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Old 08-10-2011, 09:38 AM
80starsmn's Avatar
80starsmn 80starsmn is offline
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Join Date: Aug 2010
Boat: 96 Prostar LT-1
Location: midwest
Posts: 60
Prostar 190 LT-1 vs Standard TBI

Hello, I am looking for your inputs on my buying decision. I am looking for a mid 90's Prostar 190 as a replacement for our 80' Stars and Stripes. While I know the upgrade in hull will be awesome alone, I am torn on the choice between a model with the LT-1 or one with the standard 275hp TBI 1:1.5 powerslot trans. I have been told there was an option on this boat for a LT-1 with powerslot 1:1.5 trans, does anyone know how common this is to find in the used boat arena? I am a 44yr old 175lb diehard slalom and barefooter with three boys who are wakeboarders, so our boat must meet all of our needs. The powerslot is in our 80 Stars and Stripes and I want the power it produces in our next boat. I am intoxicated with the cool factor of having the LT-1 but ARE the drawbacks too great for our needs. I understand most LT-1 boats are only 1:1 trans ratios which give great top speed but less low speed qualities. An LT-1 with a 1:1.5 ratio (if available) would solve that problem but then do have cooling issues, premium fuel oct. requirements, increased repair costs, finnicky running engine concerns? I keep telling my self I need to sober up and get over the "cool" factor of the LT-1 and just find us a nice clean 190 with the standard 1:1.5 and enjoy the new wake and ride. All opinions welcome.
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Old 08-10-2011, 09:47 AM
MIskier's Avatar
MIskier MIskier is online now
MC Fanatic
Join Date: Jan 2011
Boat: 2006 PS 190 w/ mini tower
Location: S.W Floarida
Posts: 629
An LT-1 without the slot is still going to be more than powerful enough for your needs. If you can get behind the wheel of one and the differences between the 80's S&S will be night and day as far as performance.
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Old 08-10-2011, 09:48 AM
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captain planet captain planet is offline
MC Addict
Join Date: Aug 2005
Boat: 2003 PS197, MCX, Powerslot
Location: Canton, Ohio
Posts: 7,565
I have a 98 190 with the LT-1 (350 HP) in my 30th Anniversary w/ 1:1 transmission. I have 670 hours of trouble-free engine performance to this point. I love to go footin and slalom, my wife and kids wakeboard and kneeboard. The boat does everything we want it to do. I generally go footin at around 40 mph and it gets me there fast enough.

Drawbacks to the LT-1? I don't know of any other than you have to watch the temp gauge since the engine has aluminum heads. The cooling issues you mention were solved wth reverse cooling. I can't remember the specifics of that off the top of my head, but if you do a search on here you will find several threads on the topic.

As for the premium fuel...it is 0.20 more per gallon x 24 gallons in my tank which makes a fill up $4.80 more.

I hope this helps.
2003 ProStar 197, MCX and Powerslot.
"Don't steal. The government hates competition." - Ron Paul
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Old 08-10-2011, 10:36 AM
east tx skier's Avatar
east tx skier east tx skier is offline
MC Hero
Join Date: Jul 2004
Boat: 1998 Ski Nautique
Location: End of my rope.
Posts: 26,183
Either engine will meet your needs. The LT-1 might do a little more for the long line footers though.
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 08-10-2011, 11:18 AM
Ski-me's Avatar
Ski-me Ski-me is offline
MC Maniac
Join Date: Mar 2007
Boat: Mastercraft, Prostar 205, 1994, LT1
Location: Rocky Mountains....Colorado Springs
Posts: 3,439
I have the LT-1 in my 94' and have had no issues with it (as soon as I had the correct t-stats installed). I wanted the extra HP because of our higher elevation and also the "cool factor". You can always re-prop your boat if you need to adjust hole shot or top speed. We've put on about 200 hrs (400 total) in the past 3 years and it has started up every time with no issues.

