For a 468 BBC. Nothing amazing . Nosty motor so it'll probably run 5k - 55k . I kind of already have an idea of what I want . Lookin for some insight since it's always good to get some outside opinions . Thinkin rectangle , iron , definatly not more than 315cc .

-beerjet-

I did several similar "searches" Omar. Dart has a real good rect port, 305cc I think, comes very highly recomended, Canton/Cantfield something like that makes a 310cc rect port that also was very highly recomended. You're right, definately not more than 315 cc which rules Merlins OUT. Racingjunk has the Darts on there quite often. The Darts are iron and the other are aluminum. I was told iron for your river boat and aluminum for your race boat.

I forgot all about the AFR's. A lot of Chevy "in the know" guys like the AFR's. I don't know anything about Brodix other than no one recomended them to me when I was looking.

You must choose a cylinder head before you purchase a piston. All of the above mentioned heads have different valve angles and require different pistons. Are you building a compression motor??

nothing wrong with this, but i went opposite i did my botum end so i can "narrow" down my cylinder head choices...when it comes to chebby motors the possibilities are endless really

Rod your not picking up what im laying down are you

I know where there are some bare Dart Pro 1's for $1099 Brand New. There is nothing wrong with going rectangle on a jet boat. Keep in mind as soon as you plane you are at 3K +++. Jets love fuel and live above 3500 all day. Now if jets need torque, torque, torque, then why do tunnel rams work so well?? Arent tunnel rams a top end puller?? Rectangle will give you the velocity you want and you will have a ton more choices in cylinder heads. My setup is a rectangle tunnel ram matched to a oval port head. Eventually I am changing to a better performance head but Dale at Hondo said it works really well.

lemme start in dummy terms...because someone started talking about pistons and all that technical stuff i think we have gotten off topic...if omar is looking at doing pretty much everything i think he needs to start from the bottum and work his way up...like i said in the aftermarket especially with chevy you can pretty much find anything you want...no one said he needs to go with a top cylinder head like a big chief or some shit...i think he needs to start with the bottum...if he is using this rotating assembly that was included start with that...is it a flat top...is it a dish...or what not...and figure out your cam then top with all the goodies like the head that is most likely to work with that and your cam...cams im dumb there, but have an idea...i think honestly that if you use some common sence and the knowledge of some of the few on here...you can do a really nice BBC setup that will last forever...and make the power you are looking at...in all reality it sounds like omar already knows what he wants...and i see no problem with his decision

Call Jim Brock after 10 minutes of talking to him on the phone you will realize just how little you know about boats and you will hang up and kinda sit there with ur mouth open wondering why 90% of what you were told or want to buy is wrong from everyone else around. Jims knowledge FLOORED me.

hehehe, i love talking with jim

more pictures

To set seat depth gauge on each side of pilot

Very interesting set up, haven't seen it measure that way before