find it perform compared to single turbo CATS?

I've personally pulled 110k gross with a DDEC V 14L and it did very well stock. Just heard that 160 might be a bit too much for it.

 

Cats hit hard at a low rpm whereas the Detroit will slow spool and starts to hit hard as it gets over 1400.

What tire size do you run? I was 4:56 on 11r24.5

I pulled 140-150k like a breeze with mine, my legal weight when I was on the highway was 120k and I rarely saw a guy catching me on the hills. It was very good on fuel too.

 

I'm thinking 4.11s with 24.5 for the truck I'm trying to get now for this 160k gross job. I'll be using it to haul gravel trains and flow boys.

Good thing about the Detroit is rebuilds are very cheap and that's what keeps me thinking about them

 

600 to the tires is nothing for that engine. Pulling that kind of weight id look at 4.33 or even 4.56. 4.11 will work but not optimal.

Just get leon to tune your ddec5 and hang turbo to match tune. If your pulling that kind of weight I'd run a 80mm turbo with at least a 1.45 housing. Let it breath. Those engines have very strong bottom ends and can produce lots power when tuned correctly.

 

I

I appreciate the response, how do I get a hold of Leon? Should I also run 24.5's with 4.33 or 4.56

 

I wouldn't be overly worried about wasting money changing the gear ratio, heck I'm in this truck right now hauling 140,000 with 3:36 on 11r24.5 and have no issues, not ideal but it works.

I know on one of my other trucks, 4:11 on 11r22.5 had me turning 1600 at 65mph I believe. So for you, if anything I'd lower the tire size to a lo pro 24.5 or if you've got cash to burn, swap to a 22.5 and go lo pro will bring you to 1600rpm at 62mpg. Roughly

 

I mean I'm looking to buy the truck I'm talking about, I usually drive about 65 - 70 MPH and would like the RPMS less than 1800 if possible...

Right now I'm driving a 14 Cat CT660 with a "FAKE" C15 made by Navistar. 18 SPD and have no idea what the gearing is.

 

can you pm his info please

 

42# of boost at 1400, 38# at 2400.

 

Hey guys I have a 14 lt and just put a 171702 on do I need to get a tune now?