82 supra build

[tyler_craig]

Hey guys what's up. Im new here.I have a 82 supra I picked up on a trade im looking to do a extensive custom job to.I pulled the 351w to rebuild due to a blown hehttps://uploads.tapatalk-cdn.com/20170228/46f10ef240a2c1ca93401664beb10cfa.jpgad gasket to find to cylinder walls pitted it has been bored to 60over my question is i plan to put in a 427 stroker what gear ratio should I have in the trans and what type of prop should I have ? Keep in mind im not really into wskeboarding or skiing just want some speed and turn heads

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[jtryon]

you have a 1:1 trans and a 13x13 prop, if it's the stock prop. you'll turn heads with that logo on the side but i'm not sure if it's the attention you're looking for :D i'd take that off and leave it blank, probably look better that way.

[tyler_craig]

I was in the for 4 yrs so Im. putting a wrap on it the navy's blue digital camo with blue and interior and im building a dodge 4x4 to match.im also putting blower on it i want to make sure I have the right prop and gear ratio for the performance im looking to get out of it

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[MJHKnox]

You came to the right place for restoring a Supra.

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[tyler_craig]

You came to the right place for restoring a Supra.

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I hope so cause im ready to get it going but I want to make sure I have the right trans and prop setup for Hp and speed im looking to get out of it

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[Salty87]

These boats weren't designed to be speed demons. That said, most of us are running Acme props though not for top end. You could give them a call and see what they recommend. The stock Borg Warner transmission is already beefy but possibly not for really high rev applications. What sort of rpm range do you think you'll be running from the 427? Acme may be helpful there, too, since the prop will have impact on that.

Swapping the Supra for something more suitable wouldn't be a bad idea.

[tyler_craig]

No more than 6000 6500rpm but it not something im gonna be doing all the time.I understand they weren't made to be speed demons im looking to make my supra as unique as possible with the looks overall apperance hull mods and engine performengine.my goal is to hit 90mph top end one time after that its a one of kind looking and running supra that turns heads curising across the lake

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[Salty87]

Wet blanket time...count me out of a 90 mph run (not that you asked, lol). Super dangerous and doubt you'd get there with this hull/driveline combo. Since the shaft and propeller angle are fixed you'll be fighting a really uphill battle. Add to that the hull just wan't designed to do this and it's not a good start.

[MJHKnox]

90 mph . . . . Hmmm. Maybe this guy will lend you a few.

https://c1.staticflickr.com/4/3775/32870402330_92e2f497c6_z.jpg

[tyler_craig]

90 mph . . . . Hmmm. Maybe this guy will lend you a few.

https://c1.staticflickr.com/4/3775/32870402330_92e2f497c6_z.jpg
Seen those on a 25ft pontoon boat 100+ mph think the vid is on Youtube

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[Mischief IV]

90 mph in a Supra Beast? Why exactly? I've been 75 mph in a twin engine BAJA and that was designed and built for speed, the Beast hull, not so much. That huge Supra logo or backwards Nike swoop ought to add 10 mph. If you can do it, much respect, but I'd say get a bass boat with a large motor if you want a thrill ride.

[tyler_craig]

90 mph in a Supra Beast? Why exactly? I've been 75 mph in a twin engine BAJA and that was designed and built for speed, the Beast hull, not so much. That huge Supra logo or backwards Nike swoop ought to add 10 mph. If you can do it, much respect, but I'd say get a bass boat with a large motor if you want a thrill ride.
Why 90mph cause it sounded like s good number.im not interested in what the boat is designed to do but more what is it capable of.and for a real thrill ride id go back to my 77 flatbottom sanger vdrive with my supercharged 502 stroker at 115mph

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[cadunkle]

90 MPH won't happen with that hull. It'll likely get scary and unsafe too much above 60 MPH, just judging by what some of the classic CC guys have done. You're also fighting against a real steep shaft angle as compared to a Vdrive like your Sanger. These are towboats, make to left the stern, plane quickly, and put the torque to the water so as not to be slowed or yanked by a skier. Forget 90 MPH, but you can reasonably have a fun 60-65 MPH boat, depending on what speed you reach the hulls limits. For what it's worth my Saltare (23' version of your boat) with a very mild 454 will do 51 MPH with the factory 14x13 cast 3 blade. With a 13x12 CNC prop it'll do about 43 MPH.

