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Old 08-06-2010, 01:29 PM
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flipper flipper is offline
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Boat: 1991 Prostar 190, fuel injected 302
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I just put a brick on the pedal and call it good
Lots of power is good, more is better, too much is just right.

'91 prostar 190
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Old 08-06-2010, 01:51 PM
silverblueBP silverblueBP is offline
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I tow the boat occasionally and hardly ever have to get out of OD, but when towing the Mustang to the track, there are a few sets of hills where if I left it in OD it would constantly downshift. I have been towing now for 5 years and have had zero problems dropping out of OD when it needs it, but leaving OD on while on flatter roads.

It worked the same way while towing the car back and forth from Oregon too.

My truck is a F250 SRW with the 7.3 PS.
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Old 08-06-2010, 03:40 PM
smiller smiller is offline
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Boat: '16 Prostar
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Originally Posted by flipper View Post
I just put a brick on the pedal and call it good
My 'ol Chevy ain't got no fancy cruise control neither.

I blast the AM radio, manually roll down the winders and let 'er roll.
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Old 08-06-2010, 04:29 PM
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thatsmrmastercraft thatsmrmastercraft is offline
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Originally Posted by joecarew3 View Post
Could you go into more detail on this? I was under the assumption if you are towing a decent load that you should have OD on? If I am understanding this correctly you should not use OD in hilly areas because of the constant shifting. I only towed my boat over 50 miles one time and that was the case, constantly shifting up and down some smaller hills. Any input is appreciated.

As far as that tranny cooler upgrade, how much could you expect to pay, and I imagine it would benefit for plowing in the winter as well???

Thanks guys... sorry for the threadjack
Simple mechanical advantage. In Drive you have a 1:1 engine to transmission output ratio. In overdrive, your engine is turning less than one revolution for each turn of the trans output. If you are towing a 14 foot aluminum fishing boat that weighs 700 pounds, you could tow in OD and never have a problem. The more weight you pull, the more mechanical advantage you will need.


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Old 08-06-2010, 06:17 PM
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Wake2004 Wake2004 is offline
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Boat: 2004 Mastercraft Prostar 205v MCX
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You have to give us vehicle type, I pull a 33' 5th wheel with my boat behind that with about 99% of the time the cruise is on but I have a D-max.
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Old 08-06-2010, 06:44 PM
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deminimis deminimis is offline
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Boat: 2004 X-Star
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Hellya Wake! We D-max people have it going on.
Never Mind The Bollocks, Here's The X-Star
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Old 08-07-2010, 09:42 AM
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psychobilly psychobilly is offline
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Boat: '92 Maristar 240SC BB 454
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I use it the whole time. Like some said, listen to what yer motor is do'n. When you start up a hill step on the throttle so the tranny don't shift. You can play with it and keep up with it for the most part. I pulled that 240SC home from northern Bama at 80 to 85 all the way on cruz, no problem.
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Old 08-07-2010, 10:03 AM
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DooSPX DooSPX is offline
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all good advice. I towed my 91 from WV to FL with out one problem.
also, remember this. lower rpm does NOT always mean less fuel used. if the engine has to work harder to do what you are asking and stay in the low rpm you are asking it will use less fuel then if it was a little higher rpm but hardly working to do the task.

my rig is a 04 GMC Sierra 2wd ECSB. 5.3L 3.73 rear. not one issue. I also used it to tow my car to the track and/or my friends broke car all the time. lol
heaviest I have towed with it is about 6,000 lbs and didn't even know it was back there.
1991 PROSTAR 190 Flagship Blue POWERSLOT OJ XMP CNC 13.7x17.5 .110 4B
A.K.A. One of a kind mistake
2011 Best In Show- 1987-2000 class

Trying to keep slalom alive

Need a new prop to fit your needs? Call Eric from OJ PROPS 800-359-9730

Originally Posted by flipper View Post
"It's better to keep your mouth shut and let people think you are stupid, than to open it and prove it"?

Last edited by DooSPX; 08-07-2010 at 10:06 AM.
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Old 08-07-2010, 10:48 AM
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east tx skier east tx skier is offline
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When I bought my truck, my dealer told me to try towing with OD on and if I noticed the truck downshifting frequently, to turn it off. After about 10 miles my choice was clear and I now always leave it off.
Previous: 1993 Prostar 205

Red 1998 Ski Nautique, PCM GT40, 310 hp, , Acme 4 blade, Perfect Pass SG/Zbox.


Be kind. Have fun.
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Old 08-07-2010, 08:09 PM
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TXX9 TXX9 is offline
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Originally Posted by WildPeace View Post
We will soon tow round trip from Tulsa, Ok. to Page, Az. Boat/trailer weight near 10% tow vehicle maximum. Obviously lots of hills and a continental divide to be crossed on I-40. As a general rule, I do not use cruise control because it forces the transmission to shift gears frequently. Looking for your opinions which are much appreciated. Thanks.

Option 1: Try a lake closer to home
Option 2: Tow it with a Duramax/Allison

If these options are not available, follow the advise of some of the previous posts and let whatever else you are driving tell you what it can do.

I use Option 2 with a few additional diesel junkie extras like tuners, intakes, exhausts, turbo upgrades, aftermarket injectors, etc.
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