Sheet metal around valve spring ?

[Zman1969]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: VintageMusclecar</div><div class="ubbcode-body">From what I've seen so far, if the vehicle was equipped with an auxiliary external oil cooler and a big block, the block didn't have the large drilled plugs on the side. I'm assuming this was since there was no need for them with the auxiliary cooler. I have a 454 4 bolt block with the small plugs as well. </div></div>
from what I remember alot of GM vehicles had oil cooler adapters like this in 80's and 90's wonder if the quit drilling big blocks for the big plug all together? - sorry I'm off topic here folks