Timing a 85 Chevy pu

Tiny
COLEMAN 2010
  • MEMBER
  • 1985 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
Ive put a.455 lift holley cam in a 350 chevy, have been setting timing by vacuum gauge, ie highest reading then back off 1 in. Doing this believing distributor got installed wrong. Readingis 15 in. Have no pinging on accl. Am I doing harm. Plugs do look a little hot. Motor is a 1990 gm crate 4bolt main
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Monday, November 22nd, 2010 AT 3:55 PM

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Tiny
MMPRINCE4000
  • EXPERT
Is this electronic ignition with ECM?
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Monday, November 22nd, 2010 AT 4:03 PM

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