I'll definitely post a review. Not really looking for any noticeable performance gain. Still running the crap stock heads/cam. It already looks 1000 times better vs before.
Keith Atlanta
11-27-2017 09:40 PM
Originally Posted by BUP
(Post 4594954)
Just to add - their starting platform was not black side mercruiser it was the GM HP 3 - 8100 with 525 to 550 hp to start with inwhich was a lot better starting point than the Merc HO mag 425 hp. The HP 3 - 8100 used MEFI 4 compared to PCM 555 inwhich early years of 555 no one had a remap program offering.
He may have started with HP3 but when I talked to him there was a bunch of Volvo stuff (still basically the same engine) and the stock intake with redesigned injectors. Just a ton of stuff that was extremely well thought out and time consuming. I think he was over 600 with the mishmash of different parts. I can only say nice things, I talked to him a few times on phone and PM's, always a great guy.
For what its worth, I had the HP3 cam and the CNC iron HP3 heads before my current Raylar set up. The HP3 cam was nuts, the PV clearance with like .030 or something ridiculous (I cant remember exactly but it scared the crap out of me for marine use.) The CNC heads intake ports were paper thin and didnt hold up well later when I ate a piston, spit a valve tulip into another cylinder and the intake ports shattered like glass, poked a rod thru a cylinder. I did drive it for a minute or two after the spoons in a blender sound... but dear lord it was ugly. LOL
Cary 29
11-28-2017 08:41 AM
Depends on what you mean by stock form. I had an HO with nothing changed but a Whipple kit I installed myself. Remapping and a few pullies later. 7-8lbs. Boost, pump fuel probably made 650up. 2004 Superboat 30y2k. Went from 71-73mph to 83-85mph any day. Best 86.7mph in perfect condition s. Merc it's with XR drive. Never broke a thing 6yrs.Ran 5300rpm. Excellent motor.
