340x vs. Edelbrock aluminum heads.

rumblefish360 said

My exper. with the shortblock was poor machine work and you were better off with the 9.5-1 since mine had an ill machined deck where the pistons went from cylinder #1 @ .010 positive deck and as the pistons on that bank went back ending at #7 @ .012 positive.

Edelbrocks closed chambered heads will not like that pistons slapping the $h!t out of them. Believe it or not, I used a Fel-Pro gasket @ .54 on one side and a .039 on the passenger side. Passenger side was a perfect zero deck across the bank.

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First, I'm not picking on anyone in particular here but unless you've tried it how would you know? I run my .011" out of the hole piston short block with the .039 FelPro gasket and small chamber W5 heads milled .050. Yes that's right, .028" of piston to head clearance and I twist it to 7500. Standard wisdom will tell you .025 is doable with steel rods. You'd probably cringe at my piston to valve figures too.

Either way, every one saying they'd rather run X heads than aluminum heads is most likely saying so because they've never had aluminum heads. There is better flow out of the box with aluminum and the potential for more is much greater than any cast iron head. Not to mention the weight savings alone. I was an aluminum head naysayer until I finally bit the bullet and bought a pair. I should have done it years ago. I'll never go back.

As for that point of compression, I dare anybody to prove it.