Kasavage

I have attached some pictures, so just let me know what you guys think. I think I have the stock GT40's that came with the 93 cobra engine, but I could be wrong. Thanks.

mjr46

they look like stock e7 heads most likely, as they are pedastal mount rockers and looks as if they have been rebuilt/had a valve job done due to the shims I see under the springs, you'd have to have the heads off to get casting numbers from the under side of the intake runner lip

ewgoetz

iron GT40's will have a GT stamped by the number 1 sparkplung like below.

mjr46

^^^^it'll also say gt-40 in the valvetrain area if they were such