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Old 12-27-2004, 09:34 AM
DTL504 DTL504 is offline
84 Z28 Convertible
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Re: Carb

Tech@ BG
Which model of 750 are you talking about, "Mighty Demon"? My current initial timing is about 20* with the Holley 3310VS, I will get the 4 hole spacer to go with the Speed Demon, so I should be ok right!

Also I have read and look at the video and their is some conflicting information that I hope you can clear up. My engine idles at about 900-950:

The video and the owners manual state to have about .020 open on equal both the primary and secondary butterflies.

The addendum states that their should be .020 on the primary and the secondary transfer slot should not be visible when viewed from the bottom.

1.Which of these methods is correct/updated information for the Speed Demon?

2. What type of 4 whole spacer does the Demon respond well to
Phenolic, aluminum, or wood?
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