Coil pack question

[MSKBuick]

If I am converting from from the 85 coil pack to the 86/87 coil pack (using the Casper Electronic parts) are the spark plug numbers on the coil pack going to be the same or different? Below is a crude drawing for the 85 set up on the coil pack, so would it be the same when I put the 86/87 coil pack on?


1 5 3
-----
4 2 6
Front of engine(85 set up)

[Keller]

Should be the same. The 86/87 unit will be numbered, but can be flipped 180 degrees, so be careful.

[MSKBuick]

Thanks Scott, I thought so but I wanted to make sure. I purchased a 87 coil last night and it wasn't labeleds with numbers on top.

[Keller]

GM, or aftermarket?