Menu
Forums
New posts
Search forums
Calendar
Monthly
Weekly
Agenda
Archive
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Help Support Hardline Crawlers :
Forums
Rock Crawling Forums
General Discussion
70's jet boats
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="hink311" data-source="post: 512145" data-attributes="member: 5144"><p>There is a lot of good info on the jet boat performance web site. I can tell you from my past experience it takes a lot of $$$$ to make one go fast. The speed is definitely in the pump. I was very lucky to have one of the best boat builders in the country by the name of Jim Youngblood guiding me in the right direction ( Google his name and you will see what I'm talking about ) You can put all the motor you want in a boat but if the pump doesn't have the correct impeller it will be all show and no go. As far as the huge rooster tails you get that from a jetavator as far as a performance helper it isn't it just directs the water from the pump into the air. My opinion a big block is the way to go can't remember but for some reason the cams with a 112 duration works really good in those motors I had a boat similar to the picture you posted that had a 500 cubic inch big block Chevy a Berkeley jg pump with a b impeller the best speed I ever got on gps was 68 In order to get the 90 to 100 mph that I wanted I was about to build a 572 bbc and go to a dominator pump in which was going to be a huge expense I will tell you this they are a lot of maintenance I now have a pickle fork hull with a outboard. You can take it to the lake. Hit the key run a 80 mph for a whole lot less $$$ and work I know the jets are great sounding and fun but a outboard is a lot user friendlier</p></blockquote><p></p>
[QUOTE="hink311, post: 512145, member: 5144"] There is a lot of good info on the jet boat performance web site. I can tell you from my past experience it takes a lot of $$$$ to make one go fast. The speed is definitely in the pump. I was very lucky to have one of the best boat builders in the country by the name of Jim Youngblood guiding me in the right direction ( Google his name and you will see what I'm talking about ) You can put all the motor you want in a boat but if the pump doesn't have the correct impeller it will be all show and no go. As far as the huge rooster tails you get that from a jetavator as far as a performance helper it isn't it just directs the water from the pump into the air. My opinion a big block is the way to go can't remember but for some reason the cams with a 112 duration works really good in those motors I had a boat similar to the picture you posted that had a 500 cubic inch big block Chevy a Berkeley jg pump with a b impeller the best speed I ever got on gps was 68 In order to get the 90 to 100 mph that I wanted I was about to build a 572 bbc and go to a dominator pump in which was going to be a huge expense I will tell you this they are a lot of maintenance I now have a pickle fork hull with a outboard. You can take it to the lake. Hit the key run a 80 mph for a whole lot less $$$ and work I know the jets are great sounding and fun but a outboard is a lot user friendlier [/QUOTE]
Insert quotes…
Verification
Post reply
Latest posts
2-2.5 ton Rockwell’s new in crates
Latest: Piros 1
Today at 2:42 AM
Off Road 4x4 Parts For Sale
For Sale
Jeep TJ tube buggy for sale $32,000.00
Latest: Piros 1
Today at 2:41 AM
Vehicles For Sale
T
For Sale
85-91 Ford Kingpin Dana 60 $2k
Latest: truck-oholic
Yesterday at 3:58 PM
Off Road 4x4 Parts For Sale
Pluging holes
Latest: baldduck74
Wednesday at 3:56 PM
General Discussion
Trail gear hydro assit on a toyota
Latest: baldduck74
Monday at 12:27 PM
General Discussion
Forums
Rock Crawling Forums
General Discussion
70's jet boats
Top