Forget the 427w. Every 427 kit I've seen puts the pin in the oil ring land, she'll be blowing oily smoke in no time. If you want a stroker go with a 393, which keeps the pin below the oil ring. It's much better suited to longevity and sustained high load in a boat. If you really want to make a hot rod Personally I'd build a 460 based engine, even a very mild 545 stroker is a torque monster. You would need to upsize the prop shaft and log to run a prop with enough pitch, which you may have to anyway with a fairly wild 393 or 427 small block. No need for the cost and complexity of forced induction, start with a big block and either way even with a NA stroked small block you'll likely hit the limits of the hull. Also keep in mind a cam that pulls hard to 6500 RPM is likely going to have reversion issues.

Please keep us posted, I'm curious to see what these hulls can do and I enjoy high performance builds.

[jasun]

im not interested in what the boat is designed to do but more what is it capable of
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You realize these things go hand in hand right?

Good luck though. Would love to hear what this beast will sound like!



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[tyler_craig]

You realize these things go hand in hand right?

Good luck though. Would love to hear what this beast will sound like!



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When I get it done ill upload a video. Plus a speed run video as well.lol.I know I may not hit 90 but it sounded like a good number so Im gonna run with it.

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[MJHKnox]

When I get it done ill upload a video. Plus a speed run video as well.lol.I know I may not hit 90 but it sounded like a good number so Im gonna run with it.

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The 90mph man. Go you.

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[MDVols]

It looks like a clean boat other than the sticker. The camo idea should look cool might as well install a tower to hold some speakers while your at it.

[tyler_craig]

I've been selective about my description of my build when I have some free time I will break down my desgin and give an overall of what my intentions are and what I'm trying to accomplish with the build.

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[Jetlink]

My hull design has the boat getting scary around 45-46MPH as the boat just hunts the entire time due to my setting on the wake plate. The way that I combat that if I want to go faster than that with my boat is I load it up on the trailer and hit the freeway where my boat is happy doing 70-80 there.

[Mischief IV]

My hull design has the boat getting scary around 45-46MPH as the boat just hunts the entire time due to my setting on the wake plate. The way that I combat that if I want to go faster than that with my boat is I load it up on the trailer and hit the freeway where my boat is happy doing 70-80 there.

Haha, but not 90? See, told you that logo would add 10 mph...that's your problem.

[gogger]

Go diesel! Both my Supra boats have been over ninety with Cummins power. Towed behind my dodge 3500 dually it was easy to get going over 90 going down hill in the Tennessee mountains.

[SquamInboards]

I don't want to be a wet blanket, but yeah, these boats are just not set up for high speed.

A close friend had an American Skier hull that he put probably 5 different engines in over the course of a few years, and basically every one of them had the same result. The boat would be a little louder, a teeny bit faster, and would porpoise more easily with every addition of power.

Sure, you can build a nice powerful engine and prop the boat so it will go 50, or 55. Maybe a little more. But you're just not working with the kind of platform that's meant for going fast.

My boat went 40 mph at WOT (4400rpm) with 1/4 tank, flat water, and only a driver, with its original 240hp carb 351. With a 310hp EFI 351 and the right prop, it will do 41mph @ 4800rpm. That's 70hp for ONE mph - despite 400 more rpm, too.

All I'm saying is, make the boat how you want, just temper your expectations of what kinds of speeds are really possible with a prop shaft point 14 degrees down into the lake, pushing a big boat harder and harder into the water, not up and out.

But I'll also say that there are some very knowledgeable people here to help you with anything you might want to know about getting that boat working nicely. So I'm happy to help with that cause, too!

Cheers

[jasun]

Updates???


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[tyler_craig]

Sorry no updates yet.broke my last phone that had the app on it been so busy with work and having had the time to mess with it.Family trip coming up so funds for the speed demon r on hold so hopefully this winter I'll be able to make some head way

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