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Thread: Timing Curve
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04-15-2008 #1
Timing Curve
Let me know what you guy's think about the timing curve. I've not tuned the mechanical or vacuum advance yet. I'd like to get some opinions on a starting point for my setup. I started with 35 deg total, but pinged a little. I lowered it to 32 deg and I'm not hearing any ping.
Current Timing Curve:
- 20 deg initial (sounds high, but is due to mech advance only 12 deg)
- 32 deg total @ 3000rpms (12 deg mechanical)
- 45 deg total @ 1000rpms w/ vacuum advance (25 deg vacuum)
- 383 Gen 1 SBC (.060 over) Eagle rotating assembly
- 2 Valve relief flat pistons
- 5.7 rods
- Bowtie Phase 2 heads fully ported and shaved to 58cc
- RPM Performer intake
- 284 Comp Xtreme flat tappet hydruaulic cam
- 750 Speed Demon carb
- MSD 6A Ignition w/external coil HEI setup
- 350 Turbo w/3000 stall
- 4:10 rear gear
Jim