318 crank pulley correct size??

megavites said

Kuda, educate me. I have the 30787 water pump. This appear to be the cast iron pump (magnet sticks)
So it seems that since I'm planning on replacing the pump, going for the alum. pump would match pulley.
My problem is ...I have a drivers side lower radiator hose outlet. So with current crank pulley..I would need alum. pump, new water pump pulley and passenger side lower hose radiator.

Click to expand...

If you're putting it into a pre-69 body, then you should go with the cast iron water pump. Then it will match the outlet on the original radiator. If you go with aluminum water pump, then you have to change the radiator to the 70 and later style so the outlet is on the proper side... They changed the side of the lower radiator hose outlet from 69 to 70. You also need to get the proper timing chain cover to match the water pump outlet, otherwise the lower hose will block the timing marks... The timing marks also changed sides with the water pump... I find it easier to match the body with the engine. Build the engine for the body that you are going to put it in...

If you run the cast iron water pump, then you will also need to get the proper alternator brackets as they changed for the different water pumps...

You need to tell me what you have and I can tell you what you need to do to get it to work...

Post some pictures of the front of the engine and the engine compartment showing the radiator so we know what we're working with...