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Old 10-29-2018, 11:28 AM   #18
SRT8-X
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Join Date: Feb 2017
Location: Cypress, Texas
Posts: 42
Re: '69 C10 327 SBC Off Idle Stumble / Misfire Help - I feel like I've tried EVERYTHI

Quote:
Originally Posted by geezer#99 View Post
Your timing numbers don’t add up.
24 in the mechanical with a total of 36 gives you 12 initial not 16.
Is the esp intake an air gap type?
What cam?

Try a dry fuel pressure gauge. Oil filled ones don’t like heat.
Thanks for the reply. I did not account for the calibration in the distributor in setting the timing. I found TDC, verified, set initial to 16° at idle (950 - 1000 RPM) at the zero mark on the timing tab, then set total timing to 36° at 3200 RPM. I will be calling Performance Distributors to verify this but their instructions for setting timing comply with the method I used, not referencing the calibration specs.

The intake is the traditional non-air gap type, it's rated from idle to 5500 RPM.

I do not have the cam specs but it's pretty basic, nothing radical, no significant lope, idle is smooth.
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1969 C10 Stepside (PERCY - tribute to CDE)
1996 Chevrolet Tahoe 2-door / 2WD LS5.3/4A (ROBYN)
1998 GMC SLE Regular Cab Short Bed Fleetside 4.3/4A (LUCY) (driver)
2000 JEEP Cherokee Sport XJ 4x4 4.0/4A (RUBY, son #2)
2013 VW GTI Driver's Edition 1.8T/6A (GRAU GEIST, son #1)
2016 BMW X5 xDrive50i MSport 4.4L N63/8A (SCHNEEWITTCHEN)
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