This is just copied from a thread I made about increasing the sustain of a guitar. Literally almost every post but re-worded into one tutorial for personal reference and maybe for the maybe 1 guy who happens to read this. Sorry if parts make no sense or are written oddly.
With a vintage (strat) tremolo you can lock down
the bridge and stick some wood between the tremolo block and body, as well as putting some hardwood in any empty space in your guitar. If you do
put some hardwood in it either use maogany or whatever wood is in your
guitar. you should also glue it with a mix of sawdust and heavy duty
construction glue if it's purpose is permanent.
You have to add a whole lot of weight to get the extra
sustain - More mass = more sustain. The
Fat Finger is supposed to help sustain by increasing the mass of your
The extra weight to the headstock may only need you to adjust your
truss rod, and may make the guitar neck-heavy, causing the neck to dive
to the floor when you aren't holding it.
Cranking up the OD/Distortion and turning down the master on the amp. - Upgrading to higher output
pickups - Decent fretwork (properly seated frets) - Better bridge and bridge saddles - High quality nut, like a GraphTech or a bone
nut - Proper picking technique - A full setup, do it yourself, or pay the $50-60 dollars to get your guitar setup. Also, pay the extra 5
bucks for better strings.
Some tube amps can give a bit more sustain when
cranked. Like Joe Satriani's amp. I read that a lot of his sustain
comes from controlled amp feedback. A compressor pedal will work wonders too.
I don't think that placing or gluing extra wood in the back of your guitar is gonna do much. It is in part affected by the structural integrity of your guitar wood. The denser woods tend to be harder and transfer more energy.
I'm not too sure of it either, but the way I see it the bridge has more connecting it to the body than 2 posts by adding blocks. That plus it's mainly just for blocking the trem than sustain but I thought I'd add it to the list because it seems logical in a weird way. Someone needs to test some of these.