2013 Ford Shelby GT500 Trinity 5 8 V8
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Testing showed the 5.4's oil pump back plate deforms under heavy load, costing a reduction in oil flow. The simple cure was to replace the stamped rear cover with this billet-steel plate, and voila, no more deformation. Both flow and pressure are increased sufficiently to keep up with the increased demand of the piston oil squirters. The 5.8 oil pump bypass valve is set for 90 psi. View Related Article
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