This is what it looked like when I bought it. Not a whole lot of these got made :thankyouthankyou:

http://i1268.photobucket.com/albums/...pse2c4b203.jpg

Manifolds were on it.
Spitfire ignition was acting up, had to go, went MSD which lasted about a month, then DUI ever since.

Do you guys think i could reach 80mph with my Nova? With the stock 454's i was doing 70mph without opening it completely , too bad they got water in and had to get rid of them.

Rule of thumb is 20HP for 1 MPH- and you are asking for 10 MPH.

You're probably picking up close to 200 HP in total (assuming each side can deliver about 450 HP..actually youd be better if you can deliver 450lb/ft) and pulling weight of the rear so you are in the ballpark.

That rule "holding" or not will be very dependent on your hull. It may be fairly straight and youll be able to push it to 80, or it may be loaded with hook and or rocker to keep it on plane at a low speed and even an anti matter reactor wouldn't push it there - I just dont know.

You'll have to do some prop work as well.

Uncle Dave

80 isn't out of the question, but you'll need the right props. Get something on there close and then you can talk labbing etc. I didn't think that Nova had a hook, have you ever checked it? If it does, then I say no...

Diego...hook or no hook...when you're past 60~65 that hook if you have it isn't in the water. I know with my 272 LS with 640 Horse Power (Twin 320 EFI SBC's) I could squeeze 75 from it running 23" Cleavers at close to 6000 RPM. I chased my boat a few times with a friends 35 Cigarette Mistress....the 272 hull was barely in the water at 70 in 2~3' seas. I had the trim tabs in the factory location outside next to the chine and they became useless at that speed because they weren't in the water.

I think 80 is possible with the right props...but you will have your hands full. Chine walking is some scary $hit the first time you feel it and takes some practice to trim your boat to minimize it.

For my money...your best focus isn't on what it will do as an absolute top speed but rather propping it to run long distances at 50~60 MPH. The beauty of the torque and power your building is to reliably be able to run 50~60 MPH.... hours at a time with out straining the equipment...or your peace of mind.

When I get you running with me across 60~70 miles of open ocean in a bit over an hour you will come to appreciate what I'm talking about. I used to run that '86 272 from the Ft. Lauderdale/Port Everglades Sea Buoy to Bimini Harbor in 45 minutes...we had a group of Formulas, Donzi's, Novas and Scarabs called the "Bimini for Lunch Bunch":evilb:

I have to say...running a sweet running sport boat across the Gulf Stream between Florida and the Bahamas at 60 MPH is one of the best feelings you can have...with your pants on:evilb:

I would think that would depend on where the hook is.

I would agree that above 60 "hook" on the mid to forward 3rd of the boat is meaningless.

If the hook is on the rearmost 1/4 of the boat then it can be quite meaningful on some boats- others not so much.

One story...

http://www.offshoreonly.com/forums/b...29-outlaw.html

Sprinks description of the tabs being useless at speed is the reason I mounted mine the way I did.



UD

Mill before and after crossover installation...

Much simpler but a freshwater only deal for sure.

Uncle Dave

Agreed, generally I refer to a typical hook as one on/near the transom. Very boat dependent. I've seen boats with enough hook to stay on plane at so so low of a speed it's ridiculous. Getting to 80 would be near impossible on something like that

i like the way it looks , how much $$$ for a set of those tabs?

John,

I would love to see that happening , will go see the boat , i have no clue if it has a hook or not , excuse my ignorance.

i agree with you on the cruising speeds !!! that is the best part of it.