Cam Timing
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Freshman User
Joined: Mar 2011
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Cam Timing
I have recently purchased a Comp Cam 249-CL34-227-4 from Jegs, and am currently installing a Cloyes C3079X timing set. This timing set has a 3-keyway crank allowing it to advance or retard crankshaft timing. My question is with this cam, where should I set my timing set? If I understand it correctly, the pre-1974 460-429 had advanced cam timing and 1974 and on had it retarded for early smog control. This truck does not need to pass any emissions tests, and I am looking to get the most low end torque I can out of it. Any advice would be appreciated.
-Devin
-Devin
Senior User
Joined: Jan 2007
Posts: 191
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Install the cam straight up. Most street cams are ground with some advance built into them. Usually about 5 degrees. If you advance the cam, you increase low end torque BUT this increases cylinder pressure and can cause detonation on pump gas. Leave that to the racing boys.
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