Were you running the Black Box PCM or 0411 Silver PCM?
Reason I ask is I ran a Comp cam
258/264 @ .006,
203/210 @ .050,
.458/.458
(.489/.489 w/ 1.6s),
110* LSA, 106* ICL
On a Hypertech 93 octane tune in an 0411 for weeks without any driveability issues. I put the same tune in my buddies 1997 C1500 with the 0411 swap. He is running an Elgin cam.
210/215 @ .050,
.462/.470" lift,
110 * LSA, 106* ICL.
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