5500RPM Predator Build.

Racing03

Member
Need some help on what to do. Rule is must look stock out of box. Claim rule $140

As of now I have these parts
CL1 cam
10.8 green spring
#4 keyway
Cut off head .035 18.5cc
Head has 3 angle valve job
blueprinted crab with jets
low #21 high #31
short block is stock
 
Last edited:
0.350" off head?
Have you checked the compression ratio?
Jetting needs change as the air density changes, are you checking the air density?
What fuel? What octane?
 
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