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Originally Posted by BlazerBoyLT98
Don't our engines already "swirl" the air coming in??? Isn't that why it is called a "VORTEC" hehe  |
Those heads came in all of the 4.3's, since '88 when the 4.3 was first offered in these trucks. It was glorified, or better known, for the 4.3L CPI (W) engine though.