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E6 300 4Valve need more speed.

Have 1985 R688ST with a e6 300 and a T2090 trans, also has 4.64 reas. Has fuel turned up and pulls excellent at 1600 rpm, no complaints there . But my issue now is I can't get this truck to go more than 65 mph?? Any thoughts, ideas, or anything that may help me squeeze another 5 mph out of this thing now. Thank you

DanielG

DanielG

How Employer Pressure and Pay Structure Can Increase Commercial Truck Accidents

(Source) When most people think of the most hazardous occupation in America, few people consider that driving a commercial truck would be near the top of the list. But, annual safety statistics clearly identify that individuals working within the transportation industry have the second highest level of job-related fatalities, averaging over 900 deaths per year. The only occupation that experiences a higher injury and fatality rate in America is the construction industry, averaging over 1,10

Aaron Ahlquist

Aaron Ahlquist

e6

i have had a problem with the E6, from the dealership this motor has skipped on start up and smokes blue, it has the american pump on it, the dealership tells me it is an 18degree pump. in a pull this thing only runs like 725-750 on the pyro. any input on this serious skip would be much appreciated.

Bair84

Bair84

Driving a Big Rig: Eight Safety Tips for Truck Drivers

The American trucking business is a multi-million dollar industry. According to the American Trucking Association, trucking collected $726.4 billion in gross freight revenues, which makes 81.5 percent of the nation's freight bill in 2015. Unfortunately, thousands of trucking accidents take place in the United States every year. According to a report published by the National Highway Traffic Safety Administration, an estimated 342,000 large trucks were involved in road crashes in 2013, killi

Zachary Shewmaker

Zachary Shewmaker

B model parts

Hey guys, coming down the home stretch on my B project but still need a few odds and ends. wonder if anyone can help. i'm looking for a set of lenses and trim rings for the map lights above the driver and passenger doors. also the plates that go on the dash which read dry road/slippery road and tractor protection. i would also like to find a decent steering wheel, at least one better than the one I have. any help would be greatly appreciated. thanks

Pete Rizzo

Pete Rizzo

injector pump timing

E7-350  set flywheel position timed pump put together light says its  good(a&b lit up) wont start without ether. when letting off throttle it stalls out . pushes out  a TON of smoke??? any ideas? i still think timing is off

carlos lopes

carlos lopes

Mack 04' losing power

Recently bought an 04' Mack Vision.  Runs great when it's empty but when the trailer is loaded ( I haul steel coils) it loses power and shakes something fierce once I get around 60 mph.  Any suggestions?

Glb

Glb

1992 CH613 Electronic malfuntion code 4-2

I just purchased a 1992 CH 613 with a E7 300 .... not running ..  I did after a day of checking I found the fuel  pickup  inside the fuel tank was plugged .  blew it clear and primed the pump and she started right up ...  but, now after 10-15 seconds I have no throttle response ? and a Electronic malfunction light . after reading other blogs in this sight found out how to get the fault codes ! with two faults ,,, one 3-4 telling me " engine position sensor ... I adjusted the sensor on

Cowboy Jaan

Cowboy Jaan

E6 problems?

so i recently purchased a ReMack E6 4valve engine,they used my pump and all externals, i ran this engine 36,193 miles, brought it into my local Mack dealer and when the engine was torn apart they found 4 broken and scarred to hell pistons and liners, i mean honestly at this 36k on the motor, are there defects in the material they are using in the piston and liner department?? any answers or input on this situation would be much appreciated by myself and my 89 superliner with 2.3 mill on her !!!!

Bair84

Bair84

96 ch 613 e7 350 coolant issues

I have a 96 ch 613 with an e7 350 , it has been giving me problems with the coolant pushing out of the surge tank and running the top tank down to the sensor level ... it has not been running hot , temp stays around 190 on the gauge without much fluctuation , it does not do this consistently however mostly when under a load .... any information on possible causes for this would be greatly appreciated. thanks in advance

scerbydawg

scerbydawg

New purchase 1961 B61 10 Wheel dump

Just purchased a 1961 B61 10 wheel dump. 20 sp, I think 711, Runs like a Swiss watch. Other than the junk rubber shaking you out of the drives seat, she drove home wonderful. I'm looking for a few things. The rubber 10x20 tube type needs to be addressed. Also looking for steering wheel and hood chrome. Last but not least, The truck is worth a full paint, The triple frame and dump have been sandblasted. Dropping the oil and coolant, Jim From Bethany CT

overtheedge

overtheedge

Granite Cab Swap

Hey Mack people,I have a 2005 Granite CV713 we flopped this Fall and looking to replace the cab,I can find all kinds of Vision cabs the same era,will the Vison cab interchange with the Granite or are they totally different as far as mounts and firewall openings,any help would be greatly appreciated,Greg

gry

gry

Extended crank

Hey guys! New to the site. I'm having a problem with extended crank on a 2008 MP7. So far i have replaced the overflow valve. Both filter and separator. Any suggestions would be huge thanks anyone!

Biznill187

Biznill187

Granite 427 issue

Having an issue with my 427 after dealer installed new exhaust studs. The first time they started it, it blew an injector. They rebuilt injector but it only lasted 3 hours. Replaced injector, no power and engine sputtering.replaced all 6 injectors, no difference. Then dealer decided computer has gotten antifreeze in it from coolant sensor so they replaced harness and ecu. No difference. Got a super hot program from mack which actually helped a little, but still no power and low rpms (1200 to 160

Mland917

Mland917

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