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3V Heads And Cams Testing - On The Port Side
We test FRPP's new CNC-ported Three-Valve heads and a pair of prototype cams on a blown GT.
Thankfully, Pete Epple let us scavenge (temporarily) the coils and boots from his Three-Valve Fox-body project, and the following day we were on the dyno. After a custom SCT tune by Ramsey, we were making power, but boost was down from 10 psi to under 8 psi. Also, the spark was being blown out at about 5,000 rpm. Ramsey recommended a Boost-a-Spark from Kenne Bell. “The higher airflow of the ported heads is blowing the spark out,” said Ramsey. So another favor was asked, and Jim Bell of Kenne Bell obliged, sending us the Boost-a-Spark on the overnight flight. We also called on Innovators West for a 10-percent overdrive crankshaft pulley. The next day, we had our boost back up to 10 psi and our spark living throughout the entire run.
Finally, Ramsey recorded a full, clean pull on the Dynojet. The result was 523 rwhp and 512 lb-ft of torque, a 35hp and 25–lb-ft gain. The real test, though, was at the track. There the GT did not disappoint. The first run of the day produced an 11.63 at 120 mph. Though he couldn’t get back into the 11.60s, McDonald did follow up with an 11.71 at almost 120 mph and an 11.75 at 121.
We test FRPP’s new CNC-ported Three-Valve heads and a pair of prototype cams on a blown GT.
On track, the GT did not disappoint. The first run of the day produced an 11.63 at 120 mph.