Chaparral Villian SLV Speed Capability
 

Hello, I recently purchased a 1991 chaparral villian slv, thinking this would satisfy my need for speed on the water. Problem is im already wanting to go faster. I'm currently hitting 58 on gps and am wondering if this hull is capable enough and efficient enough for more?

Sorry, should have added some specs.
20' 3"
2800 lbs.
17 degree deadrise
Mercruiser 350 magnum
Alpha 1

If you are a seasoned driver, definately add more power. If you are truly going 58 mph gps with a stock 260hp motor, getting near 70 with cam, heads, exhaust, intake, and carb should be relatively easy.

If this is your first boat, spend more time driving it. Things can go bad quick in a small boat even at 50mph.

Not to mention be ready to add hydraulic steering and nice tabs for those speeds

Almost forgot...how dare I...to make sure boat is in good condition (wood and etc) and the steering , gimble, etc, etc is good to go also.

Agree with above too.

Understood, I know what will be required to achieve the speed as far as power goes and upgrading steering, trim, etc. I had it checked structurally and will get a second opinion before proceeding. My concern is, is it worth the time and money to put into this hull or should I be looking at another hull design for higher speeds? I really like the aesthetics of this boat and the layout which is why I'm wanting to stick with it if feasible.

Well, its never really worth it. If it suits you and it doesn't break the bank, go for it. I had my 91 185 Searay at 75 with 383, 430 dyno Hp and an alpha SS. I loved that boat, but the wife wanted something bigger. I just finally surpassed the old boat speed with the 23ftr' with the procharger and a 413 dart SBC that I have some bucks into. Honestly, I'd rather have the old Searay back. It is so easy with smaller boats.

The biggest question is, what kind of water do you boat in? There is a guy on my lake that has a 21' Rinker with a very strong 350 and nitrous. He claims it does 90 mph, but I can beat him and I only do 80, so I would say he is realistically around 74-75, Still fast. The only time he can go that fast is when the lake is 3" or less. At that speed there is almost no boat in the water. If he were to take it in Lake Michigan it would be dangerous to say the least even in 100% smooth water (Lake Michigan is never 100% smooth, there is alway some form of swell and it will get you in a little boat). If I were to give you advise, I would first decide on what size of lake and what size of waves you want to use it in at WOT! Only then can someone tell you if you should proceed or find something else.

Very good point. As much as I enjoyed the Searay, the waves did throw it around. The Stingray doesn't see WFO nearly as much as the Searay did, I don't know if it is just me getting older and am OK just knowing how fast I can go or if the lake is getting that much choppier. I used to get up to the lake Friday evening and all the fast guys were getting the yaw yaws out, and I would go out and play. I don't know if I just put up with a lot of chop or what, but I don't like to hammer around on Fridays anymore and the fast boats aren't even out anymore. I think those damn pontoons are responsible for all the chop, that or the wakeboard boats with their fat draggy asses. :)

Mostly running in a few inland reservoirs and maumee and portage rivers occasionally venture into lake erie or sandusky bay

you didn't buy the boat in Muskegon Michigan did you?near Mt. Garfield?

No WV

What happened to that 100mph project one??

His wife got tired of him hiding in the garage and spending money???

IMO your not going to be able to really go fast in Lake Erie. If you're fine with that, your boat would be a fun inland lake boat. Just be careful, as others have said, things happen fast in small boats that fast. SB is far more familiar with small blocks than I am, but I would sit down and calculate what its going to cost to build your engines to the power level you want. Take that number and ad 50%, I don't care what you think, add 50%. Then what could you sell your boat for as it sits, then take the amount your going to put into your engine including the 50% and see what you could buy for that money. I'm not telling you not to do this, but sometimes it can be eye opening. Also remember when you get that wicked engine in your boat, subtract 20% of what you could sell it for now in stock form, because realistically that will be all someone is willing to pay for a modded runabout.

If I were you, I would look for a 91-92 liberator 221 with a 502. I bet you could buy one for $13,000, and it will be a 64-65 MPH boat all day long and will handle Lake Erie way better than your current boat. They were made in Michigan so finding one would be easy. Just a thought.

My prediction and bigger twin engine boats. :smile:

New to forum, what's the 100 mile per hour project one?

Offshore Excursion brought it back to the top a little while ago. Is also on 1st page under 'New Posts'

It is here: http://www.offshoreonly.com/forums/g...promising.html

You're going to need spend 15k + labor on a boat that is worth less than 10k, so my answer would be NO.

Is the motor a true 350 mag? If so I would think you are down on power. I had a 350 mag in a 21ft Maxum and would get 65-67mph GPS. Then I put it in my 22 donzi for a couple of seasons and would run 62gps. My donzi is a little heavier then your villian, I would think you need to trim more, do a tune up, and/or try a new prop.

A 260hp Mag or ???

Was there a hurricane behind you when you saw 67 mph in the Maxum?

Go to page 102 in the link, there is a comparison of 5 small power boats in 1987. I have the 206 Formula and it ran 55-56 or so on the GPS with 270 horse. Pretty cool '80s flashback in some of the automobile ads too


https://books.google.com/books?id=Qu...page&q&f=false

Ha- I have that issue somewhere!

With the true 350 300hp mag. The 260 is a regular 350. I would see 65 with just me and my dad in the boat with 1/4 tank. The boat didn't way anything. Also it would get up out of the water with only the last foot touching. I beat a lot of 20-25ft performance baja's. I ran a 22p 3 blade up to around 4800-5000. But the same motor without being refreshed pushed the 22ft donzi up to 62 when it was 20+ years old

Wish they mentioned what props they ended up with, even though not a whole lot available back then.

Not looking to go fast on erie, just make it out there occasionally. Will mostly stay inland and on the rivers.

I'm looking into different props already, currently running a 3 blade 23 pitch mirage. 58.41 mph at 4550 rpm at wot

And it doesn't seem to make a difference if it's just me and a 1/4 tank of fuel or two of us and a full tank within a half mph

I've found the Mirage's to have too much diameter and blade area for single small block alpha's in smaller boats.

I agree. A Laser II is a good prop for a boat like this.