which alternator for plowing with the 6.7

[trailbuilder]

I am truck shopping and see a 157 amp, 200 amp and dual 357 amp available. Has anyone used the 157 or 200 amp alt for plowing?

[travisH3]

we get the snow plow prep package on all of our trucks and put plows on them and have had no issues with alternators. you definitely dont need duals. we get whatever one comes with it or if it bumps it up for the snow plow prep to the middle alternator. none of our trucks have had any dimming of lights when operating plows. our 6.7 just got the plow put on last week.

[trailbuilder]

Thank you
I wonder what needs the duals other than an Ambulance
And I am seeing these on 450 KR

[travisH3]

Yeah, it's prolly mainly for the cab and chassis truck with service bodies and what not on them. And in all our years plowing we have not had one alternator go out. They can easily handle a plow, strobes, and salter going at the same time.

[TrickTruck]

I got the duals. Just because...

Whatif someday I want a big thumping stereo?

[BlueF350]

Would having dual alternators affect the mpg? If not, why not have duals and more electrical power in case you ever needed it?

[TrickTruck]

Bling bling, I have duals, you only got singles. ya ya ya ya



lol

[Painted Horse]

Duals offer one more parasitic drag on the engine. So it will have some efect on mileage. Is it measureable? who knows.

Added weight my be another reason not to add the second.

I got the HD Alt ( 200 amp) mainly because I'm towing all the time and need to recharge the batteries on the trailers while I drive. In particular the dump trailer battery.

If you get the Rapid Heat option ( and I recommend it if you live in a cooler climate) It requires the 200 amp alt. The Rapid Heat option is a 1500 watt heating element in your heater core that will help to warm the cab and defrost windows faster when you first start the truck. With out waiting for the coolant temp to raise. It's not a mircle of heat. But every little bit helps when it comes to warming up these large cabs when it 0° outside.

I replaced the serpentine belt once on my 6.0L and that was hard enough. I don't need the extra alternator added to the belt complexity

[TrickTruck]

Oh, yea. That's right. Rapid Heat, I have that too.

[BMMS]

I got the dual's on my 2012 just because I had an '08 and it's alternator quit on me and I got less than 10 minutes of driving until it shut it's self off - could't get it home before both batteries were dead. Truck had 98 km on it at the time. My rational for duals was with duals if one quit you'd have something charging to get it home!