I was trying to find the master lobe specs for the LSR lobes, if you have a link to them please post it up. Thanks

 

More aggressive than XER lobes? Are these the lobes the new thumper cams use?

 

Yep more agressive, and more lift!!! Comp recommends dual springs

i am not sure what the thumper cams use

Attached is the DCR spreadsheet i use and the master lobe specs I found on Tech.

The cam i am looking at for my new Forged 5.7 is:

227/227 .614/.614 @ 112+4
+3* of overlap
With my new motor -5cc pistons, stock LS1 bore and 58cc combustion chambers yeilds
CR of 10.85 and DCR of 8.51

 

Sounds like a great daily driver cam! Haha

Hopefully you won't have to be swapping out new springs every year

 

That is what i am thinking, with the PRC 2.5 heads, i don't think i need alot of duration to make power.

 

Maybe this will help you some........

http://www.hardcorels1.com/vbulletin...read.php?t=821