Camshaft Selection/Engine Setup
03-09-2016, 05:19 PM
#22
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This is where I'm at now.
Gen VI 454 .030 over with
http://www.cnc-motorsports.com/diamo...-280-bore.html
And
088 heads worked over
And this cam
http://m.summitracing.com/parts/cca-01-445-8
Standard rods and crank
Performer rpm holley 800 DP. Stainless marine exhaust.
I was rolling 69 mph at 5000 rpm before with 24P Bravo 1
Gen VI 454 .030 over with
http://www.cnc-motorsports.com/diamo...-280-bore.html
And
088 heads worked over
And this cam
http://m.summitracing.com/parts/cca-01-445-8
Standard rods and crank
Performer rpm holley 800 DP. Stainless marine exhaust.
I was rolling 69 mph at 5000 rpm before with 24P Bravo 1
03-10-2016, 05:22 PM
#23
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Thread Starter
Will this cam be an improvement to the stock unit?
03-10-2016, 05:26 PM
#24
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iTrader: (1)
03-10-2016, 05:27 PM
#25
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Thread Starter
03-10-2016, 05:29 PM
#26
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iTrader: (1)
03-10-2016, 05:35 PM
#27
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Thread Starter
I got a clean Gen VI standard block from my buddy because I was uncomfortable over boring my existing block another .030 over. So I am reusing the .030 over pistons and boring the replacement .030 over. The previous cam that I listed had a higher RPM range. I wanted to bring it down a notch as I was only able to spin around 5000 RPM last year. The year before last I was WOT @ 5300 but my slip was too high so I had bblades work the prop over to drop 300 RPM and gain 6 MPH.
03-10-2016, 06:11 PM
#28
Rectangle port heads on a 454 really need to be spun up a little higher to make the most of the combination. Although I didn't see it mentioned here I am assuming this motor is going into the 22 foot Formula in your signature? If so, you don't need a lot of torque with a 454 in a 22 foot boat. Cam it a bit more and let it rev a little higher.
03-10-2016, 06:15 PM
#29
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Rectangle port heads on a 454 really need to be spun up a little higher to make the most of the combination. Although I didn't see it mentioned here I am assuming this motor is going into the 22 foot Formula in your signature? If so, you don't need a lot of torque with a 454 in a 22 foot boat. Cam it a bit more and let it rev a little higher.
03-10-2016, 06:31 PM
#30
I wouldn't hesitate to spin a forged bottom end 454 to 5600 RPM. What was the engine like that spun to 5000 RPM last year? If you are going to make more power with this setup you may just be able to carry the prop currently on the boat to your target RPM.
