4/7 swap results

[Bt273]

I have read all the threads on here,and currently have the motor out and would be a snap,I was curious who on here has done it and have really seen results,there must be a reason they make these,I have read the pros and cons but did you guys find a gain???

[steelcomp]

I have read all the threads on here,and currently have the motor out and would be a snap,I was curious who on here has done it and have really seen results,there must be a reason they make these,I have read the pros and cons but did you guys find a gain???If you think you have everything else dialed in as good as possible, then there may be some gains to be had. Contact Chris Straub (CStraub69 here on the boards) and he can set you in the right direction. He's more knowledgable than any one else I know about cam design, and if there's more power to be had by a cam swap, he'll find it. You can also reach him at 423-854-0007...tell him I sent you. :D

[EAZYKILLER2006]

I have read all the threads on here,and currently have the motor out and would be a snap,I was curious who on here has done it and have really seen results,there must be a reason they make these,I have read the pros and cons but did you guys find a gain???
oh i heard swap and i thought...oh ok my bad... as you were... nothing to see here...move along...stir stir stir...:devil:

[steelcomp]

oh i heard swap and i thought...oh ok my bad... as you were... nothing to see here...move along...stir stir stir...:devil:
Hey, how'd you get outa the sandbox...er...I mean sandbar? :notam: :D

[EAZYKILLER2006]

Hey, how'd you get outa the sandbox...er...I mean sandbar? :notam: :D
im a outtie i guess...:) http://www.glamisdunes.com/invision/style_emoticons/default/poke.gif
http://www.glamisdunes.com/invision/style_emoticons/default/hijack.gif

[EAZYKILLER2006]

oh i heard swap and i thought...oh ok my bad... as you were... nothing to see here...move along...stir stir stir...:devil:
wtf? hey? that was f0ckin funny! wtf:( whos tryin to take my spoons away?...i want to stir...:(

[QuickJet]

oh i heard swap and i thought...oh ok my bad... as you were... nothing to see here...move along...stir stir stir...:devil:
wtf? hey? that was f0ckin funny! wtf:( whos tryin to take my spoons away?...i want to stir...:(
That's funny. I read the title and saw that you were the last one to post. Funny how I knew what you were going to say even before I read it :D :D

[EAZYKILLER2006]

That's funny. I read the title and saw that you were the last one to post. Funny how I knew what you were going to say even before I read it :D :D
http://www.glamisdunes.com/invision/style_emoticons/default/hijack.gifdamn... you know me tooooo well...lol...anything for a laugh...
http://i83.photobucket.com/albums/j309/nlgyzia/hi/08.gif
now look what ya made me go and post:) ...

[TIMINATOR]

Jetboats require about 20 HP per MPH gain, if you could get a 20 hp gain, everybody would be doing this. All yuo are doing is changeing the 5-7 sequential cylinder firing for a 4-2 sequential. If your manafold has a quirk that may be fixed, it might help, but 20+ HP, I think not. I have done it on several jetboat motors (450 to 900 HP) and have seen nothing. It won't hurt, but don't expect any help. It has a psych-out advantage anyway. TIMINATOR

[cstraub]

Basically what Tim said. If your application is class racing and you need every bit of HP you can get, then yes you will see a small gain. Also if the engine is a large stroke application, 4.5" and above it does help in relieving some of the torrsional load off the crank. Other then that if you looking for a magic 40HP in a 500 to 700HP range your not going to find it swapping 4/7.