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Search: Posts Made By: harrisdm

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Forum: Do It Yourself, Boating on a Budget

06-18-2017, 03:46 PM

Replies: 20

late valve timing

Views: 10,493

Posted By harrisdm

Thanks for the response dereknkathy. As you...

Thanks for the response dereknkathy. As you suggested I sent 232 a PM. As for your question about the 502-- It is the standard GM marine 502 425 HP roller rocker crate engine so I assume it is an ICL...

Forum: Do It Yourself, Boating on a Budget

06-18-2017, 01:53 PM

Replies: 20

late valve timing

Views: 10,493

Posted By harrisdm

232 did you ever resolve the low manifold vacuum...

232 did you ever resolve the low manifold vacuum issue with your 454? I have an almost identical problem with my 502 MAG MPI after installing a new long block(everything but the intake and exhaust...

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