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Stock 5.0L: 252 hp at 5,100 rpm, 306 lb-ft at 3,300 rpm
First we established a baseline. We installed 36-pound injectors since we knew the power output would eventually exceed the flow of the stock 19-pounders. The motor was run with Lucas 30W (non-synthetic) oil, an MSD distributor, and a FAST XFI management system. Also present was a set of plug wires and fabricated valve covers from ProComp. Though we hoped to run the stock exhaust manifolds, a snafu resulted in us starting our baseline testing with shorty headers. The shorty headers make an interesting comparison to the long-tube Super Comp headers we eventually installed. Run with the air/fuel and timing dialed in for maximum power (13.0:1 and 36 degrees of total timing), the 5.0L produced 252 hp at 5,100 rpm and 306 lb-ft of torque at 3,300 rpm.