Single Pattern vs. Dual Pattern
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Single Pattern vs. Dual Pattern
I tried searching this on this forum without any luck, so.....
What I'm wondering is what the pro's and cons are behind single and dual pattern cams.
I understand how it works, I just don't understand which cam works best for what circumstances. Several of the manufacturers making cams for FE's have both types, both with decent durations and lifts. I just want to be more educated about the results each produce before I lay down some coin.
What I'm wondering is what the pro's and cons are behind single and dual pattern cams.
I understand how it works, I just don't understand which cam works best for what circumstances. Several of the manufacturers making cams for FE's have both types, both with decent durations and lifts. I just want to be more educated about the results each produce before I lay down some coin.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
You're talking intakes, he' talking cam shafts.
Fleet Mechanic
Joined: Aug 2007
Posts: 1,828
Likes: 253
From: Piney Woods of East Texas
My mistake.
Normally a dual pattern cam will idle smoother over a singe pattern at the larger durations. There are some other differences too. Like larger power band. There are some variable lift hyd lifters that have a bleed rate that do not let the the valves open all the way up at idle. This will also help in getting a smooth idle. But this can be shoot down with a radical cam.
Normally a dual pattern cam will idle smoother over a singe pattern at the larger durations. There are some other differences too. Like larger power band. There are some variable lift hyd lifters that have a bleed rate that do not let the the valves open all the way up at idle. This will also help in getting a smooth idle. But this can be shoot down with a radical cam.
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