1991 Javelin 389T Speed and boat info questions

[dtack_10]

Hello,
I'm looking into buying a used 1991 Javelin 389T single console boat. The boat is in great shape, and I have fished out of it multiple times. I really love the way the boat is set up and the way it fishes. Personally I can't believe that this boat was manufactured so long ago. Either way, my main question is what kind of speed can I expect from this boat. This is not necessarily a stock boat: The set up to my knowledge includes
A 2006 Mercury Optimax 150. I am not sure what the size of the prop is, but it a Tempest. The boat also has a 6" Jackplate. I know that this boat runs very well, and I've been in it while the boat was running 5500 rpms, and I know it could run higher. I was curious what everyone thinks it could run? I know it is set up ideally as the current owner is a manager at a marine dealership, and spent some time with the boat. I am quite sure it is capable of mid 60's speed.
Thank you for your time,

[bxc3518]

I recently purchased a 1991 Javelin 389 SF. All of the writing is worn off above the switches on the Pro-Switch Console. Can someone please send me a photo for reference? Thank you in advance.

[Will Seyler]

I run a 93 Javelin389 tsd. Turning a 25 renegade at 5500
rpm and 30 psi water pressure. Not sure on p2p as ive never measured and I do not have a JP. I'm getting 61-63 fully loaded. 63-67 when I have less than 20 gallons of fuel. This is with 175 intruder. Chinewalks violently over 61 mph though.

[Dubee]

Just ask the owner what it runs.

[Empty Livewells]

I bought a new 389T in 1995, 150 Evinrude Intruder, 24 raker prop, no jackplate. It ran around 60 loaded. Sure do miss that boat!!!