I have a BnB 350, sportsman 2 heads, Comp .50 cam, tunnel ram w matching twin -450 Holley carbs, headers w 2.5 inch exhaust to turbo mufflers, beefed up 350 tranny with 3500 stall, new driveshaft, posi rear end (orig). Trouble is in dialing it in so it transitions well. All carbs, manifolds, heads, shortblock, dist are new. Seems like the idle circuit on the carbs is fine, revs in park ok, pulls 10in vac at 850-900 revs. As I drive in first, I accelerate slowly to 1400 or so and then it starts "2-cycles" "stumbles", like the choke is stuck.. lol ( no choke, manual secondarys). About the same time, is when the vac drops, so I adjusted powervalves, etc. Checked float bowl positions, Timing set to 35-40 total. The engine has never been really dailed in right, or dyno'd, But it has run better. It did have an electrical short, alt wire melted part of wiring harness, etc. and I am tring to get it back to some form of running. Thats why I thought maybe coil shot. Thought maybe I flattened a cam or something... <scheese>, but they adjust well, vaccuum is steady at idle, got hyds, 1/4 turn from zero.
Anything I can try and /or check would be greatly appreciated.
Thanks, Scott