Solid Roller, 455R.610"-243'/.620"-248',108', TA_284-88R

Recommended for high end street use or race. Increased midrange power. TA roller rockers required. Needs notched pistons. Fair idle. 10.5:1 or more CR.

VALVE LIFT

TA ROLLERS 1.60 RATIO:
IN: .610”
EXH: .620”
TA ROLLERS 1.65 RATIO:
IN: .628”
EXH: .639”

DURATION

AT .050
IN: 243
EXH: 248
ADVERTISED
IN: 284
EXH: 288

LOBE CENTER: 108
POWER RANGE: 2500-6000

**400-430-455 applications will need to use TA 1106 Lifter Bore girdle, oil through pushrods,
TA Grooved cam bearings and TA Roller Rockers.