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post #65 of (permalink) Old Sep 18th, 19, 2:52 AM
McHaggis
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Join Date: May 2010
Location: Invercargill, New Zealand
Posts: 212
Re: 11.5 mpg 396?

Quote:
Originally Posted by hjdca View Post
....You need a wideband and a great understanding on how to tune a carb..
Thatís the secret. I drilled and tapped my Speed Demon so I could change the IFRís, all air bleeds, the PVCR and I played with the emulsion circuits. I have about 29* at idle and I run as much vacuum advance as possible. I also found using the HVC ll coil a must as a Blaster SS didnít work nearly as well.
The custom Straub Tech cam also helps a lot.

I found most of the info to do this on this forum.
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