[JLerum]

Here are some numbers for you on a cam that's representative or an LS-6 cam for a 454. This formula involves % cylinder volume vs crankshaft angles. If I can get a 3.76 stroke % cylinder volume vs crankshaft angle chart chart, I'll mke some numbers for the 427 and 396 motors. This is the compression mapping for the 454.

Intake valve closer/ Compression
IVC 68 degrees = 11.54cr
IVC 69 degrees = 11.64cr
IVC 70 degrees = 11.74cr
IVC 71 degrees = 11.86cr
IVC 72 degrees = 11.96cr
IVC 73 degrees = 12.06cr

I bet the LS-6 cam is around the IVC 70. Again, until I can get my LS-6 cam on the cam doctor I can't give you the exact intake valve closer. More info to come!!!!

Jim

[Edited by JLerum (09-24-2001 at 01:34 PM).]