thinking of doing these modifications. what do you guy's think. boat has 5ooefi's and bravo's currently with low hour's. Roughly how fast will it go.

I assume you are talking about putting Whipple superchargers on your 500EFI's and Replacing the Bravos with the Arneson ASD6 Bravo replacement setup (with the tranny in the box)?

Whipple on a 500efi will net you close to 700hp on pump gas.
That alone should take you from 81-82 to around 92.
Arnesons should give you 3 or 4 more.

If set up properly, you'll be knockin on 100mph, but I don't think it will quite get you there without a little more.

Stroke em to 540 when you do the Whipple for another 3 mph.
Add good heads and a matched cam and you're over 100 in a Formula on pump gas.

Whipples: $10,000
ASD6 kits: $35,000
Heads, cams, and injectors: $10,000

Less if you do it yourself...

thanx for the feedback.

lots of money to get that speed how reliable would it be with those mods

The reliability will be with the engines and how well they are assembled and tuned.

Speed and reliability isn't cheap, but it aparently can be reliable.

i doubt you will break the arnesons (rik may be biased but he is right.. ) and just make sure the motors are assembled right w/ the sc's and those should last a good long time too...

Sounds cool, but hope you never have to sell it!

What are you trying to say, that Whipples will hurt the resale?

rik,not to hi-jack this thread, but when replacing bravo ones with arneson's what happens to the center of gravity? with the tranny in the box and the length of the drive i was curious....