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Old 03-12-2010, 07:35 AM
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Mechanical Fuel Pump

I have a GM350 motor,the casting number says it was casted between 1980-1985.When i bought the motor it has a block off on the motor for the fuel pump.the motor that came out of my 1978 GMC sierra grande K-1500 was a small block 400.It had a mechanical fuel pump but it was mounted with a 3\16 or 1\4 spacer plate,will i need this plate on my 350??? I am not going to use the old fuel pump, i am going to buy a new one and a new rod,will i need the spacer on this motor or just mount the pump directly to the motor??
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Old 03-12-2010, 07:46 AM
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you need the spacer with the slot in it and you will need to get a fuel pump pushrod too. Pump will not mount directly to the block without oil pouring right out.
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Old 03-12-2010, 08:47 AM
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Use the mounting plate and the rod out of the old engine and just buy the pump.
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Old 03-12-2010, 09:23 AM
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Rod quality questionable

My old rod has a little rust and some other buildup on it,if i clean it will it be good to use
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Old 03-12-2010, 11:56 AM
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pump rod

I don't see a problem. Use some emery cloth and clean it. I painted my fuel pump mounting plate the same color as the engine, Chevy orange!
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