To start, I have a 67 C10 short bed. The engine is a 67-327, dual plane intake, new 600cfm carb, HEI, mild cam. Tranny is a 350, rear end has 307 gears and is open. The engine runs great, starts great, idles, seems fine. But with the above set up, from a stop I can't even chirp the tires. Also to go with this is the odd engine timing, At 12-18 degrees the thing won't even run, so I advanced it until it runs good. Where everything is happy is at 45 DEGREES advance!!! I checked it with two different timing lights. So the question is, any ideas??? I didn't rebuild the engine, it was in it when I bought it. I was thinking maybe the timing chain sprockets are off a tooth or so??? HELP!!!!!!!