273 -318 swap information needed
On the water pump issue - you can just swap water pumps without swapping the timing cover. Downside is that the lower radiator hose will partially cover the timing marks. However, if you put the 273 damper and the 273 timing mark that bolts to the bottom of the water pump, that will solve that problem. Of course, if you do all that, might as well just swap timing covers, too. Also, the 273 pulleys and alternator bracket will fit just fine on the 318 (if it's a non-air car; with A/C, I don't know).
I'm running my original 273 timing cover, bolt on timing mark, harmonic balancer, alternator brackets and pulleys, (new stock replacement) water pump, thermostat housing and upper radiator hose, and original but recored radiator on the 340 in my 65 Barracuda. I have also, in the past, run the later aluminum water pump and later (71 Duster) radiator. All that will fit, too, but won't leave room for a clutch fan if that's important to you.
On the water pump issue - you can just swap water pumps without swapping the timing cover. Downside is that the lower radiator hose will partially cover the timing marks. However, if you put the 273 damper and the 273 timing mark that bolts to the bottom of the water pump, that will solve that problem. Of course, if you do all that, might as well just swap timing covers, too. Also, the 273 pulleys and alternator bracket will fit just fine on the 318 (if it's a non-air car; with A/C, I don't know).
I'm running my original 273 timing cover, bolt on timing mark, harmonic balancer, alternator brackets and pulleys, (new stock replacement) water pump, thermostat housing and upper radiator hose, and original but recored radiator on the 340 in my 65 Barracuda. I have also, in the past, run the later aluminum water pump and later (71 Duster) radiator. All that will fit, too, but won't leave room for a clutch fan if that's important to you.
