I had an issue with my idle on my six pack . It was all over the place. My Mopar performance dist. had 2 light advance springs in so I replaced one with a heavier one and now it returns to whatever I have it set at and that is great.My question is at 1000Rpm's at idle when I put it in gear it drops 300 rpm's . I don't ever remember that it should drop that much.The engine has a 484 lift cam 30 over 915 heads and a Hemi street stall converter.

Thats Moparts