1987 242 ls
09-03-2017, 05:59 PM
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1987 242 ls
Well this is our new baby 87 242 LS with a Magnum 454 still as an Alpha drive which was replaced about 4 years ago. I have been looking for information on Pizzagalli racing engines they did some work to it back when it was fairly new not sure what they did? I haven't be able to find much about them I did find where they used to be located but no phone #. I suspect he has retired but I maybe wrong. I starts an runs great i got about 50 mph on gps at 4800 rpm it was a little rough and I had the bow trimmed down quite tight not sure if it should be turning more rpm? We have had it out a few times but not the last 2 weekends hopefully we will get out on it at least 1 more time before we park it for the winter.
09-03-2017, 10:36 PM
#3
Looks nice, the 87 454mag was actually the 330 horse engine, not the later 454 mag 365horse.
50-52 is a good number for that engine in stock form. Looks like it has an aftermarker intake on it but not sure what other mods it has. The heads were the limiting power factor.
50-52 is a good number for that engine in stock form. Looks like it has an aftermarker intake on it but not sure what other mods it has. The heads were the limiting power factor.
09-05-2017, 06:52 AM
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my stock 330hp '89 runs 52-53 with a Mirage Plus 21p at 4700 rpm, 54 with a labbed Bravo 1 22p at 4500. i would think you have room for improvement with some prop tweaking; what is on it now? i'm guessing it's under propped if your trimmed down and still turning 4800rpm.
Last edited by bbender785; 09-05-2017 at 06:56 AM.
09-05-2017, 12:09 PM
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my stock 330hp '89 runs 52-53 with a Mirage Plus 21p at 4700 rpm, 54 with a labbed Bravo 1 22p at 4500. i would think you have room for improvement with some prop tweaking; what is on it now? i'm guessing it's under propped if your trimmed down and still turning 4800rpm.
09-05-2017, 12:14 PM
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Looks nice, the 87 454mag was actually the 330 horse engine, not the later 454 mag 365horse.
50-52 is a good number for that engine in stock form. Looks like it has an aftermarker intake on it but not sure what other mods it has. The heads were the limiting power factor.
50-52 is a good number for that engine in stock form. Looks like it has an aftermarker intake on it but not sure what other mods it has. The heads were the limiting power factor.
Thanks!! I am not looking to race it I just wanted a good reliable big water boat. I figured the intake wasn't stock I am guessing they might have changed the cam. I just want to make sure it is equipped for optimal cruising and reliability.
09-05-2017, 01:08 PM
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yeah i'd say you're under propped for sure... that looks like a Vengeance prop.
the Mirage and Mirage Plus are much better for our hull... i'd start with a Mirage 23p or a Mirage Plus 21p.
the Mirage and Mirage Plus are much better for our hull... i'd start with a Mirage 23p or a Mirage Plus 21p.
09-05-2017, 01:13 PM
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...guess i should also ask if you know what your drive ratio is on that alpha? but still, if you're turning those rpm's with no trim, i'd still be inclined to think you need more prop.
09-05-2017, 01:44 PM
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Where can I find what the drive ratio is? I was told the drive was replace by the original owner about 4 years ago I am now the 3rd owner.
