Hot Rods '57 347 Pontiac - Fuel Pump Removal

I am using a Carter electric fuel pump in my 347 Pontiac powered Modified. I had planned to just remove the mechanical fuel pump and use a block off plate. However, I have heard that this is not a good idea because the cam follower can go walkabout without the pump fitted.

Is this correct?


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No idea and most certainly don't rely on my singular experience but my 56 317 went years with a block off plate and electric fuel pump. I never ran it very hard though.

 

Thanks... It won’t be a race car either


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The ones I've messed with got the vacuum from the fuel pump for the distributor and maybe the wipers so they'd work when taking off from a stop sign or into the passing lane.

 

I haven’t found a vacuum take off from the pump but this Pontiac engine came from a GMC truck.


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Thats good, 1 less complication to deal with. I wouldn't do it in your case but an electric pump will pump right thru a mechanical, in your case I'd worry about dryrotted gaskets not suitable for alcohol laced gasoline and could lead to serious problems.

 

Premium fuel over here has no or very low ethanol. I avoid cheap fuel for my O/T old car and use only premium at about £1.40 per litre.


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The cam has just an eccentric bolted to the front of the cam and the pump has an arm that will come off with the pump no reason to worry.

 

I can't imagine the outer race causing any grief with it free wheeling . It gets plenty of oil.
If you haven't done so, replace the timing chain . It needs it. Leave the outer race off the eccentric if it makes you feel better.

 

Thanks. Timing chain has been done.


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