Kelford camshafts, Toyota 3S-GE / 3S-GTE Gen 3/4, not BEAMS (1993-2002)

Kelford camshafts, Toyota 3S-GE / 3S-GTE Gen 3/4, not BEAMS

Kelford is a New Zealand camshaft manufacturer with roots in Christchurch dating back to 1968. Its profiles range from upgrades for street-driven cars to fully built race engines. Choose the cam around the rest of the engine and its intended use, rather than simply picking the longest duration.

This selection is for the Toyota 3S-GE / 3S-GTE Gen 3/4, not BEAMS engine. Profile differences, spring recommendations and required modifications are detailed below.

Technical specifications – available profiles for this engine

Profile 4-195-A

For a modified naturally aspirated engine used in rallying or circuit racing. Adds mid-range and top-end pull, requires free-flowing intake and exhaust, and suits increased compression. Operating range is approximately 8,000–8,500 rpm depending on the engine. Recommended springs: KVS109-3S. The intake cam is machined for the factory Gen 4 trigger. In Gen 3 engines, fit the supplied grub screw to the rear of the intake cam.

Manufacturer profile information

Profile 4-195-B

For a naturally aspirated racing engine with increased compression, a ported head, a suitable manifold or 45 mm individual throttle bodies, and a free-flowing exhaust. More top-end pull than A, extending to approximately 9,000–9,500 rpm depending on the engine. Suitable for rallying or circuit racing with close-ratio gearing. Recommended springs: KVS109-3S. The intake cam suits the Gen 4 trigger, Gen 3 engines require the supplied rear grub screw.

Manufacturer profile information

Profile 4-195-TA

Street turbo profile for around 400 hp with the original turbo or a 48–54 mm upgrade. Adds mid-range pull while retaining driveability. Suitable for E85. Recommended springs: KVS109-3S. The intake cam is machined for the original Gen 4 sensor drive. On a Gen 3 engine, fit the supplied grub screw at the rear of the intake cam.

Manufacturer profile information

Profile 4-195-TB

For a turbocharged 3S-GTE making approximately 450–600 hp with a 54–62 mm turbo. Adds mid-range and top-end pull for roll racing, circuit use and E85. Recommended springs: KVS109-3S. The intake cam suits the Gen 4 trigger, Gen 3 engines require the supplied rear grub screw.

Manufacturer profile information

Profile 4-195-TC

For a 3S-GTE racing engine making approximately 700+ hp with a 58–64 mm or larger turbo. Focuses on top-end pull for drag racing, roll racing and circuit use. Suitable for E85. Recommended springs: KVS109-3S. The intake cam suits the Gen 4 trigger, Gen 3 engines require the supplied rear grub screw.

Manufacturer profile information

Checking heights are shown with the duration figures. Net lift is the net valve movement specified by the manufacturer, while cam lift is listed separately. IVO/IVC denote intake valve opening/closing and EVO/EVC exhaust valve opening/closing. BTDC/ATDC mean before/after top dead centre, and BBDC/ABDC before/after bottom dead centre.

Installation and profile selection

Confirm the exact engine version, valvetrain design and the modifications required by the profile. Check cam timing and valve-to-piston clearance during installation. Springs, lifters and other supporting parts mentioned with a profile are not included unless the profile explicitly states that they come with the kit.

Examples of related vehicle applications

• Toyota Celica ST202 3S-GE Gen 3 (1993–1997)
• Toyota Celica GT-Four ST205 3S-GTE (1994–1999)
• Toyota MR2 SW20 3S-GE Gen 3 (1993–1997)
• Toyota MR2 SW20 Turbo 3S-GTE Gen 3 (1993–1999)
• Toyota Caldina GT-T ST215 3S-GTE Gen 4 (1997–2002)
• Toyota Carina ED ST202 / Corona Exiv ST202 3S-GE Gen 3 (1993–1998)

The list covers versions with the specified engines only. Exact fitment and required modifications depend on the selected profile, cylinder head, lifters and timing system.

Kelford Cams