how to choose a set of heads?

Discussion in 'GM Powertrain' started by 1995 silverado, May 11, 2009.

  1. 1995 silverado

    1995 silverado New Member

    hello all again! i was interested in changing the heads on my 305tbi... but shopping around i see different valve size and so on so on... how do you choose a set of heads? could someone take me to school on this?? vortech?? regular?? all i know is to make sure the center bolts on them have to be straight up... right?

    lost and confused......

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