Stevet1316

Ok here is the jest of my question...
Building a LS1 for my S10 ...
Have the new LS1 Comp Cam - ***** Thumper HR cam
with the following specs (anybody else running this cam???):
Intake - .564
exhaust - .547

Duration at .006 is:
Intake - 283
exhaust - 303

Lobe Separation is 109

New out of the box Dart Pro 1 heads
2.05 intake
1.6 exhaust
running .053 thick gaskets

Pistons already have intake and exhaust valve reliefs in them...

Fly Cut more or ok with this set up (the lobe sep is what worries me)?

I know guys running + .600 lift cams in LS1 and 2 motors and never fly cut their pistons soooo............

Thanks for any input...

2000PewterT/A

You should be fine without fly cutting. I still would check but you should be fine.