[Ian Hill]

i don't mean to be the bad guy here, but there are tolerances on almost all of the size limits for every engine allowed to run. And many people spend excessive amounts of money to have their engines built to just within those limits. I am by far not a "regular" NHRA/ IHRA racer but my cars are built to the limits. If it says +/- .015" you can bet mine will to .0145" of which ever way benifits horsepower. When my heads are redone and the CC's are recorded at the head shop, i still have my builder check them prior to installation.

When a cam shaft is measured to be too big, it is not only too big over stock, it is too big over the allowable tolerance, if they allow an extra couple of thou over the tolerance, then it it really isnt a tolerance is it?

I feel sorry for anyone that gets caught with out of tolerance parts in car components that we had nothing to do with putting them together, but in the end it was an out of tolerance part; simple. the car owner is doing the right thing - he feels aweful as any of us would, and he is not only striving to make it right he is telling everyone of his plans which is great! But enough of you guys whining about allowable limits over tolerance already please.

Ian