My winter project was to re-vitalize my 1997 version carbed HP500 for my Boat. I really wanted to just freshen it up, but that fantasy didn't last long. It quickly turned into a full build-up. Not a big HP blower motor or anything like that, but (IMO) a solid build for a big heavy lake boat (on a budget)
Here it is in a nutshell;
8.9:1, .030 over 502 GM block (Gen V). Bored and honed with Plates, plateau honed, square decked .015 - .019. Align bored. GM forged crank, micro polished only. Dimple rods, resized and shot peened. SRP 4.500 -3cc dome pistons, JE rings. Pistons are .005 in the hole. Melling HV 1077 pump, standard press. Changed bypass valve to 30# in block and remote pad
Heads are stock 088 castings. I did an extensive bowl blend and opened up SS radius, polished the chambers, 5 angle int, full radius exh, 122 cc chambers (thanks Merc), Milled .010, .100 longer valves with 11/32 stems (REV's), 2.25 int, 1.88 ex. Flowed 358 @ .700. Morel lifters, Crane gold rockers
Dart intake (HP500), Gil exhaust, 800 cfm Holley, MSD ignition system.
Straub Hyd Roller (Squishy ) 650/603, 228/242.
Made 544 @ 5700, 570 tq @ 4100... 510tq @ 3000.
Comes out of the hole like a rocket and accelerates a lot harder than expected. Still haven't pushed any top speed, but got it to 75 with 5 people and 80 gallons of fuel in it. I imagine I can get close to 80 if I work at it, and lighten it up. After I put some more time on it
Chris gave me a lot of good advice, and supplied a lot of the parts for my build, and I'm a very happy customer. Thanks again for all your help Chris.