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    Gear change on alpha one drive

    I have a 1989 larson senza with a heads cam 454 . Problem is I have a 1.8 or 1.9 alpha one drive so your rpm's are crazy . Question is do I need a new drive or can I just get an upper to change to a 1.46 or 1.5 gear ratio, what changes the gear ratio in the drive
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    Steering locked up on 1989 Larson senza 210

    Well I started to pull the cable off the back of the boat and it seems the sleeve is stuck or the cable is stuck in the sleeve. I can't tell what's the sleeve and what the cable. I pulled the pin at the end and there a alum looking shaft with a end that turns with a hole in it, is that the cable...
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    454 what flywheel and cast or steel crank

    Just picked up a 454 I was told it's a 80's block but I can't read the numbers. I need a flywheel and have no clue what one I need. How do I know if it's a cast crank or steel and what flywheel I need.
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    Is this a good marine cam it came in my 454

    I trashed my 350 last year and just picked up a 454 to swap. What's needed to do this, will the mount need to move or bolt up and what about the flywheel is it the same one on my 350. The 454 I have cam with this cam will it work for a marine cam. The cam is by a custom cam grinder Camcraft...
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    alpha one problems

    Its a 1989 larson senza 210lx with a alpha 1 SE drive and 350 engine . Well i pulled the drive do to a over heat problem and found some things. First the impeller looked pretty good but the housing was bent inside and the plastic had melted and the rubber bushing on top was trashed. Now...
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    350 riser bypass

    My boats been running 160 and shoots to 180 at times. My manifolds get real hot and sometimes they make noise like they boil inside. It has a after market 90 riser that seems to move very little water and the bypass moves all the water out the riser. Is there a way to re pipe a line out of the...
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    1989 larson senza 210

    does anyone have info on these boats. Weight , stock speed ,stock prop size , any info would be great. Mine does around 55 mph right now with a heads cam 350 but only revs out to 4200-4300 with a 21x14.25 prop
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    senza 210 prop help

    Need help with a new prop size. Heres a run down, 1989 larson senza 210 with a alpha 1.5 drive. Chevy 350 , heads , intake and comp 268 cam motor. Engine runs around 4200-4400 rpm and 54-55 mph on gps. The prop is a ss mich 14.25x21 . Iam looking for more top speed and think maybe a 19...
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    crank balancer wont go back on after cam swap

    I just swap my cam out and tried 2 balancers and both wont go back on the crank. They go about half way on and stop. Anyone ever have a problem like this.
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    heads cam 350 l89 larson senza wont rev over 4300 rpm will this cam swap help

    I'll try to make this short. the cam must make power to high maybe. Should i try to advance the cam to drop the power band 500 rpm or so lower in the rpm's The 350 engine wont power past 4300 rpm with a 14.25 x 21 mich wheel SS prop. Its in a boat that's 21ft 1989 larson senza i would guess is...
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    eldebrock 1409 wont run right GS 350

    My brother just installed a eld 1409 carb on a 350 and it just wont run right. It runs fine WOT and idle but around 1400-1500 rpm it seems to bog and try to stall out if you hold the thottle there. I pulled the carb and cleaned it and re jet the thing. I tried to lean it out but it still does...
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    what is the deal with a alpha one se106

    I have one on my boat but i dont have a clue what it is over a reg alpha one.
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    1989 larson senza 210 lx seats

    Seems to be hard to find stuff for this boat like the seats and stuff. I'am looking for the back bench seat and rear deck cushion, my question is, does anyone know if any of the other larsons use the same seats or something that my fit
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    need a 17" by i think 14 1/4 prop for alpha 1, where to find one

    I have a 21 right now and need a 17", anyone know who might sell a cheap new or used prop. 3 or 4 blade Also whats a good brand
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    water in head port

    I pulled my manifolds today to find that 2 of the head ports had water in em. What will cause water to draw back down to the valves. Also the water that dumped out of the exhuast manifold smells stagnant like its not moving so good. Maybe i have te water line piped in wrong The engine is a...
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    cam swap help

    i need to pull my 350 to put in a new oil pump in this week. I dont think the cam i have now is a good fit since it only revs to 4200 rpm and the power band is 2000-6500 or so. Here is the cam i have now Comp Cams 12-244-4 "Xtreme Marine" Hydraulic Flat Tappet Camshaft & Lifter Kit Fits...
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    lost oil pressure today with 50w oil

    Well i started my 350 engine up two days ago and had 43psi of oil pressure with 10-40 oil on start up. I then changed today to 50w oil and on start up it was fine, then a soft tap started and next thing you know the rockers where tapping bad . I looked down and 0 oil pressure now. I pulled...
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    edelbrock 1405 vac ports

    Anyone know if the pcv vac port on this carb will work or should i try to put a 90 on the air cleaner and let the carb pull vac for the pcv valves. This is on a 350 Not sure if that port on the carb pulls vac at WOT or not
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    Flame Arrestor change or not

    My 350 engine flame arrestor has no ports on top for the pcv hoses. I have em hooked up to the eldk 600 carb port on the bottom but WOT seems to not work so well. Do you think a new flame arrestor that has the ports on top would work better.
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    fuel and msd billet dist questions

    I run a 350 engine with pro line heads and a comp marine cam, around a 503 lift [ dont have the specs on me] , Stealth intake and eld 600 carb. I run my fuel pressure at 6 1/2 psi is this a good place to start. And i was told to set my timming to 9* at idle, this is with a msd billet...
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