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Easy way to add HP to 350 mag ???

Old 03-24-2002, 07:25 PM
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Default Easy way to add HP to 350 mag ???

What are some Ideas currently I have a 350 mag somewhere
in the 280 hp I checked serial it a roller motor if that helps,
I would be happy with about 30 more hp
running alpha 2 1.50 gears thu- hub exh.
all Ideas thanks
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Old 03-24-2002, 07:30 PM
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Depending on what ya want to spend. There are Headers, for beter exhaust flow and if you dont have a budget there is supercharging. Vortech and Procharger both make great marine applications
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Old 03-24-2002, 07:31 PM
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Default Easy???

Thru hull exhaust would be the first step for more hp. Then I'd probably start with heads/intake/carb mods.
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Old 03-24-2002, 07:36 PM
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well you have through hub exhaust, so I would get some aftermarket manifolds and go through hull, will make a good power increase, also go up a pitch on prop at the same time. good luck
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Old 03-24-2002, 07:43 PM
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Hell I haven't done any head work in 15 years exhuast manifolds
and the thru hull would be easy though. how about just carb and exhuast I dont know what carbs come on 92 350 mags
I think its a Rochester I just bought the my women a 1 carat
rock for Valentine's Day so the 8000 bucks I had is gone
otherwise I could do wonders. Plus I'm stuck covering
are Alex Bay Vacation 4 july week and that leave's me about
1500 to put into the motor.
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Old 03-27-2002, 10:44 AM
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I've been told to put on 1.6 ratio roller rocker arms from Comp. Cams. You'll lower oil temp with less friction and your engine will think its running a bigger cam (stock is 1.5). You'll need 350hp to make open exhaust work and with new noise regs, I'm not going there on Inland Waterways. I'm running 56mph on gps with a stock 350/260hp Alpha 1 in my Glastron/Carlson CV-23. If I can break 60 with some mods, I'll be happy. I'm running a 14"/19P stainless factory prop. A 20 or 21P may work with a few more ponies. The 19P planes in 3 sec. I get the holeshot on the Bajas and Scarabs but they do catch up and pass me. They run 63-72mph on 23 and 24P Big Blocks.....Mike.
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Old 03-27-2002, 09:30 PM
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Be careful what u do,that Alpha OD is right at the HP limit.
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Old 03-27-2002, 10:10 PM
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Speed2-??????????????? Merc put 454/330s in front of alphas
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Old 03-27-2002, 10:20 PM
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Default Hey twinn29, alpha/big block...

They all blow up too. Been there, done that. Twice. Got the Bravo One to prove it. They only put the alpha behind the big block in boats wehre the trs tranny would not fit. Such as my 1987 Baja 24 Sport.

You can run 300 hp thru an alpha as long as you don't hole shot like you're pulling skiers. And keep it in the water!!!!! Anything more than that would be putting a time limit on the alpha. A short time limit.
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Old 03-27-2002, 10:31 PM
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i believe all the BB alpha setups used 136 gear ratios as opposed to the normal 150. i believe that is the only reason those alphas had half a chance at living more than a season.
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