Definitely worth considering if you find the right boat. Don't get a trasher though just for the LT1.
- Jeff

1994 205, LT1
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Old 08-10-2011, 12:38 PM
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kpickett kpickett is offline
TT Enthusiast
Join Date: Sep 2004
Boat: 1994 Prostar 190 - LT1
Location: Missouri
Posts: 398
The LT1 came in 1:1 and 1:1.5. My buddy and I own identical '94s with the LT1. His is the slot, mine is 1:1. His comes out of the hole a little faster, mine has a little more top end. We've drag raced. He beats me off the line. I catch up by the end of the course and start pulling ahead. Believe me, the 1:1 has more than enough power to pull anyone out of the water. I always have to tell new drivers to really baby it on the start, or they rip my arms out. We use my boat mainly for slalom, but a barefooter friend absolutely loves the speed of my boat.

I have had no problems at all with this engine, except for a misaligned alternator bracket. It's not a finicky engine at all.
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Old 08-10-2011, 12:51 PM
SS LS1's Avatar
SS LS1 SS LS1 is offline
MC Fanatic
Join Date: Jul 2006
Boat: '13 X2 Pro Gen2, '98 30th Anniv PS190- SOLD-
Location: Western MI
Posts: 745
I have the same '98 Anniversary ProStar as Captain Planet with the 350hp LT-1, but we also have the Power Slot transmission. No regrets as the boat flat out rips compared to our old '85 S&S with the 1:1. The LT-1 is definitely the way to go, no downsides in my eyes. I thought with an additional 100 hp to feed (compared to the 351w) and the Power Slot the fuel consumption would be poor. But the fuel consumption ( with 4-6 people in the boat on avg, tower and heavy subwoofers up front) has been better than the '85 was with just 2 people in the boat.

The '98 had been a win win and we love the roomier interior space. Hold out for the right boat and the LT-1 or you will always want one wondering what it would have been like.
2013 X2 Pro Pkg, Gen2 Surf

SOLD - 1998 30th Anniversary ProStar 190

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Old 08-10-2011, 01:09 PM
VTJC VTJC is offline
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Join Date: Jul 2004
Boat: None
Location: Northern VT
Posts: 459
I have experience with a 98 MC SportStar(95-97 Prostar Hull) with an LT1 with a 3 blade prop 1:1 trans and a 99 MC SportStar with a 350 TBI (310 HP) aka as Predator with a 4 blade CNC OJ prop 1:1 trans. I owned the 99 and it was very comparable to the 98 with LT1, which is a friends that I still ski behind. The LT1 might have a slightly higher top speed, but with the CNC OJ I found the 350 TBI pulled harder pulling a skier up. If I where shopping for that era boat again I would go with the 350 TBI I think it’s a simpler motor electronically with less to brake and cheaper to repair and replace if necessary. If you search the forum, there are some great threads on the hull histories. Good luck with your boat search.

The SportStar/X5 a great way to get a newer boat, with simpler interior for less $ than the ProStars. Check out http://www.mastercraft.com/market/sh...uct=4164&cat=5
in 98 the SportStars standard engine was a 305 TBI(LT1 optional but rare), but in 99+ the stock motor was 350 TBI.
08 Correct Craft Ski Nautique 196 330 HP 350 MPI EFI
Previous Boats:
99 MasterCraft SportStar CB 310 HP 350 TBI EFI
98 Moomba Boomerang 310 HP 350 Carb
88 MC PowerSlot 240 HP 351 Carb Black on White
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Old 08-10-2011, 07:47 PM
The8Ball's Avatar
The8Ball The8Ball is offline
TT Enthusiast
Join Date: Oct 2010
Boat: 1998 ProStar 205 LT1
Location: South
Posts: 137
I've got the LT1 1:1 in a PS 205. Stock 13x13 4-blade. No problems, and enough power out of the hole to rip your arms out of their sockets. Get the LT1.
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Old 08-10-2011, 08:02 PM
Stutsman230 Stutsman230 is offline
TT Regular
Join Date: Feb 2011
Boat: 230 VRS
Location: Southwest
Posts: 24
I have an 97 PS190 with the LT1 and the power slot. I have always run it on unleaded regular and it is awesome. The only problem I have had was cooling with the factory water bleeds on the low end of the heads. I installed water bleeds on the high end of the heads (very easy to do) and the problem was solved. Recirculating water pumps are expensive for these (factory Corvette). Have 1100 hours with no other problems!

We bought a 02 230VRS and now have the 190 up for sale. We needed more room for our toys. We still love the PS190 but I can't afford two boats!
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lt-1, prostar 190

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