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Old 03-26-2009, 10:02 AM   #1
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Join Date: Apr 2006
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125HP increase for your Merc 500 EFI

Our High Performance proven ATECO/DART Pro 1 heads have the combination to maximize your engine's horse power. Take your 500 EFI to 625hp at a fraction of the cost of total engine replacement with our state-of-the-art inhouse built DART Pro 1 Aluminum Marine heads. These specially designed custom built heads include REV Severe Duty Stainless Intake Valves, REV Inconel Exhaust Valves, FEL-PRO Head, Intake, Timing Cover and Exhaust Gaskets, MANLEY Pushrods, ISKY Roller Hyd Cam, Lifters, Springs, Retainers and Locks, ARP Head Bolt Set, True Roller Timing Set and coomplete Computer Reprograming. These power houses come complete and ready to bolt on for $4995.00. NOW REDUCED TO JUST $4299.00NOTE: [u]Our kit includes pushrods . Dyno results (5500rpm/635Hp) (4600rpm/646.1torque)
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Last edited by Ateco : 10-21-2009 at 10:42 AM. Reason: add sale price
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Old 03-26-2009, 01:13 PM   #2
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2000 45 Sonic & 1995 500 Sundancer
Deal for three ??
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Old 03-26-2009, 01:59 PM   #3
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Sure, give Bill a call at 847-623-2737
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Old 03-26-2009, 02:17 PM   #4
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2002 30 spectre 500 efi's
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Deal for three ??
two for me one for you.
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Old 03-26-2009, 07:04 PM   #5
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33 baja
must be magic without a cam change
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Old 03-26-2009, 07:32 PM   #6
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1996, Donzi, 22 Classic 502
Looks like it has a cam change.

Any similar package available for a stock Gen VI 415hp 502 Magnum?
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Old 03-26-2009, 07:43 PM   #7
t630hps actually :)
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must be magic without a cam change
I agree....my 500's are now 540's, Iron Eagle heads, cam, 9.7 compression, TB change and only made 630HP (but fully dressed on a dyno and made 700TQ). I'm skeptical, what rpm are they making 625???
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Old 03-26-2009, 08:48 PM   #8
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Hustler Cheetah w/525's Imco lowers
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FEL-PRO Head, Intake, Timing Cover and Exhaust Gaskets, MANLEY Pushrods, ISKY Roller Hyd Cam, Lifters, Springs, Retainers and Locks,
Roller Hydraulic Cam is included. These heads are good but not that good of course!!!
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Old 10-03-2009, 11:39 PM   #9
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28 Pantera
This has your name on it John.
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Old 10-21-2009, 10:49 AM   #10
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DEAL FOR THREE? Friend and I are both looking for reman engines this winter.
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