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New Twin 575sci engines 700hp less than 5 hours

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  • 1 Post By Carbon Footprint

New Twin 575sci engines 700hp less than 5 hours

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Old 11-07-2018, 07:55 PM
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Default New Twin 575sci engines 700hp less than 5 hours

I have a pair of 2002 575 sci engines that have been completely remanufactured and are right at 700HP each for sale.
Motors are still in the boat and can be run for any prospective buyer.

LESS THAN 5 HOURS!!

These have the good weiand 256 blowers
Completely rebuilt including but not limited to the following:
Blocks bored .030 over making them 509 ci.
New JE pistons -11cc making the compression ratio 8.53:1
All new clevite bearings
Crank checked and polished
Entire rotating assembly balanced
Heads completely rebuilt including mild unshrouding of valves, new isky 8005 springs and all new manley intake and exhaust valves.
Cams were upgraded to 525efi hydraulic rollers with morel roller lifters.
ARP head studs and MLS head gaskets
Blowers completely gone through and re-stripped by mooneyham
Injectors cleaned and flowed
3.5" pulleys to up boost to 5psi +/-
Oversized aircleaners
Computers regprogrammed by GT performance and rev limiters set to 6k
All new pulleys, seawater pumps, OEM hoses, power steering pump, 120 deg thermostats, and all sensors and sending units.
CMI e-top headers leak checked with o2 bungs installed.
oversized 3" oil coolers
Brand new couplers and bellhousings.

Never seen saltwater, no corrosion, no rust.

These are as close to factory new motors as you will ever find, with the bonus of the extra horsepower through a tried and true recipe used by many.
These are turnkey drop in motors complete from air cleaner to pan, to exhaust and bellhousings.
WILL ONLY SELL AS A PAIR....WILL NOT SEPARATE.
Price is firm at $50k for the pair. I can pallet and drop off at a terminal, you pay for shipping.

Please PM me or send me an email as I don't check here that often.
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Old 11-08-2018, 01:44 PM
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so if there 509 CI what makes them 575's?
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Old 11-08-2018, 02:40 PM
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Mercury Racing made a motor for a few years in the early 2000s that were called a 575sci........ they made 575 hp in stock form with low boost, low compression, flat tappet cam and a VERY conservative tune.
Those engines were basically 500 efi engines with weiand 256 blowers on them. That is what these engines are, but they have been modified as stated above.
Stock GM 502 bored .030 gives you 509 cubic inches.
Sorry for any confusion.

J
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