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HYDRAULIC ROLLER - Big
Mutha' Thumpr - Street/
strip, needs 9.5:1
compression, 2800+ stall,
intake, gears and
headers, very rough idle.
RPM operating range
2500-6200
Duration
advertised Inlet 299°,
Exh 319°
Duration
advertised @ .050" Inlet
243°, Exh 257°
Valve lift with 1.7 rocker
Inlet .552", Exh .538"
Lobe separation angle
107°