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Posted

leaving my neighborhood a few weeks ago(I just remembered this) I was sitting at the stop light and see a broken down big rig....truck AND attached trailer, full 18 wheeler....getting towed off the side of the highway by a Chevy 3500 Duramax. it was getting along nicely too, didn't seem to be straining!

Posted
leaving my neighborhood a few weeks ago(I just remembered this) I was sitting at the stop light and see a broken down big rig....truck AND attached trailer, full 18 wheeler....getting towed off the side of the highway by a Chevy 3500 Duramax. it was getting along nicely too, didn't seem to be straining!

Nice! I bet the eyes were popping out on that Allison!

Posted

Gotta remember a duramax isn't putting down that much *less* power than your typical Peterbuilt. Just a lot less weight lol.

Posted

My Pete is 550HP and 1850lbs of torque. Peak HP at 1600rpm, peak torque at 1400 rpm. I love GM but a Duramax ain't even close.

Posted

forgive me, I should have said "the d-max has more than enough power to pull a semi at low speed".

Posted

well, with a tuner and some mods it could put down that much. Any of you remember the Ram guy that used to be on here? had his Cummins redone with bigger turbos and custom tune, was making like 900HP and 1500 torque or something like that?

Posted

He's trying to sell that truck now I think on another forum, says it makes about 1500 ft/lbs of torque easy.

Posted
well, with a tuner and some mods it could put down that much. Any of you remember the Ram guy that used to be on here? had his Cummins redone with bigger turbos and custom tune, was making like 900HP and 1500 torque or something like that?

 

 

That's a lot of torque but it'll never stay together. Engines in commercial trucks are designed to run that much torque all day every day. A C-15 Cat diesel is good for 2050lb/ft @ 1200rpm, thats the highest I know off hand. Sure wold be nice to have that much torque in my Chevy!! :)

Posted

the gearing difference is huge. I can start a 80000lb load plus 15000 lb truck and trailer (95000 lbs total) by letting the clutch out in third gear. Top speed in the lowest gear is less than 5 mph (and that's reving the heck out of the truck). The driveshaft is as big around as my thigh. Each differential holds just short of 5 gallons of oil. I know some of these diesels have tons of power, but I'd drag them around without even getting into the throttle.

 

Commercial trucks and consumer truck are not even in the same class.

Posted
the gearing difference is huge. I can start a 80000lb load plus 15000 lb truck and trailer (95000 lbs total) by letting the clutch out in third gear. Top speed in the lowest gear is less than 5 mph (and that's reving the heck out of the truck). The driveshaft is as big around as my thigh. Each differential holds just short of 5 gallons of oil. I know some of these diesels have tons of power, but I'd drag them around without even getting into the throttle.

 

Commercial trucks and consumer truck are not even in the same class.

Well yeah, the same reason the topkick I use to drive with an 8.1L could drag a pickup with a cummins or D-max around.

Posted

stock the LT1 coupe autos run around 5.5 0-60 and 14.1 1/4, but I may have gained a small amount for being a roadster(negligible amount) back,as it's got a K&N, airfoil, all synthetic fluids(royal purple in the diff, Mobil 1 in the block, and whatever synthetic the lube shop used to flush the trans.....eventually I'll start switching that out with royal purple), which should add a few extra ponies(MAYBE 10 RWHP from individual dyno things I've seen)

 

The starting issue was solved, I guess it was just a clogged dirty injector. It' beens setting all week for the door panel screw retainers and I fixed all the little things got in it to back it out and wash it and it started on FIRST CRANK!

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