v8 block thread cleaning

[Stowe, Ted-SEA]

howdy.

what do you guys use to clean up the block head bolt holes ?
it would be criminal to torque my shiny heads to all that crud down there,
which I think exits to the water jacket and or the oil pan ? especially with
the arp thread sealer/lube on them.

I see that snap on has a thread chaser tool set, rtd-42, however I can't
seem to find a local snap on guy to buy it from.

compressed air would blow that junk down into my engine beyond any doubt.

so if you were doing a valve job, what do you use ?

thanks, Ted Stowe