Cam Timing Question
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Road Warrior
Joined: Apr 2008
Posts: 1,266
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From: Indianapolis
Cam Timing Question
I saw on an advertisement from my local dealer, that the SE 255 cam has 4 degrees of advance timing built in to it. Is this the case with cams from other manufactures or would I need to do some type of adaptation?
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Road Master
Joined: Jul 2008
Posts: 1,142
Likes: 7
From: Michigan
I've read a few posts on here about 4degree timing advance sprockets to essentially do the same thing to other cams without the advance, i'm sure someone will chime in eventually and give you the low down.
Extreme HDF Member
Joined: Apr 2006
Posts: 10,449
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From: Roswell, GA
This is a pictorial representation of cam timing events for a specific SE cam taken from the SE Racing Parts catalog:
http://
Most of the bolt-in cams (Woods 6, S&S 510, Andrews 26, etc.) have an intake close of 40* and on stock compression engines are often installed with a 4* advance key to close the intake earlier. HQ-0034's have an intake close of 36*. The earlier intake close raises the CCP, and moves the torque band earlier in the rpm scale.
I don't recall the intake close of the SE 255 cams, but you can find it and many others using the BigBoyz cam comparator on their website. Your dealer is really saying that the 255's have an earlier intake close than many of the other popular bolt-in cams and doesn't need an advance key.
http://
Most of the bolt-in cams (Woods 6, S&S 510, Andrews 26, etc.) have an intake close of 40* and on stock compression engines are often installed with a 4* advance key to close the intake earlier. HQ-0034's have an intake close of 36*. The earlier intake close raises the CCP, and moves the torque band earlier in the rpm scale.
I don't recall the intake close of the SE 255 cams, but you can find it and many others using the BigBoyz cam comparator on their website. Your dealer is really saying that the 255's have an earlier intake close than many of the other popular bolt-in cams and doesn't need an advance key.
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