Quote:
Originally Posted by Rich Biebel
I don't run Stock any longer for my own reasons and I won't bore you all with why that is so. I have poured a number of intake runners in my engine shop days. Mostly big and small block Chevys that were untouched.The heads used to establish the accepted numbers were modified in my opinion. That is old news......
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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 bigger than SS make em smaller by welding or epoxy... for stock, if there bigger than what you need and you cant find any cores that small cause there aren't any... DON'T RACE THAT COMBO..