Looking for 400hp small block for cat
#31
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They are EFI and drive by wire, they can run analog or digital dash. They come with aluminum exh. manifolds. CMI's are available for a significant upcharge and not worth it in my opinion.
#32
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The boat had IMCO SC's with SC lowers. Sitting on IMCo extension boxes.
I already talked to Predator about building me one, Arnaldo said no problem, small blocks or big blocks, up to me.
Last edited by Philm; 12-13-2011 at 08:11 PM.
#33
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There was an article in Powerboat, back in '08 i believe. You can buy the article from Powerboat magazine, $3.99
The boat had IMCO SC's with SC lowers. Sitting on IMCo extension boxes.
I already talked to Predator about building me one, Arnaldo said no problem, small blocks or big blocks, up to me.
The boat had IMCO SC's with SC lowers. Sitting on IMCo extension boxes.
I already talked to Predator about building me one, Arnaldo said no problem, small blocks or big blocks, up to me.
#34
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ignorant SOB arent you, seams to me I know quite a few 110+mph 30' and 28' cats with twin 300HP egg beaters that will run. I think you need to start reading a little about the subject HP to weight ratio. The Ls engines that the others have mentioned are putting up bigblock power without the weight.
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I would figure that the lowest you could get out the door would be in the $160k range for a brand new custom 30' cat.
Someday.....
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Don't forget, Ilmor has two small block MV8 engines from our new line with over 400hp - the all aluminum 6.2L at 430hp and the performance-based 7.4L at 522hp. Check them out at: http://www.ilmor.com/en/marine/recreational/
#38
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you are going to limit out those small blocks pretty quick and start to lose reliability.... Just the CMI on the LS engines start at 4k!
Stick with big blocks! Depending on the boat, the weight might actually help keep it settled at speed.. If you had Merc 454/502's you can rebuild them to 500HP+ for cheap and kill the small blocks and be super reliable! Then down the road.... convert you Big blocks you invested a little money into and add some blowers, now you are talking the speeds you are wanting to reach!
Twin 400hp in a 30 cat is likely to only go 85+? ....depending on the boat and the set up of course. Inboards and outboards are playing different games so you really can not compare...
Another thing to consider is, it depends on the boat how fast it wants to go.... Not all boats are created equal and there is no exact equation to HP vs Speed!
Eric
Stick with big blocks! Depending on the boat, the weight might actually help keep it settled at speed.. If you had Merc 454/502's you can rebuild them to 500HP+ for cheap and kill the small blocks and be super reliable! Then down the road.... convert you Big blocks you invested a little money into and add some blowers, now you are talking the speeds you are wanting to reach!
Twin 400hp in a 30 cat is likely to only go 85+? ....depending on the boat and the set up of course. Inboards and outboards are playing different games so you really can not compare...
Another thing to consider is, it depends on the boat how fast it wants to go.... Not all boats are created equal and there is no exact equation to HP vs Speed!
Eric
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They tested it with 390hp small blocks at 105 mph, before fine tuning, it might be the fastest 30 + pleasure cat, will check on weight