have a 400 with 11 heads and 230/240-112 lca (ported/polished heads) and I've spent a heck of a lot of time towards trying to get better traction. will go sideways through third. haven't raced it yet but my 400 has similar setup and even before the 4.56's. ripped it up with the 2.56 or whatever it had. I disconnected the vaccum advance, ran 16* initial with total 34* (I use 50/50 w/race fuel)
ran aggresive with a th350 with cheapo jegs 22-2400 converter and with 200r4 w/ 2600 stall.
the cam being a tooth off sounds worth checking, but how good did you break in the cam? Is it possible you could have worn the lobes of the cam on break in? I usually do around 25 minutes around 2500 rpm. (to try to prevent overheating, I use clean water and keep the cap off with a running hose)
just my two cents
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hmmmm.... which car do I work on today? -answer: all of them, they all need something
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