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Are my headers stock??

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Old 04-06-2009, 09:36 PM
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Default Are my headers stock??

Hi all i just bought a 1988 34' scarab III with twin 454 330hp, and when i was crawing around them today I noticed that the headers did not look stock and they say "GL Offshore" on the sides of them, can someone please tell me if they would be stock or not. Thanks for any feedback!
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Old 04-07-2009, 12:23 PM
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Could be GLM also.
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Old 04-07-2009, 03:09 PM
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Ok guys thanks for the feedback. Dose anyone know the HP gains i would see from them over stock? I am running 23 pitch quicksilver props which everyone is sayin is great for my boat but at WOT the motors spin to 5000 rpm's which is to high for my liking so im thinkin of a 4 blade 22 pitch.
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Old 04-07-2009, 08:17 PM
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Originally Posted by tscarab88
Ok guys thanks for the feedback. Dose anyone know the HP gains i would see from them over stock? I am running 23 pitch quicksilver props which everyone is sayin is great for my boat but at WOT the motors spin to 5000 rpm's which is to high for my liking so im thinkin of a 4 blade 22 pitch.
The gains with a stock engine unfortuately would be none with my experiences however down the road if you decide to do some engine upgrades (450HP or so)they will help then and will perform better than the stock manifolds. At least the gils will anyway.
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