Top End Miss

ok as most of you know i have had a couple of other threads on this issue...

i figured since we have moved on from the original thoughts i would post a new thread...

ok so here is what i did and what happened...

i installed 4.88 gears, from 3.91's, becasue my trap rpm was only 5 grand and i wanted it up around 6K... so in went the gears and out to the track, had a very bad miss from 5400 and up...

came home and installed a new fuel pump (street carter to holley red)(already had new 3/8" steel line and p/u) and also drilled out the fuel rail... this bumped it up to 5600...

then we thought ignition might be to blame so i installed an MSD box, blue streak cap, and rotor... no change...

so on a hunch we checked valve springs, they were 75seat, 250 open... so i installed new springs @ 300 open, 120 seat... moved the miss up to 5800... which is where we are now...

as asked i checked the cap and the "burn mark" is constant across the entire brass contact, on all contacts...

i have a friend who is going to let me use a wide band setup with data logger to see if anything come up there... also gonna back timing off and see if that helps...

here are the other threads
http://www.forabodiesonly.com/mopar/showthread.php?t=171722

http://www.forabodiesonly.com/mopar/showthread.php?t=177219&highlight=valve+spring+woes

http://www.forabodiesonly.com/mopar/showthread.php?t=168274&highlight=shooting+ducks