I have a sbc 355 i just did a head and intake swap on. Dart iron eagle heads, New comp magnun roller tip rockers, new valve springs, new pushrods, valve seals, etc,and a new eddy performer rpm intake. Got it all bolted up, wired up, lines and hoses ran, initial timing set to 10* BTDC and she fired right up. Ran fine, timing needed a little adjustment, but ran fine. I used lucas oil break in additive and did the normal 20 mins at 2500 rpm just to be safe.
Decided I would take it around town to see how she ran, and as soon as i turned onto the main road I knew something was wrong. She ran like *******. Popping, backfiring, low end bog, etc. Parked it and tried to adjust the carb. The next morning I went to start it up, and it would not start, just a big backfire and the carb caught fire. So i tried to advance the timing by turning the dizzy and when I tried to crank it over it made this terrible grinding kind of noise. Not the kind of grind a starter makes when it doesn't engage properly, and the engine was turning, but would not fire. SO i removed the dizzy, bumped the engine over to TDC on num 1 cylinder, backed it up to 16* BTDC, and dropped the dizzy back in with the rotor facing num1 cylinder. Went to crank it over, made the exact same noise, still wont start. Any ideas on what it could be? What should I try next? Next day off i planned to drop the starter and inspect it adn the flexplate, if theyre fine gona drain the oil and look for metal. HELP please
Decided I would take it around town to see how she ran, and as soon as i turned onto the main road I knew something was wrong. She ran like *******. Popping, backfiring, low end bog, etc. Parked it and tried to adjust the carb. The next morning I went to start it up, and it would not start, just a big backfire and the carb caught fire. So i tried to advance the timing by turning the dizzy and when I tried to crank it over it made this terrible grinding kind of noise. Not the kind of grind a starter makes when it doesn't engage properly, and the engine was turning, but would not fire. SO i removed the dizzy, bumped the engine over to TDC on num 1 cylinder, backed it up to 16* BTDC, and dropped the dizzy back in with the rotor facing num1 cylinder. Went to crank it over, made the exact same noise, still wont start. Any ideas on what it could be? What should I try next? Next day off i planned to drop the starter and inspect it adn the flexplate, if theyre fine gona drain the oil and look for metal. HELP please