Stage-5
LC Engineering has the largest selection of Toyota cams anywhere which means that no matter what application you have we can get the right cam for you. The 2RZ/3RZ Stage 5 Camshaft Set is not for the weak! These cams have a huge lift and make huge power! These cams are used in short course off-road racing, drag racing, and circle track. They are designed to be used with a naturally aspirated engine and will require the use of an aftermarket computer system like the Haltech. They will also work in a carbureted application. Due to the larger lift, they will also require a 35mm "shim under" style bucket instead of the stock "shim over" style.
OEM Toyota camshafts (for reference):
Valve Lift Intake: .328
Valve Lift Exhaust: .318
Duration @ 0.050 Intake 198°
Duration @ 0.050 Exhaust 194°
2RZ/3RZ - Pro Series 5 Camshaft Set
(3500-8500 rpm) High RPM Torque & Horsepower
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Intake
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Exhaust
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Valve Lash
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.007" - .009"
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.010" - .013"
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Valve Lift
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.515"
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.495"
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Duration @ .050"
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265°
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251°
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Lobe Center
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100°
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102.5°
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Intake Opens 32.5º BTDC
Intake Closes 52.5º ABDC
Exhaust Opens 48º BBDC
Exhaust Closes 23º ATDC
Check out our valvetrain kit required for your application below:
- Stage 5 Master Valve Train Kit Part #: 1021510
- Haltech Elite 550 2RZ/3RZ Fuel Management System w/ Sub Harness Kit, see Part #: 1020223.
- Haltech Elite 550 2RZ/3RZ Fuel Management System w/ Complete Harness Kit, see Part #: 1020224.
- Haltech Elite 1500 2RZ/3RZ Fuel Management System w/ Sub Harness Kit, see Part #: 1020208.
- Haltech Elite 1500 2RZ/3RZ Fuel Management System w/ Complete Harness Kit, see Part #: 1020209.
Contact our Tech Support Line for further information at 928-575-2174.
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Note: Images are for illustration purposes only. Images may not represent the product listed. Please contact customer service with any questions or concerns: 1-928-505-2501.
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Camshaft Installation:
Please refer to a Toyota service manual for instructions on installing gears on camshafts.
To remove the cam gears from the camshafts. This must be carefully done using a press.
Support the camshafts so as to not damage the cam gear mating surface flange. It may also
benefit to heat the gear prior to removing it.
To install the cam gears onto the new camshafts. Do Not Press the Gears Onto the camshafts.
This will damage the cams. You must heat to expand the gear so that it may be installed with out
pressing. If using an oven set to broil, heat from 45 minutes to 1 hour. You may also use a
propane torch to heat the gear. If the gear does not fall into place apply more heat. Use a pair of
pliers to install the gears while holding the camshaft upright in a vise. Making sure to not clamp
the journals of the camshaft. Once the gear is installed and seated fully allow the cams to air cool
until you can handle with out gloves.
The following figures taken @ .050 lift at valve with .000 valve lash.
Camshaft Break-In Instructions
he first few minutes on a camshaft are the most important wear period. In this period, the cam and followers become
burnished together. When installing the camshaft, thoroughly coat the lobes with the special assembly lube provided. Cam
must be installed per factory service manual procedures. Set valves at proper lash dimensions, and then readjust valves
after break in period is completed.
CHECK valve train for interference.
CHECK valve to piston clearance, you must have .080" min. CHECK valve spring retainer to valve guide and seal for
clearance.
CHECK valve springs for coil binding; you must have .090" min. of free travel before the springs become solid after the
valve in fully open. 98% of all cam failure is excessive valve spring pressure!
Start engine quickly, excessive cranking of engine is not good for the camshaft. Bring rpm to 1500-1800 for 20-30 minutes
(ABSOLUTELY NO IDLING & NO REVVING OVER 2000 RPM) during the break in period.
TO CHECK VALVE TO PISTON CLEARANCE WHEN THE ENGINE IS ASSEMBLED:
To check valve lash correctly you will have to remove the head and put some engine clay on to pof the piston. Re-install
the heads and turn engine over carefully with spark plugs removed by hand. Remove the cylinder head and measure to
clearance from the top of the piston to the valve surface imprinted on the engine clay.
All cam specifications are checked at .050" lift. Standard degree-in procedures should be followed for maximum
performance.
