I am putting in a lakewood bellhousing w/ tremtec 5 speed. I have the instructions from both on how to measure the runout on the bellhousing however they seem to contradict eachother...

Lakewood states you half the indicator reading

For the tremtec you take readings @ 12, 3, 6, & 9 o'clock

For instance:
12:00 = 0.000
3:00 = 0.076
6:00 = 0.068
9:00 = 0.006

Tremtec total runout = 0.002" but according to Lakewood = 0.001"

Can anyone shed any light on this? I need to be = / under 0.005"

I guess i need the dummies version.......