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Dead Parrot · 08-17-2018, 01:13 PM

IIRC, a lot of 305s from that time came with the nylon ring timing gear. If so, could be enough wear to cause the cam timing to be off.

Maybe a PO fixed the timing gear and at the same time added the type cam D13 suspects. The PO might also have indexed the cam for extra fun.

08-17-2018, 01:13 PM	#9
Dead Parrot Registered User Join Date: Aug 2012 Location: Oklahoma City, OK Posts: 2,496	Re: Backfire under loads IIRC, a lot of 305s from that time came with the nylon ring timing gear. If so, could be enough wear to cause the cam timing to be off. Maybe a PO fixed the timing gear and at the same time added the type cam D13 suspects. The PO might also have indexed the cam for extra fun.