XTREME FUEL INJECTION (XFI™) HYDRAULIC ROLLER
Noticeable idle, moderate tuning modifi cations,
strong mid-range. Requires custom tuning.
•RPM operating range: 1500 to 5800
•Advertised Duration: In. 268 Ex. 272
•Duration @ .050": In. 216 Ex. 220
•Valve lift: In. .545 Ex. .548 (valve spring upgrade required for 5.7 application)
•Lobe: 113°