So I need a new alt soon. I want a life time warranty so I don't have to spend the money again of course but I want to be happy with it. Knowing I'd be happy with a 220amp but I can't spend that right now for $400.

IF YOU INSTALLED A 140amp alt and your happy with it please let me know! I'd love to order it ASAP to get more juice, thanks!

 

2 years ago I had a alternator Re-built for my 06' F-350 6.0, the Guy said it's output was upto 170 Amps, he installed a smaller belt pulley so it spins faster at Idle,,,so far its still working, but wish I did a higher output one like around a 250 amp or so,,these trucks have alot of electrical componets on them, and adding a snowplow, (which I've had since day one with this truck), lifting the plow and going into reverse seems to still have a lag or transmission shutter now and then,,,and I think it is all electrical,,does'nt do it with normal driving. I would go with the Biggest amp Alt. I could get !!,,,Mark

 

So you had the 140 with an over drive pulley, and it was doing 170 and still not enough amps? Wow, but I don't have a snow plow but will be pulling a 32 ft camper. I'm just scared of putting in a lot of money and it lasting 2-3 years when I could have had a warranty. But I do see alot of people saying there's are still going after 3 or so.

 

There is a huge difference between pulling a trailer and pushing a plow. Plowing makes enormous demands on the electrical system, but you don't have long periods of higher engine speed to charge the battery back up. This is why the Snow Plow Prep option comes with either dual alternators or a single high output alternator.

When towing, you're usually running down the highway for hours on end, at engine speeds are above 1600 RPM, so the alternator spins and the batteries have time and available power to charge.

 

So you thinking a 140 with be good enough? Lot better than stock but not as good as the 220 and up?

 

Stock on the 6.0L PSD is what, 110 amps?

140 should work fine, but make sure your batteries are in good shape.

Rock Auto has 140 amp alternators for just under $135.

 

At least if the 140 isn't enough having the bigger casing I can get it rebuilt here locally to what ever I want. With the stock casing I can only rebuild to 205 for $349

 

I put a Tenney 270 amp on my truck. It has a lifetime warranty.

 

Googling now brb!

 

Do you remember what the price was? I sent them a message asking for one.

 

I want to say it was 325 or something like that after shipping. I've put my clamp meter on and have hit 250 amps right after startup. That is without the stereo running.

 

Go over to the 6.0 forum 6.0L Power Stroke Diesel - Ford Truck Enthusiasts Forums
And ask what alt everyone is getting.
They will tell you to get one from here >>> https://www.dcpowerinc.com/

Sean

 

Yeah, DC was my first choice and thought. But even a 270 there is $629 with a 2 year warranty. They look good and have good reviews but I can't see spending that much more.

 

Got a Bosch 135amp from Amazon months ago and its been good.

 

Or spend half of that on a 270 amp alternator with a lifetime warranty and not wait 6 months to get the damn thing...