Kb399 questions

AJ/FormS said

.010 is probably pretty close assuming .012 down in a 9.600 block.
I didn't realize you had already bought parts and began machining.

A Q of .0675 is smack in the middle of what I keep hearing, is the detonation zone, from .050 to .080.

My catalog says .150 over .050 so total .200 would be correct.

Click to expand...

.0675 would be about right IF there was a .050" quench pad..... but the current KB info shows no quench pad in the descriptive info (where they always mention it like for KB232's for a 360) nor does it show in the pix for the KB399. The piston-top catalog code for a KB piston for a quench pad piston is 'QH'.... the KB399 is listed as 'FT' (flat-top).

Is this perhaps in an OLD catalog? Or is this begin confused with the KB232's or 373's (which DO have quench pads)?