Cr
Thread Starter
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Cr
With those heads you are probably looking at a CR of 9.75 or 10:1. To make sure you get a good amount of vaccum get a lobe seperation of 112-115. Remember as you have a shorter duration cam and higher valve rates you will get a better idle with faster valve acceleration which might result in a little less cam life.
Thread Starter
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Pay no attention to my mistake of accidentily pushing the Post new topic instead of Reply to topic
