[El Scan]

Anyone know what size or type of bolt is the hidden bolt on upper intake, driver side, front of engine
I have a 98 olds 88

 

[dezldave961]

Which bolt are you referring to (guessing 7&8 below, #7 is supporting the EGR bracket nut, I believe)? All of the UIM bolts are M6x1.0 thread, with the longer ones behind the TB being a bit longer (I forget length values for those 2, but I swapped in nicer ones from Ace after getting the measurement.)