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Discussion Starter #1
hey guys, im going to look at a 1999 f-350 7.3 powerstroke this week. i have one question really....the truck has a 6 speed in it, and i was wondering if there were any problems with these transmissions...or even this year truck...the motor has 75k

thanks alot

ROB
 

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where is the powerstroke emblem on the truck, if its a 1999.5 and earlier it will have a smaller charger than the 199.5 and newer
 

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the 6 speed is about bulletproof really for an un modded 7.3 i have the same manual tranny behind my v-10 and never had any issues and i tow alot ,And engine wise the 7.3 is a pretty good engine really,they have their lil quirks when you get ahold of the wrong one just like anything else but all in all they are strong trucks,
 

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Discussion Starter #4
yeah the emblem is on the door...i work for a landscape construction company so i've driven plenty of these trucks before...its just that they have been all autos...i don't plan on modifying the truck, i just want it for towing my bobcat and friends boats...i had heard some bad things about earlier 99s so thats why i was wondering....

thanks for the help
 

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6 speed is the one to have....just a heads up, the one I drove a lot wasnt synchronized on the granny 1st-2nd shift (only used when towing) Sometimes its a pain to get the shift right or need to double clutch on the way down but supposedly theyre made that way.
 

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Discussion Starter #7
yeah i've driven my friends 96 powerstroke that has a 5speed in it, and his first gear is the granny gear...so basically i should start in 3rd your saying?...i've only driven these sort of trucks with the 5 speed in them so this is all new to me....

thanks for the help so far
 

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never had a problem with my tranny either and i ve slammed through the gears a few times, not to mention the truck has a few mods on it. Youll be fine with it its a good strong truck
 

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Yeah if your pullin a boat or a bobcat around i would steer clear of the auto. If your going to be leaving it stock you arn't going to be able to tear up a six speed.
 

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For almost all normal driving and towing, unless you pull something inordinately heavy or are severely undergeared, you'd start off in 2nd gear, as indicated on the shift knob. Low/1st gear is for pulling something extremely heavy short distances or easing along very slowly.

The biggest thing to watch out for on those trucks (7.3 Direct Injection/Powerstrokes), whether it be a '94.5-'03, is to make sure the coolant has been kept up to par and changed, as Ford/Navistar/the books call for. The cylinder walls are terrible for pitting if the coolant hasn't been kept up to grade. Other than that, I think the weak link, in that combination (7.3/6-speed ZF) is the dual-mass flywheel. If you ever need to or, for whatever reason, just feel the need to "upgrade" your clutch, I'd take that dual-mass flywheel and throw it in a dumpster and get a single-mass (read: standard one-piece) flywheel and quality clutch. Southbend Clutch, etc., sells single-mass flywheel & clutch kits for such applications.

EDIT: and while I realize you indicate you don't have any plans for modifying it, a 4" exhaust helps those things come alive, quite a bit, as well as reduces your exhaust temperature and improves mileage, too. You can get a 4" turbo-back exhaust from Summit for like $300.00 (down-pipe, intermediate pipe, muffler, tailpipe, clamps, and hardware).
 
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