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Tech Talk Toyota

4AGE Camshaft Dyno Testing

February 13th, 2023

Toyota 4AGE 16V

Shimless or Shim Under Bucket Camshafts

View all 4AGE 16V Camshafts

4AGE 16V Racing Cams – Dyno Testing: Garage 4AGE have completed independant Dyno testing for our 4AGE 16V shimless or shim under bucket big cams.

Camshaft Specs:
193HV-B
300°/294° | 10.50mm/10.25mm Valve Lift
High lift NA racing cams to suit professionally built competition engines. Will pull to around 9.5k rpm depending on engine. ‘HV’ high velocity cam profile, more cam sweep area than the stock shim will allow.

193HV-C
318°/304° | 11.00mm/10.10mm Valve Lift
High lift NA single seater racing or drag cams to suit professionally built competition engines. Will pull to around 10.5k rpm depending on engine. More top end power than the 193HV-B. ‘HV’ high velocity cam profile, more cam sweep area than the stock shim will allow.

4AGE Valve Train Parts Available

Toyota Cams Gears

The gears have been CNC machined from highest quality 6061 T6 aluminium to more precise tolerances than original OEM gears.

View Pricing
Valve Guides: Intake & Exhaust

Set of 8. Specs OD: 11.04mm. ID: 5.97mm.
High quality precision machined. Made from our own proprietary Manganese Bronze.

View Pricing
Premium Beehive Spring kit.

80lbs at 33.85mm installed height. 168lbs at 10.0mm valve lift. Coil bind at 20.9mm.
Beehive Springs with Titanium Retainers

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Featured build profile

Toyota Starlet

Richard Opie

Check out more photo. A perfect Toyota Starlet restoration. High end engine build with immaculate interior trim.
@snoozinrichy

With the help of a few good folks we screwed together a mild 16v 4AG, based on a rebuilt long block I bought which already had TRD forged 12.5:1 pistons in it. The bluetop bottom end was retained – probably not the ideal solution, but after an initial dyno tune with the stock head, the engine got a ported head, with a set of Kelford Cams 193-B and Supertech valvetrain. The usual 20V Silvertop throttles hang off the drivers side with a set of Niteparts headers sweeping up off the passenger side into a 2.5″ exhaust. It managed 150hp at the hubs on a Mainline dyno, not a scratch on @garage4age’s weapon (if youre not following him you really need to) but it’s a handy little thing in the twisties.

toyota starlet nz performance magazine

View the full build

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