1993 Chevy Cummins K3500 on 2040-cars
Adkins, Texas, United States
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This Chevy is a 1993 model with a 1997 Cummins. (215 pump) It has a 47RH, and 241DHD. I built every part of this conversion. It is not a kit conversion. Since I put the engine in, I've put 30,000 trouble-free miles on it. Now I have broken stuff along the way, but it was my fault, not the truck's.
It started as an almost stock engine. Just free mods and timing. I ran it like that until I broke the stock input shaft getting onto the interstate. I put in an ATS input shaft and ATS billet flywheel, and did another full tranny rebuild. Eventually I put twins on it. Started with he351cw over bht3b. I ended up replacing the 3b with a 4c, and went from an "over/under" setup, to a "side by side" setup. The truck is a pulling monster. Has over 500 horsepower, and over 1000lbs of torque. It gets up to 24mpg on the interstate via the 3.42 gears. At 75mph, it does 1850rpm. The lowest mileage I've gotten since the conversion was all in town, and that was 19mpg. But this truck isn't about the mileage. It's about the adrenaline rush you get whenever you punch the throttle. The twins spool loudly and quickly. They are lit by 1500 rpm, and past 50psi by 2000rpm thanks to the 9cm exhaust housing on the 351cw. The truck is and isn't 4wd. Right now, I've taken out the front drive line. It's got 3.42's in the rear, and 4.10's in the front. My plan was to put a Commonrail front end under it, and put 3.42's in the front as well. But I've grown tired of this hobby, and it's someone else's turn. At this point, it is a good daily driver with very good street manners. You could dial out some fuel and work this truck too if you wanted. It starts faster than any Cummins I've ever seen, and it does it without needing throttle input. When it's warm, you can't even try to bump it over without it starting. I've used Hobbs switches to control overdrive and lockup. I located them under the 4wd trim. You can adjust the shift points while you are going down the road. If you want, you can adjust them to even lock up in third and do a locked shift to overdrive, and it will all still work like a normal automatic. I've also put in a three-position mystery switch. You can run it in "auto" and just leave the truck alone. But you also have the options to force or defeat lockup. This is useful for pulling heavy in the mountains. Once the EGT's start to get hot, you can unlock the converter and they will cool down. You can run it like that until the tranny starts to get warm. At that point, you can force lockup and the tranny will rapidly cool back to 125*. The cooler I put in is massive. The switch also comes in handy on the dyno, as you can force lockup and floor it without it kicking out of lockup. At that point, it is running like a manual tranny, and if you are driving and try to come to a stop, it will not downshift unless you change the switch to defeat lockup, or auto. It will stay locked up so tight, it will kill the engine. The truck is still a project truck. You could tidy it up and call it done, or you can keep working on it. It's wicked fast, and will run the 1/4 mile in high 13's launching in 2wd. It sounds good, and has always been reliable for me. But it's time for it to be someone else's project. This truck is not street legal in Texas. It needs the reverse lights hooked up and mudflaps put on to pass inspection. So if you are planning on buying it, you can drive it at your own risk, or trailer it. The reverse lights just need a connector for the tranny, then run the hot to the lights. Here is a list of what I've done to it that I can remember: HEAD: Head gasket Head studs (ARP 625) Clearanced rocker pedestals New valve guide seals Hamilton billet pushrods with 10* titanium valve keepers Hamilton 165lb beehive valve springs AIR: Three piece pulse manifold HE351cw over HT4C (2400cfm/149lbs per minute) 94-98 intercooler FUEL: Contagious 7x12 injectors 215hp injection pump 181 delivery valves Benched AFC with modded foot for rack travel HAMILTON: Billet pushrods with 10* titanium valve keepers 165lb beehive valve springs PEAK: 4k governor spring kit TRANNY: 47rh controlled with Hobbs switches MagHytec double deep pan Mystery switch to force lockup, defeat lockup, or run in auto ATS billet flywheel ATS billet input shaft DTT master rebuild kit DTT 4.4:1 apply lever DTT billet band strut DTT zero leak servos DTT upgraded OD piston with O-ring DTT extra clutches per pack DTT valve body DTT billet triple disk torque converter New over running clutches New governor Cooler is 1998 Dodge Ram A/C condensor with another cooler stacked on top of it. Mounted under the cab. Controlled with thermocouple and can be adjusted to turn fan on at different temps. MISC: 1997 Cummins engine 241DHD transfer case Commonrail starter 3.42 gears in rear Dakota Digital SGI-5 to control and calibrate speedometer Firestone Transforce tires with probably 50,000 miles of tread left Gauges (Autometer Phantom I 60 and 100 psi boost, 125-250* Trans temp, 0-2000* EGT) KDP tabbed 18.5* timing |
