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Discussion Starter #1
Just recently bought this boat from a friend. Don't know much about it, but it seems pretty unique. Maybe someone can educate me. My friend said it does about 40mph at 4500rpm. He is not sure if it is getting WOT so I will check into it. Just trying to learn what I can about it.

327 with Berk pump
Edelbrock log headers
Edelbrock risers
Edelbrock intake
Holley 600 carb
Mallory distributor
Through hull exhuast
Place diverter











 

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cool set up, never seen one before, that hull design will never be fast but it looks very clean and well done, enjoy the ride!!
 

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Thanks for the positive response. I was thinking about doing a little cam, vortec heads, and updated intake manifold just to give it a little more. 50mph would be nice to see. I do not know if that is realistic, but would be nice. Any more background on the boat is welcomed.

Ryan
 

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Discussion Starter #6
Thanks. I am looking forward to some warmer weather. The Midwest isn't very consistent when it comes to weather conditions.
 

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IMP = Iola Molded Plastics. Built heavy and handle the rough very we'll. Aztec is a 20'r if I recall. SBC and a squirt drive isn't ever gonna be fast but that hardtop is rare and in good condition.

I really wouldn't spend any money trying to make it go faster...just add some cocktail holders and enjoy some early evening cocktail cruises.
 

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Discussion Starter #10
I know it won't ever be fast. I guess I was just looking for a little more sound out of it. Nothing crazy. It is 20ft. That is great info. I didn't know what IMP stood for.
 

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Thanks for the positive response. I was thinking about doing a little cam, vortec heads, and updated intake manifold just to give it a little more. 50mph would be nice to see. I do not know if that is realistic, but would be nice. Any more background on the boat is welcomed.

Ryan
If you are going to do anything, your plans should include a larger displacement small block, with the appropriate cam etc. Everything from this engine should bolt up. (Unless you go to Vortec heads, where you would need a new intake)

Doug
 

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Discussion Starter #12
I had considered that. 400 small block would be cool. I have been doing a bunch of reading on this site. It would be next season before I did anything. Might just freshen up the 327. Keep the nostalgia of the boat.
 

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Iola, Kansas was the birthplace of your boat. IMPs made from about 17' to 23'.

Old family friend had one same colors as yours, without the hardtop and an OMC out drive coupled to a 307 SBC. Didn't run too much faster, maybe 45 mph.

If this is your first jet drive, know that the boat will only turn while under power. In a panic situation, normal response is to get out the throttle...that'll make the boat straighten out...turn hard and throttle harder to get around and thru whatever pops up in front of you.
 

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Discussion Starter #14
Thanks for your advice. I grew up at Lake of the Ozarks. Been on the water a long time. Friend had a SeaDoo Speedster that we ran around in all the time. I live in Burlington, KS now. I didn't realize it was made so close to where I am. The boat spent most of its life on Perry lake near Lawrence, KS. My buddy said that most of these boats came with that OMC setup and to steer clear of them. This will be my first boat since my childhood so I am pumped.

Ryan
 

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Just looked thru pix again and spotted a no-no. Ditch that plastic inline fuel filter up by the carb. Plastic can become brittle with the heat in the engine compartment then split. Same filter is available with a metal housing...go find one please.
 

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Discussion Starter #16
Thanks for pointing that out. I will get that changed. If anyone notices anything else that could be improved please let me know.
 

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Ey

Another pass thru pix and spotted the old school intake manifold with the oil fill tube there rather than in the valve covers like later models had. Guessing that this thing is all OG (original).

<<< lots of smiles again...
 

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Discussion Starter #18
Yes it is. A speed shop in Lawrence put all the edelbrock parts on. The Holley carb is newer but the rest is unchanged
 

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Holley

Take the flame arrestor off and check if the Holley has the vent tubes which are curved back toward the venturies. If not get a marine style because if it ever floods over and starts burning it will be a sad day.
Auto carberators have the wrong power valves and main jetting and . And like was said before, replace the fuel filter.
I once had a customer around 1975 who had one of these boats with the OMC. I could not believe how nice that boat was.
 

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2 more...I see a flag pole mount on the stern deck, center. Get yourself a small wooden flag pole and fly Old Glory proudly...

Secondly, does the all around white navigation light forward of the windshield extend up and light with the red/green and stern 180* light? USCG rules have changed and require the red/green Bow lights AND a 360* all around white 3 meters above the highest point on the boat. I'd guess that the bow 360* is switched to light only as an anchor light and is off when red/green and stern 180* are on. No issue if you don't boat at night but it's not compliant if my guesses are correct.

Can you tell that I love this old floater?
 
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