just wanted to make an update... i finally got the bolt off.
Thanks for all the tips.

In the process I:

broke a 1/2 to 3/8 socket reducer
snapped a 24 inch 3/8 drive entension
I stripped the bolt ! (I gave up for a while because of this)
I somehow managed to hammer on a 17mm 1/2" drive socket onto the bolt

sprayed the bolt several times with pb blaster for a couple days
jammed the flywheel with a hex bit
2 10 inch 1/2 drive extensions
18" breaker bar
used a jackstand to support the entensions
put on a 4 ft pipe from home depot
put my foot on the bar and snap! it finally broke loose