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MP 5.7 Ramjet Engine

Redhawk-Driver

New member
Hello all, I have a Duckworth Silverwing 2001 jet boat powered by a Marine Power engine. It's based off of the Cevy smallblock PFI ramjet engine. The service manual I have is specific to the marine power 5.7 engine's and more specifically the Vortec engine.

Does anyone on the forum have this engine? And if so do you use the service manual on the marine power website for pre-2011 engines? I'm trying to find specifics for spark plug gap... type of plugs etc.

Thanks for your help!
 
Ayuh,..... SBCs built before '96 will run perfectly with AC Delco MR43T spark plugs gapped to .035",.....

Post-'96 SBCs, with Vortec heads are perfectly happy runnin' AC Delco MR43LTS spark plugs gapped to .035",......
 
Ayuh,..... SBCs built before '96 will run perfectly with AC Delco MR43T spark plugs gapped to .035",.....

Post-'96 SBCs, with Vortec heads are perfectly happy runnin' AC Delco MR43LTS spark plugs gapped to .035",......

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thanks for the info!
 
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