Some carb / intake info
#11
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I was talked into going with the 4150s by the original engine builder because of the improved driveability. In retrospect I should have gone with the 4500s and matching intake from the beginning. Peak horsepower with the first cams and 4150s was 56-5700. The final 4500 and cam combo peaked at 5600 with 1in spacer and 5700 with the 2 in
Last edited by Black Baja; 10-07-2016 at 04:13 PM.
#12
Charter Member#568
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Thread Starter
I'd tend to agree, but like I said I couldn't buy just to test with and I wanted to know without a doubt I would gain power before I spent $. I considered going larger with the entire induction setup including heads but it was a huge expense. I wanted a money back guarantee on the power I was promised and I wanted the power under 6k rpm, not over. Of course no one would make a promise like that so I went with what was free and then purchased what I could.
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Straight bottoms and flat decks
Straight bottoms and flat decks
Last edited by bck; 10-07-2016 at 04:12 PM.
#14
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#15
Charter Member#568
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Now, those original builds with the smaller cams / 4150s walked all over the dominator combo at lower rpms. They were even at 4600 and then the dominator combo pulled away from 4600 to the end at 5800. I really wish someone had the skills or program to overlay all these graphs.
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Straight bottoms and flat decks
Straight bottoms and flat decks
Last edited by bck; 10-07-2016 at 07:55 PM.
#16
Charter Member#568
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Here's the graph of the 2 4150 pulls. One with spacer and one without. You can see the spacer improved everything. Also this combo with the smaller cam / 4150 easily outperformed the dominator combo up to 4600 then the Dom combo pulled ahead till the end at 5800. Notice this graph has torque on the right on a different scale than hp.
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Straight bottoms and flat decks
Straight bottoms and flat decks
#18
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Now, those original builds with the smaller cams / 4150s walked all over the dominator combo at lower rpms. They were even at 4600 and then the dominator combo pulled away from 4600 to the end at 5800. I really wish someone had the skills or program to overlay all these graphs.
#20
Charter Member#568
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The boat tended to like to cruise @ 45-4600. I didn't spend much time below that so it was a decent trade off for the top end. Even with all that low end torque with the original combo the boat just didn't seem to like cruising at 3500
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Straight bottoms and flat decks
Straight bottoms and flat decks