Fastest 311/357 ???
 

What is the fastest anyone knows of a 311 or 357 to have gone. What power drives etc?? What speeds have you all personally seen In your boats??

I know of a 80mph 311

bob barker here used to have a 357 in the 80 mph but i think he had around 700 hp.

search for his tread

found it:

Thread: Share Boat pics?
by bobbarker Replies
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Re: Share Boat pics?
heres mine,
F357sr1 formula 572's 650hp stellings,speedmasters 83mph gps so far

cool im lightening mine up some and going to blueprint the bottom during the restoration so we will see what speeds I can swing out of it.

wondering if since im getting without power or drives if it would be worth it to go built bravo or stay trs or ssm, or just put kaamas on it and put big power in front of them???

What horsepower are you thinking? Starting from scratch I wouldn't do bravos. Kaamas were 4 or 5 mph faster over trs for the same powe according to formula. Why not go with number 3s and about 750hp a side.......setup would be huge but that would be awesome.

Was thinking in the 650 range maybe 700. Just depends on how carried away I want to get or if I go with blowers or not.

My 303 will do 84 gps with 675 a side and bravos 26 hydros.

You might want want to just buy one that goes faster thats already done. Your gonna spend some dough by the sound of things, and probably hate boats by the time your done. Just my opinion cause I,ve been there.

I grew up in the boating world used to own a marina been in it since I was born. Dad did it gramps did it as well. Driven test boats for merc etc. I know what goes into it and I enjoy the bus process. Why do you think I spent all that time restoring my 27 instead of buying one? Also I enjoy not having a payment or being up to my eyeballs in boat debt. So it makes more sense for me to build what I WANT not someone else's crap that's been thrashed or that I will change anyway.

Something doesn't seem right there when I've banged 80 with 2 stock 502's, and always get 74/75 and I need to play with props as I am sure there is more there, what else is in your setup?

If boat was originally built with TRS, may want to price Konrad 540's as they are direct replacement with transom sutouts, and they will handle a lot more power than a Bravo. May be able to find a decent used set rebuilt. Just a thought.

Yeah thought bout those as well.

311 KAAMA mild power 450 a side 77

True BUT yours ran really good when you were done!

[QUOTE=Gh700xx;4249458]I grew up in the boating world used to own a marina been in it since I was born. Dad did it gramps did it as well. Driven test boats for merc etc. I know what goes into it and I enjoy the bus process. Why do you think I spent all that time restoring my 27 instead of buying one? Also I enjoy not having a payment or being up to my eyeballs in boat debt. So it makes more sense for me to build what I WANT not someone else's crap that's been thrashed or that I will change anyway]
You didnt mention in your post that you built a 27 from ground up. I know what you mean about building it the way you want to but there is some nice hardware out there that someone has spent a boatload of money on. My 302 with Kaamas started at 73mph and when I sold it 90mph on gps with 600 per side and 250 blower shop blowers. A friend of mine had a 87 357 with Kaamas with 700 per side and ran about 84ish. 357 is a nice ship but heavy.

Yes it did but it was time for a change... Right guy at the right time came along.

Yeah mines a 311. Hoping for 80s so we will see. I was thinking even Blackhawks maybe but after talking with formula they don't think the 311 has enough natural lift to work with Hawks. Which sucks cause that's what I REALLY wanted to run.

You put surface drives on it #3's #4s or a Kaama something like that with 500 a side it should do better than 80. If I would have put a pair of 525SC's I bet I would have run 85

yeah I figure with kaamas on it which I may just go with or if I can get some info some x-dimensions or if I need to change anything on the bottom I would love to run hawks and ditch the transmissions. If I cant though I am leaning seriously to kaamas and bout 600 a side. I think with most the cabin galley and stuff gone and ditching the water tanks and the porta head the weight savings will definitely help.

There are probably 4-5 sets of kaamas out there for sale if you look, you can get both for cheaper than building 1 Blackhawk and it still won't be as strong, and props and steering brackets are hard to find. I use to have a Blackhawk and sold it because it didn't think it would live with more than 600hp even if I threw the max machine catalogue at it.you could easily have 10-15k in just the drives.(no transom assemblies, no steering, no props etc.) you might save 100lbs over Kaamas but thats the only advantage. Neat drive for a single, but really no advantage for a twin engine. A 302 with kaamas and 600s runs about 90

Actually with trannys the boat is a little better balanced they do tend to run more flat

Gh700xx let me know if you are going to strip the interior I could use some parts for mine

The cockpit I'm keeping the cabin is mostly stripped already. But if Ya need the head of the tanks for them I will have those out before too long.

TRAMPS Runnin 79mph at 60000rpms second time out flat water Trs drives 25p mirage props turning in engins are Dart 498's.
http://i1189.photobucket.com/albums/...troker/003.jpghttp://i1189.photobucket.com/albums/...ps941452ae.jpghttp://i1189.photobucket.com/albums/...psb5f3ed73.jpghttp://i1189.photobucket.com/albums/...roker/0021.jpg

That's damn good with a lot of trs hanging under the boat.

This thread is getting me PUMPED! I picked up a 311 last Summer...420/TRS deal. We are currently building all new 572's with Konrad Drives. Anyone on here have such a combo? These are going to be "serious" motors...10.4 compression, Hyd. Roller cams, Edelbrock 356 Rec Port Alum heads, Quick Fuel 1050 Dominators, SS headers.....will we see 100???

Konrads are nice but pricey

Yes they are....but I want RELIABILITY with these big motors in front!

Maybe if you survive it :eekdrop::eekdrop::eekdrop:
You definitely need hydraulic steering or that thing will be so squirmy you won't be able to take your hands off the wheel to reach the throttles. lol
Keep us posted and we need pics. :D

Well...I have driven Funny Cars ar 260mph...lol I am Curious about this Steering Issue?? Serious!

Sounds like a nice package, but I think you'd need 4 of them to get that boat to 100

Just as you learned to respect the power of a drag car on land you MUST respect the power in water. Don't ever think that your land experience will help in the water; it won't.
When a hull gets over 70 MPH in water the production steering that comes on a marine package is inadequate to handle the speed and forces of power on that level. If you want safety and you value your skin just the way it is you need hydraulic steering for the kind of speeds your shooting for. It would be foolish to attempt it otherwise. Serious!

I wonder if anyone has notched the transom and raised the x a ways on one of these. Like the fountain is and like some do to the cigs and some scarabs?

bueller??

Got me thinking about the steering....My EARS are Open! Doing some "investigating"...sounds like over 70mph becomes an "issue"?? Stock this ran 68.....but is obviously going to be considerably faster this Spring. I agree on the "RESPECT" thing! Trust me! What have people done with similar boats?? THANKS! Tim

well mine will have either a pair of built 502s or a pair of 496 strokers depends on how much it takes to find a pair of blocks
'

Got both my 420's For Sale?

I got 454 blocks for the 496s but I only have 1 502