I found a 4.1 today at the junkyard, its the "291" casting so i wanted to take it home for my project but when I pulled the drivers side head off (to look for overbore numbers) I saw some unfamiliar markings.
On top of the #1 piston there was a "5"
On top of the #3 piston there was a "5"
And
On top of the #5 piston there was a "7"
Im fairly new to the turbo buick scene so if this is elementary forgive my ignorance:biggrin:
On top of the #1 piston there was a "5"
On top of the #3 piston there was a "5"
And
On top of the #5 piston there was a "7"
Im fairly new to the turbo buick scene so if this is elementary forgive my ignorance:biggrin:
