okay, im near the end of my wits here. i have a bb 462 with holley 750, msd pro billet dist(no msd box), off the shelf cam(comp 468 i believe), holley dual plane manifold, and pete jackson gear drive. everything else is pretty standard.

complete rebuild, go to start it for the first time yesterday and have nothing but probs.

first off it backfires though the carbs violently(fireball etc). no big deal, i must have a sticking valve or radically advanced timing right? take all the plugs out, valve covers off and go through it. leakdown test(to make sure i didnt bend a valve), leakdown test is great, compression test is next. it comes out flawless, even good compression in every cylinder. okay on to timing. match up the damper notch with O on tab. check dist and rotor alignment. everythings is perfect. i even go the extra mile and seperate the wires as best i can. here we go, turn the key and.. boom, huge fireball, smoke the whole nine yards, it destroys my edelbrock proflow filter. i resign to the house.

today get a new air cleaner with paper element(to resist catching on fire) go through the whole tdc and dist to rotor thing. i go ahead and loosen all the rocker nuts just in case i have a lifter pumping up or something. same results. it must be some seriously f"d up timing so i crank the dist clockwise about an inch to "seriously" retard the timing. okay now it wont start at all and kicks the starter back. we'll try going the other way, crank it counter about an inch past my "0 degree" scribe marks and it starts right up but unless i keep my foot in it (3000 rpm or more) it wont stay running.

now for the reason i mentioned having a gear drive, ive never had one before so i dont know what to expect. but while i keep pedaling it to keep it running something is making the most horrendous whistling noise ive ever heard. its a constant high pitch whistle that is about three octaves higher than human ears were ever supposed to be subjucted to.

i continued to advance the dist another half inch or so with no real change, no favorable change anyway. but for gosh sakes dont start retarding it(clockwise) or it blows up through the carb and motor dies.

so to summarize, it seems ridiculously advanced but starts right up but immediately dies, it you make it stay running, its pretty rough and whistles something crazy.

please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!