Camshafts, Tappets and Timing Sets

TR6 Chilled Iron Camshaft

Good Parts now offers new chilled iron camshafts as well as reground stock cams. The new cams offfer greater durability due to improved material and larger diameter.

Good Parts camshafts are precisely ground to an exclusive profile designed for the Triumph engine.

The "GP2" high performance street profile offers very good idle, fantastic torque in low and mid range and good top end power up to about 5500rpm. Its lower torque range makes it the best choice for street, and autocross. It will also do an excellent job in a drag race with plenty of torque the whole way through the quarter mile.

The "GP3" is also a good street profile but has its torque range at a slightly higher rpm. It will idle with a nice lope at 1000 to 1200 rpm, has an excellent mid range and a high horsepower top end while still maintaining good torque at low rpm. The driver who likes to rev a bit higher and wants the ultimate edge in a horsepower will prefer the "GP3" profile. This cam also has a wide torque range that will get you through the gears with no waiting time.

Good Parts high performance valve springs are recommended with GP2 & GP3 camshafts.

CAM

POWER BAND

CAM LIFT

VALVE LIFT*

DURATION @
.010 CAM LIFT

DURATION @ .050 CAM LIFT

VALVE CLEARANCE

GP2

2000–5500

.258”

.362/.360

278

227

.015/.017

GP3

2500-6000

.282”

.395/.393

281

232

.017/.019

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