|
The headers for the street engine are DynoMax truck headers designed for a 390. The emissions-era FEs have the exhaust ports positioned lower on the head than 427 or 428CJ engines and, of course, the Edelbrocks. These headers were designed to fit the lower ports, so to avoid a major port mismatch, we slotted the header mounting holes so the whole header could be shifted up 0.250 or so. We also took the opportunity to clean up the port inlet with a bur. The photo shows the modified port on the right and the port as received on the left. View Related Article
|
|