Quote:
Originally Posted by CompClassics
427 = two pumps running at the same time from the same power source, only problem is when one pump shorts to ground and fails (blowing fuse) both pumps fail, even the good one! There was no mechanical pump on the 427 Cobra.
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All the evidence points to the contrary. There was certainly a mechanical pump fitted to 427 Cobras. What I couldn't say for sure is whether there was an electric pump on road 427 Cobras.
On the Race and S/C cars there was a pair of SW240 pumps connected to a lower pickup in the tank and a mechanical pump connected to a "main" pickup slightly higher in the tank. Two separate fuel lines ran forward and T'd together just beyond the mechanical pump. The electric pumps were only used for priming and reserve with the mechanical pump acting as the sole pump at all other times.
The SW pumps have a none return valve to prevent back flow.
Paul