Differences in timing covers?
All timing covers interchange, there's the real early ones with no marks which use a seperate bolt on tab then the next group with the marks on the pass aide then the next group (~70 up) with the marks on the drivers side & the next group, the 79 up with the marks still on the drivers side but it uses a seal that drives in from the front (Daves pic) which has the large front opening. You can source the correct cover or get the bolt on tab or find true TDC with the tool in the plug hole (always a good idea) & remark the dampener with a new slit. "Daves" is the much later one (79 up) & it will work fine just get the right later seal for it which drives in from the front. Everything related to the cover mixes or matches as far as fitment is the same (alum/iron pumps interchange).
All timing covers interchange, there's the real early ones with no marks which use a seperate bolt on tab then the next group with the marks on the pass aide then the next group (~70 up) with the marks on the drivers side & the next group, the 79 up with the marks still on the drivers side but it uses a seal that drives in from the front (Daves pic) which has the large front opening. You can source the correct cover or get the bolt on tab or find true TDC with the tool in the plug hole (always a good idea) & remark the dampener with a new slit. "Daves" is the much later one (79 up) & it will work fine just get the right later seal for it which drives in from the front. Everything related to the cover mixes or matches as far as fitment is the same (alum/iron pumps interchange).