do you need to machine the block to use these,
as in re-tapped??

and what power are normal head bolts ok to?

 

anyone

 

arp stud and nut kits dont need any machining of the block.

quite a few people run decent power levels with standard head bolts including karl norris. hope that helps.

 

thankyou mate!
a guy i was speaking to on the phone was telling me anything over 320 ish should be stud and nut kit time!
a good investment all the same im sure?
Karl norris is up round 700 isnt he!? or did you mean his customers!

also, did i read right, that some people have trouble with
blocks cracking when using stud and nut kits????


thanks again

 

karl uses standard bolts on his own car.

stud and nut kits wont crack blocks if they are fitted correctly. a mate of mine has used them on his car for at least the last 3 years with no probs whatsoever.