x 1,000,000.

OP, please mix in some punctuation marks, use paragraphs and semi-complete sentences at the least.

I'm not a grammar Nazi, but holy jeebus.

Pull motor and dyno it. All questions will be answered then. If it makes no power then it will be apparent right away. (Cam timing off a tooth? That would be my guess. If it makes power on dyno you either have a fuel, ignition, or drive line issue in the boat. Have you double checked if you are getting wide open throttle?

Whe I bought this motor I put it I boat stock I was hitting 35 40mph I pulled it out sent it in to a engin rebuild shop had oversized 300 small cam and put a elderblock 600cfm on top of the elderblock performer with a holy fuel pump manual was a combo kit from summit racing. Put it in boat and was hiting 50mph I wanted faster so pulled it back out took motor back told the guy need more power he says I was around the 200 hp so we talked told me 250mag was 325 and stuff so I told him want more then that so he did the heads and put a cam in it and polished my air in take . Tells me now he 100% sure its min very min hp now is 350 say more like 375 to 400 but for his on sack says 350 for sure . Now speeds under 50mph I can feel the power it s has but yet still not past 50mph and marina told me gear ratio in foot so went 1.47 to a 1.32 not its only in the 40s mph only diff is I push less throttle but cant get out the hole and 21 prop I have bought 3 props this year 17 19 aluminum 21 23 stainless steel . Have tred them all.. I will be going to c the guy for the motor again to day ask for a specs on motor but I am pretty sure it fine I been thinking it might be air restriction in manifolds or mufflers . I have talked 2 like 4 mechanics and they all tell me diff one say I need . Avedaced timming . Cheak throttle cable carb opens all the way runing 94 oct have timming done at 40 50mph on water other says on trailer at 3000rpm . I just dnt know I thinking cuting out baffles in mufflers . Can andone give me a idea am about to sell boat amd get a camper lol.

Does the boat have 27 layers of bottom paint?? A major hook? If not you need to tell the engine builder to stick with briggs and stratten..

Was this a car engine builder or a boat engine builder?

Are you Jim Darrs son by any chance?

jim,

i thnk u u ned a b3 drve puut a 5bade prp on wth a 3 bld shld ht 60-65 thn

hop this helps

No paintt lol they build all motor s performance, car ,truck s ,boats. They been buissness 45years very well recommended by 3 ppl . The shop very busy I been there a lot and dnt see ppl complaining at all can it be muffler with air restriction

No I see lots of ppl using alpha 1s yes it might fall apart after but shd be working anyway

If I have to spend more effort reading than the person does typing, it makes me feal like I care more than you do, and that's not right.

Sorry bud. I'm not being an azzhole.

If your english is schit because of texting, wait till you can hit a real computer and respond clearly.

Of all people, i can't believe I'm having trouble with your language.

Later.

It is simple, the engine is not making the power. I have a 21ft Larson, 5.0L efi making 270HP. I run 55 at 4900RPM with a 21 3 blade.

sel bot and git kamper


SB please pass the Tylenol