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7.4 310 H.P supercharged ?

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7.4 310 H.P supercharged ?

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Old 08-07-2005, 04:33 PM
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Default 7.4 310 H.P supercharged ?

Hey has anyone done this and what are the results? please give me your input whipple is offereng a set up for it once again. also who sells the kit at a good price ? im very interested in doing this on my Donzi 22zx 310 HP 7.4 with dana headers
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Old 08-07-2005, 04:58 PM
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Default Re: 7.4 310 H.P supercharged ?

Take the money you would spend on the blower, combine it with the money you can get out of your motor, and buy a 502 or carbed hp500. You will be a long ways ahead with longetivity, and at resale time you will be WAY ahead....

2 cents worth.....
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Old 08-07-2005, 07:39 PM
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Cool Re: 7.4 310 H.P supercharged ?

Thanks for the advise but would like to hear results from people who actually have them on there own boats or had one. buying another engine is an option but like to talk to a person who currently has one installed or had one i like to know the actuall ups and downs.
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Old 08-07-2005, 08:45 PM
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Default Re: 7.4 310 H.P supercharged ?

I've never tried it or heard of anyone.

BUT, the 310hp has cast pistons, peanut port heads, and lighter rods than a 454 mag. The cast pistons are the weak link followed by the rods.

BTW, I have the same engine (1989 version) so I'm in the same boat (pun inteneded). I have a plan to get to 400hp this winter without a supercharger.

If I had $2k to spend on my engine, I'd yank it in a heart beat and drop in a big cam'ed 502 with a nice tall single plane intake knocking out +500hp!
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Old 08-07-2005, 08:51 PM
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Default Re: 7.4 310 H.P supercharged ?

Found this over at hotboat.com forums.

http://www2.hotboat.com/forums/showt...&highlight=330


Seems some have done it with apparent sucess. Keys seem to be 1) low boost, 2) doing everything possible to avoid detonation, and 3) no increase in revs.
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Old 08-08-2005, 12:27 AM
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Re: 7.4 310 H.P supercharged ?

Thanks for the Link !!
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