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Username Post: Vacuum Advance- how is it supposed to work?
Posts: 595
Loc: Los Angeles area
Reg: 11-12-09
01-11-15 09:20 PM - Post#2513985    
    In response to 65_Impala

  • 65_Impala Said:
  • octanejunkie Said:
FWIW, I run 25° timing at idle

I've got 28* at idle programmed into my LT1. That timing gives about the lowest injector pulse width. It could idle forever on the hottest day without overheating only using a 16" electric fan strapped to the radiator. And that fan doesn't even have to cycle on that much.

Nice. I know I will have to re-tune it when the warmer weather comes to So Cal. 100°+ ambient temps make hot rods so much fun to manage.
'59 Chevy 3100 Stepside
0.030-over 350, mild (214/224 @ .050) 112 LC cam,
vortec heads, air-gap, 600cfm carter, Holley Avenger EFI, 2-1/2" rams horns,
Bowtie Overdrives 700R4 w 2200rpm stall, 3.42 posi rear on top of 31.5" BFGs

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