Cylinder Head Runner Volumes

[Billy Nees]

Originally Posted by Bub Whitaker

I also poured the heads that were on my last stocker...a late model LT-1 with aluminum heads. Lets just say that my experience is that all the heads I poured were not near the posted NHRA numbers, How did they get those numbers in the first place one would have to ask. Especially if the rules say NO port modifications allowed including acid porting or what I might call "selective rusting techniques". Aluminum does not rust so I also have to ask how a head spec can be close to 10 CC's larger than an unmolested head? QUOTE FROM RICH

Exactley... where did they get these #'s... for super stock, no problem make em bigger... if they are smaller than SS make em smaller by welding or epoxy... for stock, if there smaller than what you have and you cant find any cores that small cause there aren't any... DON'T RACE THAT COMBO..

Or give NHRA an unmolested head, let them pour it and fix the number. Or have LT-1 heads become so rare already that NHRA has to accept the big number or allow a "replacement" aftermarket head. Or pick another excuse, lets see, the collectors have bought up all of the cores, racers have modified all of the cores already, NHRA is just picking on all of MY cores, my dog pissed on my cores and that's why they're so big, they got accidently buried in my back yard and salted 10 years ago, I'm way too busy making tons of money so I have to rely on other people and they screwed up or the best one, my lawyer says that it's OK because none of the NHRA tech people can be considered "experts" in a court of law.
BTW, while reading this just remember that it was written by a cynical, old crazy man that is snowed in on a hill in central Pa..