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Thread: Top Dead Center/Ignition Reference Angle

  1. #1

    Default Top Dead Center/Ignition Reference Angle

    I installed a retrofit EFI system on my Big Block Chevy 540. I'll be using a Dominator ECU and an ACDelco small cap distributor to control timing. Before installing the distributor, I rotated the engine to #1 compression with timing pointer line up with 0 on the balancer. Scrolling through the Ignition Parameters, under Ignition Reference Angle, it shows 10.0°. Not sure what it means? Can you enlighten me? Thank you.

  2. #2
    Join Date
    Dec 2009
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    Connecticut
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    Quote Originally Posted by Udongate56 View Post
    Scrolling through the Ignition Parameters, under Ignition Reference Angle, it shows 10.0°. Not sure what it means?
    http://forums.holley.com/showthread....ing-Holley-EFI (Ignition Timing Synchronization)

    EFI Software Help Information/Instructions:
    ‒ On the top Toolbar, click "Help" & "Contents". This opens all Help topics.
    ‒ When navigating the software, click "Help ?", drag it to any parameter and click again.
    ..This automatically opens the definitions for that specific parameter.
    ‒ Tuning information can be read by clicking the F1 key, when you're viewing any screen.
    http://documents.holley.com/techlibrary_199r10544.pdf (Holley EFI Help/Instructions Overview)
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  3. #3

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    Thanks Danny. "SUPER" excellent reading posts & videos.

  4. #4
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    17,689

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    You're welcome.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

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