WHAT IS MY MARINIZATION?

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Pleasurecraft Marine (PCM) Ford 1986

Commander 351

1985 Commander 351 FWC

Escort 302

Indmar Ford 1992

1994 PCM 351 PTI

351 Ford High Output (H.O.) Cylinder Head

indicated by 3 raised ribs on the end of the head.

2 raised ribs indicates a standard 351, 250HP with hardened exhaust seats.

A flat head, with no raised ribs, indicates a older style without hardened seats, requiring Valve Tech or a lead substitute.

Flat Head and 2-rib heads are compatible, just make sure both take 14mm plugs.

PCM GT40 MPI Bobtail

Indmar GM Carbureted

PCM 454

Indmar 454

1996 Indmar Monsoon I

2000 Indmar LTR

2004 Marine Power 335

2006 Indmar MCX

Mercruiser Mag MPI