Re: '69 C10 327 SBC Off Idle Stumble / Misfire Help - I feel like I've tried EVERYTHI
Timing can do that.
Too much fuel pressure can do that.
A valve hung open can do that.
Lots of possibilities.
You gotta start over.
Rerun your valves.
Optimize your timing.
Verify your fuel pressure at all rpm’s.
Adjust your carb.
See what it does then.
If your timing light is wacky like you mentioned just replace #1 wire with a normal stock type wire.
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