Lets talk compression

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Sep 30, 2006 | 10:13 AM

#21

Taijutsu

Drifting

Joined: Apr 2002

Posts: 1,736

Likes: 37

From: Stockton Ca

My advice would be drive the car untill you know what you want. More cam than you need will just blow off low end.
Why not get some good heads and 1.6 RRs for now. You will get more power, cooler running. When you know more about your driving habits, you can buy a cam to match. JMHO

Rick

Sep 30, 2006 | 10:31 AM

#22

Chilli

Instructor

Joined: Apr 2006

Posts: 174

Likes: 0

From: Wallaceburg Ontario

Quote:

Originally Posted by Scott Marzahl

The L-82 will work best with at least 9.75:1, preferably with 10:1. The L-82 has 224 degrees of duration, around .450" of lift.

Damn, I didn't think a cam that mild would need anywhere near 9.75:1 compression. Looks like I've got some homework to do.

- Chilli

Sep 30, 2006 | 10:52 AM

#23

Scott Marzahl

Le Mans Master

Joined: Apr 2005

Posts: 6,339

Likes: 416

From: Seattle Area WA

The reason these GM performance cams need a higher SCR to perform decent is because they all have relatively late closing inlet valves which result in a lower DCR.

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