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-   -   500 efi upgrades (https://www.offshoreonly.com/forums/general-q/318360-500-efi-upgrades.html)

MINK 09-24-2014 01:05 PM


Originally Posted by 33outlawsst (Post 4192588)
Your running low to mid 80's with stock 500 efi's ??

down hill.

598 09-24-2014 01:08 PM

Yep , 83 to 85.6 on two gps . Hits the rev limiters with 30 pitch labs.

MINK 09-24-2014 02:03 PM


Originally Posted by 598 (Post 4192594)
Yep , 83 to 85.6 on two gps . Hits the rev limiters with 30 pitch labs.

Thats rolling for a heavy boat and that power, what are your speed goals?

598 09-24-2014 02:27 PM

I know it's hard to believe ,I didn't believe it when we were looking at the boat till I drove it. Upper 80s to 90, I think the hull can handle it.

Wildman_grafix 09-24-2014 02:29 PM

Has anyone put one on a dyno with the Aetco kit? (Heads,cam,reprogram).

SB 09-24-2014 02:33 PM

From what I have seen, the 500EFI intake limits motors to just about 600hp.

Thus why Tyler Crocket makes the top mount throttle body conversion....for more power.

Also, why others switch to a more conventional EFI intake (Holley Single Plane and etc) if looking to make more steam.

Knot 4 Me 09-24-2014 02:44 PM

Brad Smith was able to get right at 600 HP on a pair of 500 EFI's for a buddy. Bored, new pistons, cam, head work, new injectors, PCM remap.

F-2 Speedy 09-24-2014 02:56 PM

Whats the length and weight of this boat

598 09-24-2014 03:30 PM

34 ft 8000 to 8500?

KSFLYER1 09-24-2014 04:21 PM


Originally Posted by 598 (Post 4192512)
The motors have 350 hrs ,the heads were gone through at 300.the boat has xr drives . I'm thinking of opening up the motors at 400 hrs. It currently runs mid to low 80s.

Wow, I scratched my head on that one. Want to trade 500 EFI's?


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