Re: SBC Timing?
With mild street cam start with 16-18 base + 18 deg mech in dist all in by approx 2800 rpms ,then you can tweak the timing a deg or 2 up/dn to find the sweet spot.
Then you will have approx 36-38 total by 2800rpms which is a good place to start but the 10 deg base timing you started with is way too retarded by at least 6 deg if not 8 deg .
Base timing being that retarded results in significant power loss esp below rpm that mech adv is fully in/poor soggy throttle responce/wasted fuel-poor fuel mileage/hotter running motor/etc.
Run 93 fuel with this ign timing curve and only try lower oct fuel if the 93 doesnt detonate.
1969 CHEVELLE SS396,ORIGINAL #'S MATCH,GOT IN 1978,(In 2001 rblt/bored original 396 .030 to 402)/M20/12BOLT/3:31'S
2006 YAMAHA 1700 ROADSTAR SILVERADO (1 owner ,GOT in 2009,4,700 miles/WK end fun)
1977 KAWASAKI KZ1000 (AM ORIGINAL OWNER ,GOT IN 1977,NOW has 29k miles/WK end fun)
2002 MAXIMA (DAILY DRIVER/1 owner,GOT 3/2013 w-44k miles)