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looking for references for adding auxiliary gear units onto semi trucks. Old peterbilt service truck needs taller gearing for higher speeds. Truck rpms out at 59 mph. Was hoping to find something similar to GEAR VENDORS unit, but specifically made for OTR semi trucks. Technically, changing rear...

Yes, I'm going to ask you to tell me how much my truck is worth, haha. Got some family changes, kids, and the like going on and can't decide whether to sell the truck or keep it. It doesn't get used as a 3/4 truck should so I've been thinking of downsizing. Sucks to admit as a mechanic and...

So, to make a long story short, driving home tonight my TC isn't unlocking. Tried all scenarios, and same result. Shut truck off, restarted, same result. In fwd or rev, it lugs super super low, and then upon shifting to neutral, it revs up to 14-1500 or so, as if it's clearing its throat. Same...

Ok folks. I'm only writing this here because there's a lot of intelligent people that also do some trucking. I'm trying to do some trailer wiring. We've got a Kenworth T300 dump truck that has a tag trailer pulled behind it all the time. It has a standard 7 pin rv style trailer connector, with...

Not a Cummins topic, but way too many knowledgeable people here to not ask. I bought a Mitsubishi 4D31T from a gentleman who removed it from canter truck. I need an engine oil pan for this and can't find one. The OEM one is rusted really bad. It hadn't broke through yet, until I hit it with...

What's everyone's egts? Towing, uphills, level ground, loaded unloaded etc. I have just installed a wicked wheel and an afe waste gate. Curious if I'm being too hard on myself or not. I can reach 1400 deg uphill accelation, not loaded. 70mph on interstate is roughly 750-850. It just seems I...

I've been curious about ditching my 48re for a g56 six speed manual. I've built it up quite a bit, but still my brain doesn't like it. I've got a mostly stock engine and plan to keep it that way, and even when driving solo I can peak eqt's way too each because it's way under the torque curve and...

Problem; AC isn't blowing cold air out the passenger side air ducts. Data: Driver side-50*, Passenger-80*, ambient temp- 85* History: Owned truck years. Always had weak air potential from passenger side. I suspected blend doors, but never attempted repairs because I rarely haul...

Hi guys, Looking for some help on my transmission. The engine, trans, etc works perfect all the time, expect for one down shifting and shuttle shifting issue. Longgg story short; built trans myself and it performed flawless for two years. After about two years I started having a weird...

Hi guys, Long story short, I put an Espar, Hydronic M10 on my truck within the last week. I had previously set in up in my garage using test equipment to do fuel flow analysis, and amperage draw; the heater worked awesome. I finally got around to plumbing into the truck. I retrofitted a...

Built, 48re is downshifting very harsh from, I believe, 2nd-1st gears. Build has had over 30k miles and has performed flawlessly. Withing the last two weeks the problems has started and gotten almost 100% consistent. Nearly every time I slow down or come to a stop, the trans downshifts really...

Base model truck, no options, period. Not even power door locks. No wiring in the doors even to add options. What can be done? I've owner truck for 4 years, but have thought about trading because I go back and forth between towing a lot, and not towing. Not having power adjuster mirrors sucks...

Does anybody have any real world experience with the wicked wheel, or batmowheel? Been looking to get one for some time now. But want to know if it's really worth $230.

title says it all. Haven't payed as much attention to the market as I used to. Anybody know if, or when they'll be making EFI Live for the 03-05 trucks? I've got an 05, and have been waiting and waiting for so long. I need some custom tunes, haha

I used the search feature, but didn't find what I was looking for. So I posted another mirror thread. Hopefully my situation is a little different. I want power mirrors for my truck, and it did not have them. The problem... My truck is a base model. Meaning NO power lock, No power mirrors...

I've got Bully Dog GT Diesel for my truck, listed below. I am having issues with updating it. It says online that the newest version is 1.1.4.3. My current version is 1.1.3.1. I do not know what is changed for the latest flash. Mine will not update to it, period. But the weirdest thing is, it's...

Hey folks, Just curious on thoughts on switching to synthetic 5w-40. I'm currently running Rotella 15w-40. Have been doing a lot of research on oils lately and seems that Rotella T Syn is just about the BEST oil out there, period. For anything. It's also JASO motorcycle rated, as I am an...

I have a 2005 truck. And I'm wanting to know what changes took place that allows EFI Live to be used on 06-07 trucks, and not 05s? Ecm?

Just noticed tonight out in the snow and slush, that my passenger side door seal on the bottom of the door was missing. Had lots of dirt, rocks, sand, salt, and snow packed up there. Where is a good place to get those seals? Is it something simple to buy at an auto parts store, or have to go to...

Hey guys. I am in need of some information. I acquired an arctic heater from a piece of heavy equipment, or similar to what's used of buses to provide warm coolant flow for heater. For those who don't know what heater I'm talking about, see description below. I am in need of information on what...