[1970_240z]

the nut on the front of the harmonic balancer. so that i can turn the motor over by hand? i know my 24mm is too small. thanks, marcus

 

[SleeperZ]

27 mm n/m

z on

 

[NathanZ]

I think I used a 1+1/16 inch standard socket on mine. Fits snug, no slip even at 100 foot pound.
Nathan

 

[RENN81ZXT]

27mm