i just read the article on advancing the timing and was wondering what adverse affects i could look for if i did this(i.e. rough idle or somthing like that), also wondering how much this could help 1/4 mile wise.
too much spark advance results in higher cylinder pressures which in turn results in higher temperatures and more work for your bearings and rings to overcome...so higher temps & cylinder pressure are things that increase the risk of detonation. Secondly you wear out your engine faster.
the tradeoff is 2-3 more whp for the chance to blow up or wear out things faster...you decide if it's worth pushing past the stock max. of 18 degrees BTDC.