Just got my Edelbrock Performer RPM heads from UPS today (great service and price from Summit).
Anyway, reading about the installation it says that if you have an early 289-302 block (mine's a '66_289 A code) you have to drill 1/8" steam holes next to the head bolt on the deck of the block.
Has anyone had to do this w/ their Edelbrock heads or any other aftermarket aluminum heads? Did you have to take it to a shop or were you able to do it at home (I have a drill, but not sure if the drill bits can penetrate cast iron)?
Is it possible that my block is not one of the early ones? I won't be taking my old heads off for a couple days, the suspense is killing me.
Please share your experiences.
Anyway, reading about the installation it says that if you have an early 289-302 block (mine's a '66_289 A code) you have to drill 1/8" steam holes next to the head bolt on the deck of the block.
Has anyone had to do this w/ their Edelbrock heads or any other aftermarket aluminum heads? Did you have to take it to a shop or were you able to do it at home (I have a drill, but not sure if the drill bits can penetrate cast iron)?
Is it possible that my block is not one of the early ones? I won't be taking my old heads off for a couple days, the suspense is killing me.
Please share your experiences.