new here i have 2002 silverado lm7 5.3 swapped into 2003 s10 blazer. i swapped the cam today. started itand recorded a log. my spark advance is up down and rpms also and im getting random misfiring light flashing. im needing some help idle tuning and where to start. ive played around a little with stock tune.
i have checked and double checked plug wires plugs and coils. they are in good order. any help would be appreciated. i have pasted cam specs in post and attached my long and current tune after swap
Part Number:
54-454-11
Grind Number:
277LRR HR13
Lifter Type:
Hydraulic Roller
Engine Family:
GM LS Gen III/IV 8 Cyl. '97-Current Three-Bolt 4.8/5.3/5.7/6.0/6.2/7.0L Engines
Description:
HYDRAULIC ROLLER-Good street/strip camshaft with a very wide range.
Cam Family:
LSR? Rectangularl Port (All Out Power for 5.7L-6.2L)
Specifications Intake Exhaust
RPM Range:
1900-7000
Valve Lash:
Hyd.
Hyd.
Valve Timing:
0.006
Duration:
277
293
Lobe Separation:
113?
Duration @ .050" Lift:
227
243
Intake Centerline:
109?
Valve Lift:
0.614
0.624
Lobe Lift:
0.361
0.367
Valve Timing @ 0.006 Lift:
Exhaust
Closes 30
ATDC
Opens 82
BBDC 109 Valve Timing Diagram
Intake
28 Opens
BTDC
68 Closes
ABDC