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Spark Plug Gap

bullet_bob

New member
"I have 1996 Crusader 454 TBI

"I have 1996 Crusader 454 TBI HO 350HP engines on my boat. The manual says to use either AC Delco MR43T or MR44T plugs and to gap them at .045, my mechanic says to always use MR43T plugs and gap them at .035 because the coil on that engine will be straining to throw a spark that distance at high RPM.

Does anyone know for sure what the correct plug and gap should be?"
 
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