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whipple 3.3litre supercharger on a 500efi

Old 10-31-2009, 06:55 PM
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Join Date: Oct 2009
Location: Bracebridge Ont Canada
My Boats: 2000 26' wellcraft excalibur
Posts: 8
Default whipple 3.3litre supercharger on a 500efi

Can anyone tell me what kind of horsepower this will produce.Also is there anyone out there with this set up?I'm installing this in my 26' Wellcraft Excalibur
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Old 10-31-2009, 09:46 PM
Join Date: Feb 2005
Location: Tustin CA
My Boats: Hallett 270
Posts: 240

Should make a little over 700HP. I had a Vortech on my 500efi. Running low boost (5 pounds). Got over 300 hours of trouble free use out of it. Made the boat come to life. 26' American Offshore.
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Old 11-01-2009, 01:34 AM
Join Date: Jan 2004
Location: Tennessee
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About 725 hp. You will be very happy with it. Make sure that the fuel system in the boat is up to par. You need to be sure that there is no anti-siphon valve, the pickup is large enough, and the fuel hoses and water seperator are sufficient. Give me a shout if I can help in any way.
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Old 11-01-2009, 11:37 PM
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Location: Bell Canyon, CA
My Boats: Formula FASTech 382 Sunseeker Apache 45
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Works good!
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Old 11-02-2009, 01:52 AM
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Join Date: Aug 2001
Location: Madison,Mississippi
My Boats: Hustler 388
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I would do it again,its a great kit and can be up graded easily.
Heads would be my next upgrade,your going to break drives.


Heres what I did.
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