5,000-20,000? If your going to go boosted I'd figure on the higher figure to do it right and have it dyno tuned. When I did my rebuild last winter on my stock 6.2 we pretty much changed everything but the block, crank and accessories and when all things considered it was in the ballpark of the high figure as stated, however that was a Polished EFI Whipple, alum heads, forged dished pistons, cam, rockers, 7 qt oil pan, added a oil cooler, along with adding a intercooler strainer and seperate thru hull fitting to supply it, your 502 if still healthy shouldn't need as much in the lower end but things add up quickly, very quickly!! If I had to do it all over again I'd do it just the same. The trial run after the re-power was priceless, when I let off the throttle and the GPS speedo was still climbing cuz the speed hadnt cought up with the speed of the boat was impressive to say the least . Just be prepared to spend about double what you think your going to and you won't be dissappointed when you do. Steve
2006 CLASSIC 18 WHIPPLED MX 6.2, BRAVO 1, STAINLESS MARINE EXHAUST, LATHAM STEERING, IMCO 2" SHORTY, LABBED MIRAGE PLUS
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