Help -- First Step

[FJB20]

2000 Z22 Bowrider -- 5.7 - 2BBL --250HP
40 MPH with 4 people and half a tank --Lookin for more MPH so I need some help with a Prop.
Brand New Boater that needs to go faster than 40
THANX! for all your help - I'll probably be buggin till I reach 50MPH FJB20

[Rootsy]

what kinda rpm's are you turning at WOT?

ooops, and what kinda prop are you using now?

[FJB20]

4200 --4400 RPMs Salt Water wasn't exactly smooth but we stayed in for a while THANX!!!!!

[MOP]

Decent cam and a four barrel, maybe through transom exhaust(depends on noise police in your area should get you up there. Get some recommendations up here, I know its been done.

[Rootsy]

probably the easiest and most bang for the buck right off the bat would be going to a 4V intake and carburator setup... when i did this on the 16 with the same motor, with no other modifications i picked up 700 rpm (4400 --> 5100). you have the newer vortec cylinder heads so you may actually pick up a bit more but i can't guarantee it since you have a significantly larger boat than i do.. that 2V really chokes that motor off... the camshaft issue gets a lot more involved and unless you go really big you won't see the gains...

[FJB20]

What a Website -- I Thank You All & I Should Have What Prop's on it now and the Gear ratio for the Alpha as soon as the tide goes down -- Notta Lotta Water here at my slip in Somers Point,NJ

[FJB20]

Can't Wait to Make My Little MODS and Really
Waiting for the Phrase Holy $%&# That's a Bowrider
Will Post Pics as Soon as It's Finished
THANX AGAIN!!!

[Mark Nelson]

I have the same (I think?) boat - although '98 model - called a 21LXR then. I believe my hull is identical to the 22Z's.
Anyway, same motor, alpha drive spinning 19P prop @ 4900 gets me into the 50's easily (2 adults, 3 kids, full tank, etc)

Would like to do some mods as well, but she is so reliable I hate to touch her (i.e. I'd rather be on the water than in the garage) :cool:

[FJB20]

Mark - Stay Close By - Yes -- Our Boats are Identical - My Z22 is 21 feet long -- Now to Add Some info - Alpha Drive Looks Like 1.62 R
Tide not low enough to read the Prop
THANX

[Mark Nelson]

I'm not positive, but I think my drive ratio is 1.50 - the prop is a Vengeance (sp?) - they pretty much came standard with this motor package in 1998. I could turn a 21P for a slight top end increase, but lose some on the low side. (I have had wakeboarders and skiiers sometimes complain about the hole-shot as it is :rolleyes: )

I have talked to a guy with a 99 22Z, 350 - supercharged (mild boost) that claimed 68mph. Don't know all of his engine specs, but I would have to see it to believe it.
I would also be a little wary of putting that much torque through an alpha.

BTW, how are you getting your speed #'s?
My speedometer has not been the most reliable instrument - GPS says 53 (under loaded conditions described above) I've never checked it under "perfect" conditions, weight, etc. but I would expect a couple mph higher.
Yours should run well over 40 in my opinion.
:cool:

[FJB20]

Hand Help GPS 39.8 MPH Trim All the way down
The Three other people were on the large side

[Ranman]

Lighten up the load a bit and trim her out. You'll feel the whole boat loosen up and you'll pick up AT LEAST 5 if not 10mph.

[Mark Nelson]

I agree, you will be suprised when you get that bow out of the water, and let the step "air" out :cool:

[FJB20]

Ok -- Alpha One 1.62R
Revenge Prop 21P
Hope this helps my advisers Thank You All
Especially- Lighten the Load and Trim it UP

[Last Tango]

The fella who got me into all this three years ago, currently owns the same boat as you. He runs about 50 MPH plus or minus a couple, in light chop, brakish water, with a light fuel and passenger load.
Mark :cool: