In a message dated 4/12/04 3:20:34 PM Pacific Daylight Time, mhanna@ball.com 
writes:
> . The timing is
> fine and there are no vacuum leaks. Where should I start ? 
Mark:
The timing may be fine per the book specs, but try advancing the timing just 
a bit more.   If it is backfiring through the carb, I would suspect the timing 
may be off just a bit.  I am running a DGV on my '79 and have to keep the 
timing advanced just a bit more than spec.  Also, one of the hallmarks of the 
DGV 
is a slight stumble at take-off.  Double-pedaling the accelerator helps.  
--
David C.
 
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