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502 heads on mercruiser reman 454?

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502 heads on mercruiser reman 454?

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Old 12-20-2013, 06:51 PM
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Default 502 heads on mercruiser reman 454?

Trying to do some work this winter to my boat and found I have 12562934 502 heads on a 454 block number 12550313. Anyone else have this?
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Old 12-20-2013, 07:41 PM
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Originally Posted by NickFrantz
Trying to do some work this winter to my boat and found I have 12562934 502 heads on a 454 block number 12550313. Anyone else have this?
if its a gen 5 or 6 block they all shared the same heads for the most part..
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Old 12-20-2013, 08:15 PM
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Should be a 6
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Old 12-21-2013, 01:15 AM
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502 and 454 GM rect port heads are the same.
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Old 12-21-2013, 08:36 AM
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OK I'm new to gassers being a diesel mechanic. I was told otherwise so I'm trying to do some research.
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Old 12-21-2013, 08:51 AM
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FIXX told you GRIFF told you and now i am telling you,THEY USE THE SAME HEADS.
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