Originally posted by Pacifier
Thanks for the reply, Paul...would you use the stock intake in place of the Weiand or just go ahead and use the Weiand? I could use the stock intake and the stock carb, I just thought that I might get a little more out of it allowing me to get it up on plane a little quicker and with more ease, with the old motor it was a fair load getting up on plane at about 4K. I would like to maybe be able to bring the RPM's up to around 46-48 get up on plane then back off and just cruise at a lower RPM . I'm open for any and all input and advice, thanks again, Rick
Tough call, for your application. Personally, I would probably try the new 750 Carb over the old carb currently on the boat.

Assuming your intake manifold is a production piece, it will have a casting number cast into it, on the topside and next to the carburetor mounting pad. If the number on it is D0OE-6425-C, then this might be a more suitable manifold for your application, albeit a bit heavier than the Weiand. The casting number I gave you is a 460 marine intake that is also the factory 429 Cobra Jet intake (both engines used the same intake manifold). But if it is not the above number, then for sure use the Weiand.

(If your other intake is something else altogether and not a D0OE-6425, then the above cannot apply.)

The Weiand is a really nice piece and your engine will certainly run well with with it; I just wonder if it will cost you a bit of low speed throttle response in such a big boat.

The CJ intake is more suited for 1500-4500 (where your 30- footer's engine operates) than the Weiand which may offer better performance in the upper rpm range than the CJ intake.

On a jet boat that doesn't really hook up until 3500-up rpm's, I'd opt for the Weiand no question. But an outdrive with a prop? In a 30-foot boat? Sorry, I can't say for sure, Rick, but knowing me , I'd give the Weiand and new carb a shot, I suppose. If you want to go 4500 to get on plane and then settle back to 3000-3500, go ahead and try the Weiand...

Paul