What does everyone mean by 6-bolt?

i don't know :)

90-92 motors are called 6 bolts, as opposed to 92-99 7 bolt motors.

so my car is a 6 bolt then?

yes

90-92 motors are called 6 bolts, as opposed to 92-99 7 bolt motors.

hold up, you said 92 in both, i have a 92 GS, what would that make mine? did you mean 93-99 = 7 bolt?

99.9% of 92s were 6 bolt. The other .1% are 7 bolts. The actual name comes from the number of bolts that hold the flywheel to the crank. IF the motor is out of the car you can tell by counting those bolts. If the motor is in the car, you can tell by feeling/looking at the oil pan (see the vfaq).

yeah that was my mistake, didn't even catch that. 93-99 :)

Well, you were technically correct. More correct than 90-92 and 93-99 anyway. There are a very few 92 7 bolts out there....

which is better?

6 bolt is better... but i forgot the reson why it is better... i read it somewhere though... something like more airflow and stuffs like that :D

The 6 bolt has bigger rods, and they have different cranks. They have other internal differences, but i dunno em

The main reasons are less prone to CW, and bigger rods mean they can handle more power (over 500 whp stock).

interesting ;)