Good luck. I still haven't gotten mine off.. Tried a 650 FT LB impact wrench w/ no luck. Tried the starter w/ no luck. Even tried resting a breaker bar on the frame and pushing the car down a hill. Either locked up the tires (255's) or the car would buck and end up resting on the breaker bar (still on the incline).
Need to take it to a truck shop (3/4 or 1" IMPACT) or get a torque multiplier..
I tried everything on mine, 1000ft/lb impact, starter method, broke 2 craftsman 1/2 drive sockets and snapped the adapter piece off the 1/2 breaker and in the end we got it off with heating up the bolt with a MAP gas torch and using a 3/4 breaker and drive socket. I used the MAP gas with the 1/2 aswell though but the 3/4 stuff broke it lose. Use a pipe along with the breaker so you get more pull with it.
I took my supra to a mechanic the first time I did it. He had it on a lift and used a breaker bar on it from the bottom with all the intercooler piping taken off. Got himself a big hammer and took a couple of swings at it, which was enough to break it free. I guess the sudden impacts help jar them free.
The time that i did it personally I used the starter method to get it off. Same as above. To tighten it on my auto I had to get "creative" heheh. Jammed a screw driver in the cam gears against a screw. We broke the screw head and the screw driver. hahah I think we got it tightened by wedging a screwdriver between the cam gears. FYI if you have to go that far, might as well replace the waterpump since you have to pull the crank pulley off to get to it anyway.
Every time people ask about how to remove the crank bolt, I crack up on how people get creative in getting that big bolt loosened.
The 'proper' way, per the FSM, is to use the SST that bolts up to the front of the balancer. The SST basically keeps the crank from turning.
I use the SST along with a 3/4" drive break bar, with a 3' long section of black pipe for leverage.
Using the SST is also the only way to accurately torque the crank bolt back up to 239 ft.lbs.
As far as the break bar/starter method, I've heard of starters breaking themselves free of the block and stripping out the threads in the trans. The whole" torching the thing off" method is SCARY as well... probably end up melting the #1 main bearing...