-2 shorties on a step 382
 

Has anyone run -2 shorties on a 382 w/o extension boxes? Putting 572's (700 HP) and IMCO SC's on a 1999 and was considering going with -2 lowers. Using 32P Maximus 5 blade props from Bblades.....anyone done this or something similar? Concerned about getting on plane but I think 5 blades will help.

Of course I have a 353 with -2 Sportmasters on boxes with Maximus props.

Getting on plane with them was and still is not a problem, but I did space them back down 1/2" to reduce the slip up top. I am going another 1/2 this year for a total of 1" and see what happens.

I guess my point is, be prepared to shell out the dough for spacers to dial it in. At $1000-$1200 a set, tuning can get pricey. Dont forget drive oil too, last time i checked they weren't giving that away either. Just giving you the heads up. Good luck!

Dave

I agree with Dave's post. Think you might be playing with fire and ending up spending a ton of money with not much in return. Formula spent a lot of time getting these dialed in, I wouldn't consider doing this on mine.

Not the same thing but I can provide some info. I had a 2002 382 without boxes. I ran a set of 32 Bravos without much issue but tried a set of 32's that were 1/8 smaller in diameter and noticed issues when on plane in crossing winds. One prop would loose it's bite of the water and surge 200-300 rpms occasionally. That 1/8th inch made a difference and based on that I suspect a problem running 2 inch shorties unless they are full 15 5/8 Maximus.

Ok guys. Thanks for the input. I think Ill stick with what I got for now and see how the boat runs with the standard lowers first. Anyone have any speed estimates on my boat with 700'S ??? I know what Brett from Bblades told me it would run, but real world #'s are nice.

thanks again...

Dialed in, I'll take a stab at it...87-91.

Dave

My 540's made 630hp/700tq full dressed on a dyno. 30P Bravos were the fastest (86-87@ 5,600) but I propped the boat for mid-range. 32P Bravos and those oversized Maximus I listed earlier ran 56-58@ 3,500 and 83@ 5,250.

Depending on whether 700hp being a dressed block or not you'll need 32P Bravos and should run over 90 under ideal conditions.

If it runs 90+ , Im a happy man....89 and lower....l:angry-smiley-038:, I'll have some tweaking to do. Brett at Bblades says mid 90's with his props, but I think thats kinda high. We'll see. He has my props now.

you'll be just a touch faster than me....oh wait my gps said 68 not 86 lol

Brett is a great guy! He has done all of my prop work with very good results. You get what you pay for!

Dave

Judging by the beautiful photography in your avitar, your already floating! Leave now and youll beat me to Claudios!
Hahahaha....J/K :angry-smiley-038:

I agree Dave, he's really a cool and informative guy. Spent alot of time on the phone with him over the last 4 boats Ive owned. He was always spot on with the speeds he has given me over the phone in the past.....I hope hes right with this boat also!

It's ok i'll buy first round since my fuel costs should be lower lol funny how slower and lower go hand in hand!

I tried sportmaster 2" lower on my 382 Fastech without boxes, more slip same speed. Went from bravo 26s to maximus 28 and bravo 30s lab.

If your 700hp compares with the Merc 700's then the results should follow. Current relief hull 382's are running 95-96 MPH so that agrees with what the prop guy said. You should realistically be 90++
Good luck. Sounds like you will have a fun season.