they ll be duin the first pull tommorow cant wait to see how much hp
blueprinted and tweeked hp500efis
expecting 525 to 575


gellner engineering power!!!!! a' la bob russell baby!!!

525hp at 5300rpm!!!


balanced and blueprinted hp500 efi

What mods did you do?I am going to do mine this winter

no mods just true blueprint, extreme balance and good parts put together well... after the boats running well up the rev limiter and maybe mod the map for a little more... maybe 10-20 hp... the hp numbers were still climbing stong and he feels 5400rpm is NO problem with his internal build

oh yeah and w/ the crank balanced torque WAY up too

Gelner huh? let me know what HP you turn.
I've never had a motor built with out total balance, Thats like checking tolerances, you just do it.

You there to watch? I don't know why, but watching a big hp motor on a dyno gives me goose bumps. Especially when the guy says "That one rattled the windows"

tomorrow running engine #2... tbc

Shah mat,when i watched my 540 on dyno under boost it was hard to imagine it in boat wound out!

And.........


I get bigger goose bumps when the guy say's "That one rattled the neighborhood's windows 5 miles away"