crank identification help

[69projectKAOS]

Look at your harmonic balancer if its a 400 balancer there will be a weight taken out of the outer ring as its externally balanced . Here is a pic of 400 balancer.
Tim

hey tim, i went out and looked at my harmonic balancer and it does not look like that at all. it completely round with no indentations on it.

i was also able to get my old th350 trans out in record time lol (1 1/2 hrs) in 45 degree weather non the less. and this is what the back of my crank looks like, and it has no numbers or anything on it unfortunately. my old flexplate that was on the motor has no counter weights on it either, which is making me think it is a stock 350 crank because a 400 crank would have to have a counter weight on it. the old flexplate was 168 tooth. i still need to know if this thing is internally balanced or not, this is the only thing holding me up from getting my t56 in !!!!!