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Graymarine Inline six
#5182 10/24/04 03:46 PM
Joined: Oct 2004
Posts: 11
Prosser,WA.
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supertraction Offline OP
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supertraction
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Joined: Oct 2004
Posts: 11
Prosser,WA.
Does anybody know Graymarine motors. While looking at some old woodie boats I came across a Graymarine 427 c.i. straight six. I found several shops that still service,rebuild,and custom build these motors. It seems there were many Graymarine powerplant options and all seem to be GM based.
Re: Graymarine Inline six
#5183 10/24/04 04:48 PM
Joined: Apr 2003
Posts: 229
Longmont, CO 80503
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Ed Pruss Offline
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Ed Pruss
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Longmont, CO 80503
Probably that one was a Continental 427 w/ marine head.

Ed Pruss
Longmont, CO
Re: Graymarine Inline six
#5184 10/24/04 07:23 PM
Joined: Apr 2003
Posts: 316
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EVILDR235 Offline
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A guy at work has a Gray Marine flathead 4 banger that was made in 1939.I emailed Gray Marine and they sad they still have parts and information on it.I have also seen lots of Gray Marine related items on Ebay.
EvilDr235
Re: Graymarine Inline six
#5185 10/25/04 09:17 PM
Joined: Oct 2004
Posts: 204
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Bald Eagle Offline
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Sounds like a 6-71 Jimmy diesel to me. Graymarine converted thousands of these during WWII.
Re: Graymarine Inline six
#5186 10/26/04 11:46 AM
Joined: Apr 2003
Posts: 229
Longmont, CO 80503
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Ed Pruss Offline
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Ed Pruss
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Longmont, CO 80503
He said it's a flathead, therefore no Gimmy.
Re: Graymarine Inline six
#5187 10/26/04 02:12 PM
Joined: Oct 2004
Posts: 204
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Bald Eagle Offline
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Actually, he didn't.

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