Wow, AFR 225's are huge heads for only 331 cid. I run 205's on my 331 with 20 psi boost and 7000 rpm shifts. AFR only recommended the 225's if I had 418 or more cubes or spun my 331 to the moon.
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Craig
Supercharged 93 GT
"I drive way too fast to worry about cholesterol!"
Then I went to the doctor.... whoa 312! Hello Lipitor
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