Rockers

Ford - 4.6L & 5.4L 4 Valve
Performance level - Stage 4 - Race grind. ECU mods and tuning required. Rough idle is expected.
INT/EXH - Dur @ .050” Lift: 220°/228° RR: 1.8/1.8 Gross Lift: .486”/.495” LSA: 114° RPM: Idle to 6500 Redline: 7000 Learn More

Ford - 4.6L & 5.4L 4 Valve
Performance level - Stage 3 - Designed specifically for supercharger applications for 3/4 race.
INT/EXH - Dur @ .050” Lift: 212°/212° RR: 1.8/1.8 Gross Lift: .484”/.484” LSA: 114° RPM: Idle to 6200 Redline: 6700 Learn More

Honda / Acura - H22
Performance level - Stage 2 - Forced Induction Special - Excellent for turbo or supercharged applications. Features short duration and high lift. Requires spring #68184-16.

MID: INT/EXH - Dur @ .050” Lift: 233°235/° RR: 1.55/1.55 Gross Lift: .463 ”/.448” 

SEC: INT/EXH - Dur @ .050” Lift: 183°191/° RR: 1.55/1.55 Gross Lift: .323 ”/.312” 

PRI: INT/EXH - Dur @ .050” Lift: 175°183/° RR: 1.55/1.55 Gross Lift: .260 ”/.245” 

LSA: 112° RPM: Idle to 8000+

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Mitsubishi / DSM - 4G63
Performance level - Stage 2 - Most popular profile for street/strip. Excellent all purpose turbo.
INT/EXH - Dur @ .050” Lift: 195°/° RR: 1.7/ Gross Lift: .393”/” LSA: 106° RPM: 1000 to 8000 Redline: 8500 Learn More

Hi-Seat Offset Oversize Bearing Mechanical Roller Lifters (.903" dia. / .812" Bearing) V8 Chevrolet SB 265-400ci .180 Left Intake Offset with Integrated Rev Kit Button with High Pressure Pin Oiling (Pair) Learn More

Limited quantity availablity on this Over-run of special undersized rollers.  (These are same as our regular rollers except they are undersized .902" OD)  

 

Severe-Duty Cutaway Mechanical Roller Lifters (.903"-.001" dia. / .812" Bearing) V8 Chevrolet SB 1955-Up 262-400ci will fit Tall Lifter Bore with High Pressure Pin Oiling (Set of 16)

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Limited quantity availablity on this Over-run of special undersized rollers.  (These are same as our regular rollers except they are undersized .902" OD)  

Severe-Duty Cutaway Mechanical Roller Lifters (.903"-.001" dia. / .812" Bearing) V8 Chevrolet Big Block will fit Tall Lifter Bore with High Pressure Pin Oiling (Set of 16)

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Premium Hydraulic Roller Lifter Late Model Ford (Drop-in High Performance Slow Leak Down) (1 each) Learn More

Valve Springs Single (Set of 12)  This spring is the replacement for discontinued #68147-12

Outer Spring O.D.	1.355"
Coil Bind Height	1.125"
Damper Spring	none
Outer Spring I.D.	1"
Rate	380

 

 

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Valve Spring Single (One Piece) Limited to stock on hand.  This spring is replaced by 68145-1 for singles or for a set of 12  68145-12

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