Stage 1 Questons Converting from 8 headbolts to 14 head Bolt

[Jeff Strube]

How do you go about Drilling and Tapping the Extra 6 bolts in each Side of the Block do we Just order the ARP Stage 2 Head Stud Kit? Should we use
the Head for Guide How deep do we Drill?

 

[BadAssGN]

Best best is a machine shop.....

as for location of the extra holes, there should be a diagram somewhere.

I think the Power source book showed all the info.

 

[no-nos]

does the engine block have enough meat on it ? if so you can have a sort of mold welded on to the block ( see pic ) which gave me a chance to put at least 70ft lbs of torque on the 3 top holes. but my block was an experimental version. notice how much thicker the cylinder walls are than a stock 109. with rjc's head clamp holding the bottom.