Need 318 Gurus

jonn6464 said
I need some schooling on the mighty 318.

I recently picked up a couple of 318 motors. One is a long block (orange) the other is complete (blue).

I know there are 2 types of water pumps for the 318, and I seem to have one of each on these engines. Blue engine inlet is on the passenger side, orange engine inlet is on the driver's side.

So, the question is, can I use the water pump and PS brackets and pulleys from the blue engine on the orange engine?
Are there other components that are or are not interchangeable?
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Also, the rocker arms and shafts are different. I'm not sure if they are both stock or not. Is there any benefit to one over the other?
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Thanks in advance for any answers.

halifaxhops said
@krazykuda

It depends on what body style you are going to put it in.... You plan it for what style radiator you are going to run...

If you are going to put it in a 64 - 69 body, then go with the cast iron water pump and timing chain cover so the outlets will line up properly with the early radiator...

If you are going to put it in a 70 and later body, then go with the aluminum water pump and matching timing cover....

jonn6464 said
I'm not wanting to swap water pumps, I'm wondering if I can use the alternator and PS pump brackets from the blue engine on the orange. Or maybe there is a different set of brackets that I need to get for the orange engine?

You have to use the proper vintage pulleys also... the late 60's pulleys are different than the 70 and later one... If you mix and match, the belt won't line up properly and you will side load it and it will break sooner....

RustyRatRod said
Before you decide on which front accessory drive to run, CHECK to see if the early cast iron drivers side inlet water pump is readily available. S'all I'm sayin.

You can get cast iron water pumps from Rock Auto....

1968 DODGE DART 5.6L 340cid V8 Water Pump | RockAuto

Then you can get the nipples from Grainger...

66fs said
The damper has the TDC line in a different place and a bolt on tab for the timing marks. The timing tab bolts to the bottom two bolts of the water pump.

You run the vibration damper that is matched for the crank... If the timing marks are off, just put the engine at TDC and make a mark on the damper to match the marks on the timing cover/timing tab... That way the motor keeps its proper balance.... It's easy to re-mark the vibration damper for the different location if needed...