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GM recalls 200k Hummer H3s for fire risk
Thu, Jul 9 2015An issue with fires erupting in some Hummers has prompted General Motors and the National Highway Traffic Safety Administration to issue a recall for nearly 200,000 vehicles around the world. The bulk of them are in the United States. According to the first statement (below) obtained by Autoblog from GM, the issue stems from the HVAC system in Hummer H3 models. The connector module for the blower motor has, in certain cases, overheated, melted the surrounding plastic, and started a fire. 42 such cases have been reported, including three instances of occupants citing minor burns. GM confirms that two of those three cases lead to the vehicle being destroyed in the fire, but states that no crashes or fatalities have resulted. The issue affects 196,379 examples of the 2006-10 H3 wagon and the 2009-10 H3T pickup, with 164,993 estimated to be in the United States. In order to fix the issue, dealers are being instructed to replace the relevant parts of the connector and harness. In a second, unrelated campaign, GM is also calling in 50,731 Chevy Spark and Sonic small cars – 45,785 of them in the US – due to a software glitch. In those affected vehicles fitted with the base radio and OnStar system, the audio system may not be able to switch out of turn-by-turn direction mode, causing the display to go blank and all sound to mute – including key safety warnings. In addition, the system may not switch off, draining the battery. GM states that no crashes, injuries, or fatalities have resulted from this issue, and all that dealers will need to do in this case is reflash the software. Related Video: General Motors is recalling 164,993 2006-2010 model year HUMMER H3 and 2009-2010 model year HUMMER H3T models in the U.S. In certain vehicles, the connector module that controls the blower motor speed in the heat/vent/air conditioning (HVAC) system may overheat under extended periods of operation at high- and medium-high speeds. The heat could melt the plastic surrounding the connector module, increasing the risk of a fire. Dealers will replace the affected portion of the connector and harness. GM is aware of three reported minor burns and 42 fires but no crashes or fatalities related to this condition. Including Canada, Mexico and exports, the total recall population is 196,379. ### General Motors is recalling 45,785 2014-2015 model year Chevrolet Sparks, and 2015 model year Chevrolet Sonics in the U.S.
Take a close look at the guts of the Chevy Volt battery, powertrain
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GM puts 3 million miles on hydrogen fuel cell test fleet
Mon, May 12 2014Have General Motors' hydrogen fuel-cell vehicles emitted enough water vapor over the past six-plus years to equal the steam coming out of Old Faithful? Not exactly, but GM has released a few figures related to the Project Driveway initiative it began in 2007. The numbers are impressive, if not quite of the geyser-spouting variety. In all, the General converted 119 Chevrolet Equinox SUVs to run on hydrogen, and those vehicles have just collectively surpassed the 3 million mile mark. And if you were waiting for us to tell you that the distance equals a half-dozen round trips between the earth and the moon, well, there you go. The better news is that the SUVs have combined to save almost 158,000 gallons worth of gas, and some of the vehicles have more than 120,000 miles on them. More than 5,000 drivers have participated in the project. GM reached that landmark about 10 months after it announced that it was working with Honda to accelerate the development of hydrogen fuel-cell powertrain technology. The two companies estimated last summer that it may have something to sell to the public as soon as 2020. For now, you can check out General Motors' press release below. GM Fuel Cell Fleet Tops 3 Million Miles Chevrolet Equinox fuel cell vehicles driven in real world reach milestone DETROIT – General Motors' fleet of fuel cell vehicles recently passed 3 million miles of hydrogen-powered, real-world driving. Some individual vehicles have accumulated more than 120,000 miles. By GM's estimate, using hydrogen to power these vehicles, the fleet has avoided 157,894 gallons of gasoline consumption. This specially equipped fleet of Chevrolet Equinox Fuel Cell vehicles are part of GM's 119-vehicle Project Driveway program, which launched in 2007. Since then, more than 5,000 drivers have provided feedback on the functionality and drivability of fuel cell technology. "Hydrogen fuel cell technology is an important part of GM's advanced propulsion portfolio and we continue to make substantial progress in furthering this technology," said Charlie Freese, executive director of GM's global fuel cell engineering activities. "These vehicles have operated through seven full winters and a wide range of environmental conditions, proving that fuel cells can meet the demands of real-world drivers." Last year, GM announced two fuel cell-related collaborations.